koglist July 1998

koglist@maillist.ttk.hu

4 participants
9 discussions

CogPrints: Archive your Preprints and Reprints

by Stevan Harnad

To all biobehavioral and cognitive scientists: You are invited to archive your preprints and reprints in the CogPrints electronic archive. You will find that it is extremely easy. The Archive covers all the Cognitive Sciences: Psychology, Neuroscience, Biology, Computer Science, Linguistics and Philosophy CogPrints is completely free for everyone, both authors and readers, thanks to a subsidy from the Electronic Libraries Programme of the Joint Information Systems of the United Kingdom and the collaboration of the NSF-supported Physics Eprint Archive at Los Alamos. CogPrints has just been opened for public automatic archiving. This means authors can now deposit their own papers automatically. The first wave of papers had been invited and hand-archived by CogPrints in order to set a model of the form and content of CogPrints. To see the high level of contributors and contributions: http://cogprints.soton.ac.uk/ To archive your own papers automatically: http://cogprints.soton.ac.uk/author.html All authors are encouraged to archive their papers on their home servers as well. For further information: admin(a)coglit.soton.ac.uk

27 years, 9 months

Tycho's Diagram: Submit animation or Java applet to Psycoloquy

by Stevan Harnad

Psycoloquy authors/readers are invited to prepare and submit a Web-useable moving graphic image of Tycho's diagram using animation or a Java applet. The first successful working model submitted will be published in Psycoloquy with credit as part of commentary on the just- published target article: Target article: Margolis, H. Tycho's Illusion: How It Lasted 400 Years, And What That Implies About Human Cognition PSYCOLOQUY 9(32) Thursday July 16 1998 Commentaries to date: Harris, L. The Mars/Sun Collision Illusion: Motion Is Not Visualizable In Two Different Reference Frames Simultaneously PSYCOLOQUY 9(33) Thursday July 23 1998 Pearson, D. Imagery Need Not Be Blind to Fail PSYCOLOQUY 9(34) Thursday July 23 1998 UK URL for the Margolis target article (hypertext version): http://www.cogsci.soton.ac.uk/psyc-bin/ptopic?topic=Cognitive-illusion&subm… US URL for Margolis target article (ftp version) ftp://ftp.princeton.edu/pub/harnad/Psycoloquy/1998.volume.9/psyc.98.9.32.co… URLs for Tycho's Diagram: UK: ftp://coglit.psy.soton.ac.uk/pub/psycoloquy/1998.volume.9/Pictures/margolis.fig5.html US: ftp://ftp.princeton.edu/pub/harnad/Psycoloquy/1998.volume.9/Pictures/margol… -------------------------------------------------------------------- Stevan Harnad harnad(a)cogsci.soton.ac.uk Professor of Psychology harnad(a)princeton.edu Director, phone: +44 1703 592582 Cognitive Sciences Centre fax: +44 1703 594597 Department of Psychology http://www.cogsci.soton.ac.uk/~harnad/ University of Southampton http://www.princeton.edu/~harnad/ Highfield, Southampton ftp://ftp.princeton.edu/pub/harnad/ SO17 1BJ UNITED KINGDOM ftp://cogsci.soton.ac.uk/pub/harnad/

27 years, 9 months

5. magyar Latas Szimpozium: Program es Absztraktok

by Jozsef Fiser

Kedves Koglist olvaso! Alabb kozoljuk az elozetesen mar hirdetett szimpoziumunk reszletes programtervet es az eloadasok absztraktjait. A szimpoziumon minden erdeklodot szeretettel varunk!!!!! A Szervezok ======================================================================= OTODIK MAGYAR LATAS SZIMPOZIUM 1998 augusztus 29 MTA Pszichologiai Intezetenek eloadoterme PROGRAMTERV 9:45 MEGNYITO NEM FOEMLOS TANULMANYOK 10:00 A KEREG ES A TALAMUSZ OSSZEKOTTETESEINEK KERESZTEZETT MODALITAST EREDMENYEZO ATRENDEZODESE UJSZULOTT ENUKLEACIOT KOVETOEN PATKANYBAN Negyessy Laszlo MTA-SOTE EKSz, Neurobiologiai Kutatocsoport, 10:20 PEPTIDERG RENDSZEREK A MACSKA VIZUOMOTOR KOZPONTJAIBAN Borostyankoi Zsolt MTA-SOTE EKSz, Neurobiologiai Kutatocsoport 10:40 SZUNET FOEMLOS INFEROTEMPORALIS CORTEX 11:00 EBER MAJOM INFEROTEMPORALIS KERGI (IT) NEURONÁLIS AKTIVITASANAK VARIABILITASA ES INGER DISZKRIMINACIOS KAPACITASA Kovacs Gyula Szent-Gyorgyi Albert Orvostudomanyi Egyetem, Élettani Intézet 11:20 INFEROTEMPORÁLIS KERGI (IT) NEURONOK SZELEKTIVITAS-VIZSGALATA TELJES ES RESZLEGESEN TÖRÖLT VONALAS RAJZOKKAL RHESUS MAJOMBAN Sary Gyula Szent-Gyorgyi Albert Orvostudomanyi Egyetem, Élettani Intézet 11: 40 SZUNET EBED KODOLASI MECHANIZMUSOK 2:00 HOGYAN ALAKIT KI AZ AGY MERET INVARIANS REPREZENTACIOKAT ALAKFELISMERES CELJARA? Fiser Jozsef University of Rochester 2:20 A SZKOTOPIAS LATAS ES A MAGNOCELLULARIS LATOPALYA Benedek Gyorgy Szent-Gyorgyi Albert Orvostudomanyi Egyetem, Élettani Intézet 2:40 SZUNET HUMAN KISERLETEK 3:00 TBA Kovacs Ilona Rutgers University 3:20 ESOTROPIA ELLENES KESOI MUTET HATASA A LATOKERGI KIVÁLTOTT VALASZOKRA Kozma Petra Szent-Gyorgyi Albert Orvostudomanyi Egyetem, Élettani Intézet 3:40 SZIMPOZIUM ZARAS ========================================================================== ========================================================================== ABSZTRAKT GYUJTEMENY A KÈREG ÈS A TALAMUSZ ÖSSZEKÖTTETÈSEINEK KERESZTEZETT MODALITÁST EREDMÈNYEZÖ ÁTRENDEZÖDÈSE UJSZULÖTTKORI ENUKLEÁCIOT KÖVETIEN PATKÁNYBAN. Négyessy Lászlo, Gál Viktor. MTA-SOTE EKSZ, Neurobiologiai Kutatócsoport, 1094 Budapest, Tuzolto u. 58. A reciprok kortikotalamikus kapcsolatok átrendezödését vizsgáltuk, mint az ujszulöttkori enukleáció által elöidézett vizuális kéregben kiváltható szomatoszenzoros aktiváció egyik lehetséges neuroanatómiai alapját. Enukleált állatokban, a kontrol, látó csoporthoz hasonlóan, nagy számban jelölödtek neuronok a talamusz látómagjaiban (dCGL, LP, LD) retrográd pályajelölö anyag, torma-peroxidáz (HRP) vizuális kéregbe történö beadását követöen. A retrográd jelölödött relésejtek számának a dCGL, LP illetve LD közötti megoszlását vizsgálva ugyanakkor azt tapasztaltuk, hogy enukleált állatokban a jelölt neuronok aránya az LP-ben megnö, mÌg a dCGL-ben és az LD-ben lecsökken a kontrolhoz képest. Eltéröen a kontrol csoporttól, enukleált állatokban anterográd pályajelölö anyag, biocytin vagy biotinilált dextránamin (BDA) barrel kéregbe történö beadását követöen kortikotalamikus rostok terminális arborizációja jelölödött az LP-ben illetve kisebb számban az LD-ben És a dCGL-ben is. Enukleált állatokban az LP-ben a jelölt látó, és szomatoszenzoros kérgi afferensek hasonló morfológiai bélyegeket mutattak fény, és elektronmikroszkópos szinten egyaránt. A kis méretu, jelölt vizuális, és szomatoszenzoros kérgi axonterminálisok posztszinaptikus elemeinek méreteloszlását összehasonlÌtva jelentös kulönbséget találtunk: a szomatoszenzoros kérgi afferensek nagyobb arányban innerváltak a vizuális kérgi afferensek céldendritjeinél kisebb ill. nagyobb átmérju dendriteket. Eredményeink arra utalnak, hogy a korai életkoruktól vakokban kimutatható megnövekedett orientációs képesség hátterében álló morfológiai változásokat részben az LP kortikotalamikus kapcsolatainak átrendezödése képezi, valamint, hogy a kortikotalamikus kapcsolatok keresztezett modalitást eredményezö plaszticitása során kompetitÌv mechanizmusok lényeges szerepet játszanak. PEPTIDERG RENDSZEREK A MACSKA VIZUOMOTOR KOZPONTJAIBAN Borostyankoi Zsolt, Hamori Jozsef MTA-SOTE EKSz, Neurobiologiai Kutatocsoport, 1450 Budapest, Tuzolto u. 58. A macska colliculus superiorban, pretectumban es a jarulekos latorendszerben vizsgaltuk a neuropeptid Y (NPY) es a vazoaktiv intesztinalis polipeptid (VIP)-immunreaktiv (-ir) elemek eloszlasat. A pretectum magjaiban es a jarulekos latorendszer magjaiban talaltunk NPY-ir neuronokat, mig a colliculus superiorban rostokat. VIP-ir sejteket a jarulekos latorendszerben eszleltunk: nucleus tracti optici (NOT), dorsalis-, lateralis-, es medialis terminalis nucleus. A colliculus superior pedig VIP-ir rostokat tartalmazott a felso retinorecipiens retegben. Kimutattuk, hogy a frontalis szemu macska latorendszerenek vizuomotor kozponjaiban hasonloan jelen van az NPY, ahogyan a lateralis szemu ragcsalokban es mas nem emlos fajokban (galamb, csirke, beka), mellyel eme peptiderg rendszer evoluciosan erosen konzervalt voltara kovetkeztethetunk. Erre tamaszkodva feltetelezhetjuk egy alacsonyabbrenduekben mar bizonyitott gatlo NPYerg pretecto-tectalis palya letet a macskaban is, melyet megerositenek a mi morfologiai adataink. A VIP-ir neuronok eloszlasabol itelve a NOT es a terminalis nucleusok kozotti interakciokban lehet szerepuk, ezaltal a horizontalis es vertikalis szemmozgasok kontrolljat modulalhatjak, ill. az NPY-hoz hasonloan befolyast gyakorolnak a retinalis informaciotovabbitasra a colliculus superiorban. A pretectalis komplexben a NOT az egyetlen mag, ahol mind NPY-, mind VIP-ir neuronok elofordulnak es nagy valoszinuseggel a colliculus superiorban vegzodnek. Perikaryonjaikat megmerve szignifikans kulonbseget tapasztaltunk, ami - legalabbis reszben - kettos peptiderg neuronpopulaciot vet fel a NOT-ban. INFEROTEMPORÁLIS KÉRGI (IT) NEURONOK SZELEKTIVITÁS-VIZSGÁLATA TELJES ÉS RÉSZLEGESEN TÖRÖLT VONALAS RAJZOKKAL RHESUS MAJOMBAN Gy. Sáry1, Gy. Kovács1, K. Köteles1, Gy. Benedek1, J. Fiser2*, and I.Biederman3. 1 SZOTE Élettani Intézet 2 University of Rochester 3 University of Southern California Humán pszichofizikai vizsgálatokban az alanyok egyformán képesek felismerni teljes vonalas rajzokat és azok olyan változatait, melyekben a körvonalak bizonyos részeit random és komplementer módon törölték. Amennyiben azonban a körvonalakat úgy törölték, hogy az alakok stratégiailag fontos elemei, a geonok már nem kivehetöek, akkor jelentösen romlott a felismerés az azonos mérték_, olyan törlésekhez képest melyekben a geonok még kivehetöek. (Biederman, 1987). 1., Az elsö kísérletben teljes vonalas rajzokat (TR) és azok komplementer módon részlegesen törölt változatait (RTR1 és RTR2) mutattuk éber, fixáló rhesus majomnak, miközben IT neuronok aktivitását regisztráltuk. A vizsgált neuronok 94 %-a válaszolt TR-ra, míg 57 %-uk reagált RTR1-re és RTR2-re is. Az RTR1-re és RTR2-re kapott nettó tüzelési ráta nem tért el egymástól, de szignifikánsan magasabb volt, mint a TR-re kapott válasz. A neuronok 49 %-a szelektívnek bizonyult TR-re, ugyanakkor ez a szelektivitás nem maradt fenn RTR1-re és RTR2-re. Ez a tény arra mutat, hogy az IT neuronokban a teljes és részlegesen törölt vonalas rajzok kódolása különbözö mechanizmusokkal történik, 2., A kísérletek második részében a TR mellett olyan módon töröltük a rajzok egyes részeit, hogy az pszichofizikai mérések alapján felismerésüket nem befolyásolta lényegesen (a geonok felismerhetöek maradtak, fRTR) illetve megnehezitette azt (a geonok már nem felismerhetöek, nfRTR). A TR-re válaszoló neuronok mintegy 70, illetve 53 %-a reagált az fRTR illetve az nfRTR ingerekre. A válaszok nagysága szignifikánsan különbözött mindhárom stimulus típusra. A neuronok alakszelektivitása szintén eltérö volt a TR, fRTR és nfRTR ábrák esetében. Az IT neuronok különbözö válasza az fRTR és nfRTR alakokra a fentiek szerint magyarázhatja a könnyen illetve nehezen felismerhetö részlegesen törölt kontúrú ábrákra kapott humán pszichofizikai eredményeket. ÉBER MAJOM INFEROTEMPORÁLIS KÉRGI (IT) NEURONÁLIS AKTIVITÁSÁNAK VARIABILITÁSA ÉS INGER DISZKRIMINÁCIÓS KAPACITÁSA Kovács Gyula, Benedek György, Sáry Gyula SZOTE Élettani Intézet Extracelluláris egysejtaktivitást (n=73) regisztráltunk egy éber, aktivan fixáló rhesus majom inferotemporális kérgéb_l. Komplex formák, amik eltér_ nagyságú átlagos neurális választ (NV) váltottak ki a neuronokban eltér_ válasz varianciát (V) is eredményeztek. A neurális V vs. átlagos NV összefüggés az IT neuronokban is hasonló egyenlettel irható le, mint macskák A17-ben, ill. majmok V1-ben. Az egyes neuronok inger diszkriminációs kapacitásának összehasonlítása szerint azok a sejtek, melyek alacsonyabb V-t mutatnak nagyobb biztonsággal képesek a komplex formákat elkülöníteni egymástól, mint azok, melyeknek neurális V-ja nagyobb. Eredményeink arra utalnak, hogy az extrastriatalis látóareak ingerdiszkriminációja az els_dleges areakban leírtakhoz hasonló neurális mechanizmusokhoz köt_dik. A SZKOTÓPIÁS LÁTÁS ÉS A MAGNOCELLULÁRIS LÁTÓPÁLYA Benedek György SZOTE Élettani Intézet A párhuzamos látópályák létezését az emlösagyban morfológiai és élettani tanulmányok bizonyítják. Több emberi betegségben így a szembelnyomás fokozódásával járó glaucomában vagy a dyslexia egyes eseteiben is leírták a magnocelluláris neuronok szelektív károsodását. Nem tisztázott ugyanakkor, hogy milyen élettani funkciók károsodnak akkor, amikor a magnocelluláris pálya károsodik. Gyakorlati igény is van egy olyan módszerre, mely szelektív módon érzékeny a magnocelluláris müködésekre. Az elöadás azt az elképzelést ismerteti, hogy scotopiás körülmények között végzett látási müködések a magnocelluláris pálya müködését tükröznék. Majmok látórendszerében végzett tanulmányok mutatták ki, hogy a magnocelluláris neuronok aktiválódása dominál az alacsony kontrasztú, alacsony térbeli frekvenciájú scotopicus luminanciaviszonyok közötti ingerlés hatására (Purpura, Kaplan és Shapley, 1988, Lee, Smith, Pokorny és Kremers, 1997). Ennek megfelelöen megnéztük az emberi kontrasztérzékenység alakulását photopicus és scotopicus luminanciaviszonyok között. A statikus és dinamikus kontrasztérzékenység a photopicus fényviszonyok között mutatott "high-pass" jellegét scotopicus körülmények között "low-pass" tulajdonságúra változtatta. A scotopiás kontrasztérzékenységi görbék megfelelnek a magnocelluláris neuronokon felvett méréseknek. A tranziens és steady-state látókérgi kiváltott válaszok jelent_s változásokat mutattak a luminanciaviszonyok és a térbeli frekvencia függvényében. Vizsgálataink bizonyitékokat szolgáltatnak ahhoz az elképzeléshez, hogy a scotopiás fényviszonyok között végzett ingerlések felvilágosítást adhatnak a magnocelluláris látási folyamatok természetére vonatkozóan. Purpura, K., Kaplan, E., Shapley, R.M (1988) Background light and the contrast gain of primate P and M retinal ganglion cells. Proc. Natl. Acad. Sci. USA 85: 8534-8537 Lee, B.B., Smith, V.C., Pokorny, J., Kremers, J. (1997) Rod inputs to macaque ganglion cells. Vision Res. 37: 2813-2828 ESOTROPIA ELLENES KÉSÖI MÜTÉT HATÁSA A LÁTÓKÉRGI KIVÁLTOTT VÁLASZOKRA Kozma P., Deák A.*, Janáky M.*, Benedek Gy. Szent-Györgyi Albert Orvostudományi Egyetem Élettani Intézet és Szemészeti Klinika* Vizsgálataink során a kancsal csoportban 10 eso- és 1 exotrop, konzervatív módszerrel kezelt, elözetesen feljavított látásélességü kancsal gyermek látókérgi kiváltott válaszait regisztráltuk binokulárisan illetve monokulárisan a mütét elött és a mütét után legalább 3 hónappal. A mütét célja a konzervatív módszerrel elért binocularitás stabilizálása illetve a nem megfelelöen kialakult binokularitás helyreállítása. Az elektrofiziológiai vizsgálatok során a látókérgi mintaváltásra kiváltott válasz (VEP) P100 komponensének amplitúdó változásain keresztül kísértük figyelemmel a mütétnek a mono- és a binokuláris funkcióra gyakorolt hatásait. A mütét elött az amblyopiás szem kiváltott válaszai mind a monokuláris normál, mind a binokuláris felvételhez képest szignifikánsan csökkentek, míg a monokuláris normál szem és a binokuláris ingerlés során hasonló görbéket kaptunk. A mütét hatására azonban a binokuláris ingerléssel kapott válasz a normál szem válaszától is szignifikánsan eltért (p<0,05), noha a mütét hatására mind a mono-, mind a binokuláris ingerlés során növekedtek a P100 komponens amplitúdó értékei. A legnagyobb választ a binokuláris ingerléskor 20' négyzetnagyságnál kaptuk. Eredményeinket a kontroll csoportban 7 azonos korú gyermeknél regisztrált válaszokkal hasonlítottuk össze, mind a mütét elött, mind a mütét után. A mütét elött a kancsal csoport amplitúdó értékei elmaradtak a kontrollhoz képest. Mütét után statisztikai módszerrel észlelt szignifikáns eltérés a két csoport között megszünt. A legnagyobb változás azonban a binokularitást legjobban mutató binokuláris ingerlés során 20' négyzetnagyságnál volt látható. A mütét hatására a kiváltott válasz görbék értékelésekor kifejezett binokuláris facilitációt 6 esetben észleltünk, míg a mütét elött csak két esetben volt kimutatható. Eredményeink arra utalnak, hogy az esotropia ellenes mütétnek még ebben a viszonylag késöi életkorban is van binokuláris fúziót erösítö hatása. =========================================================================== ===========================================================================

27 years, 9 months

Position available (fwd)

by Zoltan Nadasdy

>---------- Forwarded message ---------- >From: Brian Ross <bross(a)s.psych.uiuc.edu> > >------------------------------ >THE UNVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN PSYCHOLOGY DEPARTMENT invites >applications for a tenure-track position in Quantitative Psychology with a >specialization in Mathematical Modelling. The exact area of research is >open, but we are seeking candidates with strong substantive interests as >well as quantitative sophistication. The primary criteria for appointment >will be excellence in research and teaching. The position begins August >21, 1999 (Ph.D. required). Although it is likely that we will hire at the >assistant professor level, applications from all outstanding individuals >will be considered. Salary is dependent upon experience and >qualifications. Interested persons should send a vita, a statement of >research and teaching interests, at least three letters of recommendation, >and preprints/reprints to: Brian H. Ross, Chair, Mathematical Modelling >Search Committee, University of Illinois, Department of Psychology, 603 >East Daniel Street, Champaign, IL 61820 (217-333-0632). Review of >applications will begin October 15, 1998 and continue until the position is >filled. Information concerning the Psychology Department's programs, >research, facilities, and faculty can be obtained on the World Wide Web at >http://s.psych.uiuc.edu. The University of Illinois is an Affirmative >Action, Equal Opportunity Employer. > >*********************************************************** >Brian H. Ross 217-244-1095, 217-333-8745 >Beckman Institute Fax: 217-244-8371 >University of Illinois >405 N. Mathews Ave. >Urbana, IL 61801

27 years, 9 months

Cognitive Illusions: Psyc Call for Commentary

by Stevan Harnad

Margolis: TYCHO'S (COGNITIVE) ILLUSION The target whose abstract article follows below has just appeared in both (1) PSYCOLOQUY, a refereed journal of Open Peer Commentary sponsored by the American Psychological Association, and, (2) in a shorter version, in NATURE. Qualified professional biobehavioral, neural or cognitive scientists are hereby invited to submit Open Peer Commentary on it. Please email for Instructions if you are not familiar with format and acceptance criteria for PSYCOLOQUY commentaries (all submissions are refereed). To submit articles and commentaries or to seek information: EMAIL: psyc(a)pucc.princeton.edu URL: http://www.princeton.edu/~harnad/psyc.html http://www.cogsci.soton.ac.uk/psyc RATIONALE FOR SOLICITING COMMENTARY: This target article is the expanded version of a shorter summary that has just appeared in Nature (Margolis 1998); the full version is published in PSYCOLOQUY so as to elicit Open Peer Commentary, to which the author will respond. It describes a striking case of a cognitive illusion that has fooled an expert community for a very long time (400 years!). With no exceptions, the leading astronomers of Kepler's time and the leading experts of the history of science in our time have believed that in a world of solid spheres, there would be a collision between Mars and the sun in the Tychonic system. Detailed arguments by Kuhn and many others have been based on the imagined effects of this collision (in prompting the abandonment of belief in the spherical orbits, even in prompting Copernicus to abandon the Earth as center of the world). But the illusion vanishes permanently once Tycho's own diagram is presented in a novel way. None of the various arguments to the effect that cognitive illusions are not really illusions, or that they occur only with trick questions, or only when nothing important to the judge is at stake, etc., seem to apply here. Proponents of such objections may wish to argue otherwise, however, and are invited to contribute their peer commentary. Insights that can be drawn from this episode extend to a number of other topics of current interest. The case seems to provide a striking example of the interaction between affect and logic in persuasion. Tycho's system was seen then and now as somehow a great improvement over Ptolemy's, although logically it is distinguished from Ptolemy's by very little except that it looks Copernican, which provides some support for Zajonc's "primacy of affect" claim. Mental rotation seems essential for the illusory collision, but that rotation cannot be "seen", because once it is concretely visualized (as it is when converted into a physical rotation), the illusion disappears. So something like blindsight with respect to mental rotation seems to be involved here; the case may prove relevant to the debates over mental imagery, whose participants are likewise invited to contribute commentaries. In general, the case provides a striking illustration of the power of habits of mind to dominate mere logic. ----------------------------------------------------------------------- psycoloquy.98.9.32.cognitive-illusion.1.margolis Thu Jul 16 1998 ISSN 1055-0143 (33 parags., 20 refs., 6 figs., 5 notes, 605 lines) PSYCOLOQUY is sponsored by the American Psychological Association (APA) Copyright 1998 Howard Margolis TYCHO'S ILLUSION: HOW IT LASTED 400 YEARS, AND WHAT THAT IMPLIES ABOUT HUMAN COGNITION Howard Margolis Harris School Public Policy Studies University of Chicago 1155 E60th Street Chicago IL 60637 773-702-0867 773-702-0926 (fax) hmarg(a)uchicago.edu http://www.harrisschool.uchicago.edu/Tycho.html ABSTRACT: This target article reports a case in which for a very long time the very best experts (Tycho and Kepler 400 years ago, Thomas Kuhn and many others in recent decades) have suffered an easily corrected illusion. It provides a striking counterexample to claims that cognitive illusions can be reasonably treated merely as effects that clever experimenters can elicit from naive or poorly motivated subjects, but otherwise as not really illusions. The present illusion is based on an apparent collision between the spheres of Mars and the sun in the "Tychonic" alternative to Copernicus in the early 17th Century. The perception of a collision permanently disappears when Tycho's own diagram is presented in a novel way. The illusion appears to come from an unconscious (hence not consciously noticed) mental rotation which is consistent with everyday habits of mind but flatly incompatible with the logic of the situation. This then produces the failure of even the very best experts to notice that what they are seeing in Tycho's diagram is something that is not there. However, once a person sees the cutout described in the article move (i.e., once the rotation becomes a physical rotation, not a mental rotation), the illusion disappears permanently. The present target article is the expanded version of a shorter summary that appeared in Nature (Margolis 1998); this fuller version is published in Psycoloquy so as to elicit Open Peer Commentary, to which the author will respond. KEYWORDS: blindsight, cognitive illusion, mental image, persuasion, psychology of science. http://www.princeton.edu/~harnad/psyc.html http://www.cogsci.soton.ac.uk/cgi/psyc/newpsy ftp://ftp.princeton.edu/pub/harnad/Psycoloquy/1998.volume.9/psyc.98.9.32.co… gopher://gopher.princeton.edu/11/.libraries/.pujournals news:sci.psychology.journals.psycoloquy

27 years, 9 months

[E-Journal] Spatial Cognition and Computation

by Gergely Csibra

Announcing SPATIAL COGNITION AND COMPUTATION An Interdisciplinary Journal Kluwer Academic Publishers Editors: Patrick Olivier (University of York, UK) Stephen Hirtle (University of Pittsburgh) Advisory Editors: Reg Golledge (University of California Santa Barbara) Barbara Tversky (Stanford University) Ben Kuipers (University of Texas at Austin) Lynn Nadel (University of Arizona) Spatial Cognition and Computation is a new, multidisciplinary journal based on the assumption that the critical issues pertaining to spatial cognition and computation lie at the intersection of a number of disciplines, in particular, cognitive psychology, geography, neuropsychology and artificial intelligence. Recent years have seen a growth in the desire of these communities to share insights and results. The aim of the journal is both to concentrate the presentation of research into spatial cognition and computation, and to explicitly encourage an interdisciplinary dialogue. The journal encourages the submission of articles on any topic on spatial cognition and spatial computation. Due to the range of academic disciplines, problems to be addressed by the research should be of a general interest and authors are encouraged to present their ideas in a manner that is accessible to the entire journal readership. Research articles, empirical studies, integrative reviews of the literature and shorter opinion pieces will be considered for publication. Proposals for single-topic issues will also be considered. Specific topics within the scope of the journal include: cognitive and computational models of spatial cognition; navigation, environmental learning and cognitive mapping; cognitive development and representation of large scale space; neuropsychology and spatial cognition; commonsense and qualitative models of space; robot navigation and wayfinding; models and applications of spatial and diagrammatic reasoning; spatial cognition and visual languages; cognitive theories of imagery and imaginal reasoning; integration of vision and natural language processing; representation and processing of spatial expressions; cross-linguistic issues in spatial language; sign language and spatial cognition; gestural analysis and multimodal interfaces; visualization and spatial cognition; navigation and orientation in virtual environment and hypermedia. The first issue is scheduled to appear in early 1999. Instructions on submission and additional information can be found at: http://www.wkap.nl/journalhome.htm/1387-5868 Any further questions may be directed towards either of the co-editors: Patrick Olivier (patrick(a)cs.york.ac.uk) or Stephen C. Hirtle (sch(a)sis.pitt.edu). - ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ : ELSNET European Network in Language and Speech - http://www.elsnet.org/ : ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

27 years, 10 months

Bridges Conference

by Gergely Csibra

Rejected message: sent to koglist(a)cogpsyphy.hu by SARHANGI(a)JINX.SCKANS.EDU follows. Reason for rejection: sender not subscribed. ------------------------------------------------------------------------------- I would appreciate it if you would share the following announcement and the schedule of presentations with your friends and colleagues. Your attendance, especially this year, matters to us. Best regards, Reza Sarhangi Southwestern College announces the first annual conference of BRIDGES: Mathematical Connections in Art, Music and Science July 28-30, 1998 GENERAL SESSION CONTRIBUTORS: Brent Collins, Sculptor, Kansas City, Missouri Dan Daniel, Integrative Studies Program, Southwestern College Pozzi Escot, Musician and Mathematician, New England Conservatory George W. Hart, Computer Scientist, Hofstra University, New York Charles O. Perry, Sculptor, Norwalk, Connecticut Nat Friedman, Mathematician and Artist, University of New York=96Albany Martin Golubitsky, Mathematician, University of Houston Michael Leyton, Psychologist, Rutgers University, New Jersey Carlo H. S=E9quin, Computer Scientist, University of California=96Berkeley Corey Cerovsek, international violinist, will integrate performance and comments throughout the conference. Cerovsek was winner of the grand prize of the Canadian Music Competition at age 9. He completed doctoral course work in mathematics and music at age 18. SPECIAL SESSION CONTRIBUTORS: Mara Alagic, Department of Mathematics and Statistics, Wichita State University, Kansas Jorge Carrera Bola=F1os, Division of Postgraduate Studies, National Autonomous University of Mexico Jarmila Doubravov=E1, Department of Aesthetics, Charles=92 University, Czech Republic Stephen Eberhart, Department of Mathematics, California State University at Northridge Dan Fitzgerald, Department of Mathematics, Newman University, Kansas David Gerhard, School of Computer Science, Simon Fraser University, Canada Gary R. Greenfield, Mathematics and Computer Science, University of Richmond, Virginia Joel K. Haack, Department of Mathematics, University of Northern Iowa Jay Kappraff, Department of Mathematics, New Jersey Institute of Technology Boris D. Lubachevsky, Lucent Technologies, Bell Labs Innovations, New Jersey Solomon Marcus, Section of Mathematical Sciences, Romanian Academy Bruce D. Martin, Department of Chemistry, Southwestern College Ross McCluney, Principal Research Scientist, Florida Solar Energy Center Arun K. Mitra, Department of Mathematics, Texas Tech University John V. C. Nye, Department of Economics, Washington University, St. Louis, Missouri Steve Padget, Architecture and Urban Design, University of Kansas Douglas D. Peden, Artist, Essex, New York Reza Sarhangi, Department of Mathematics, Southwestern College Don R. Schol, School of Visual Arts, University of North Texas John Sharp, Technical Author and Recreational Mathematician, Watford, England Clifford Singer, Artist, New York, New York Michael Stephens, Coordinator, Art Research Center, Kansas City, Missouri Helena Verrill, Max Planck Institute, Bonn, Germany Carol Martin Watts, Department of Architecture and Design, Kansas State University Donald J. Watts, Department of Architecture and Design, Kansas State University Kim Williams, Architect, Director of NEXUS, Florence, Italy Shea Zellweger, Department of Psychology, Mount Union College, Ohio WORKSHOP SESSION CONTRIBUTORS: Charlotte Loveland, former chair, USD 259 Art Department Patrick Ross, Natural Sciences, Southwestern College Reza Sarhangi, Mathematics, Southwestern College Phil Schmidt, Social Sciences, Southwestern College Tim Shook, Performing Arts, Southwestern College Registration: Registration fee is $40 per day or $100 for the entire conference. Tuesday Morning, July 28, 1998 General Session I (8:50 =96 12:30) Messenger Recital Hall, Darbeth Fine Arts Center 8:50=96 Greetings and Opening Remarks 9:00 9:00=96 Finding an Integral Equation of Design 9:45 and Mathematics Brent Collins Gower, Missouri 10:00=96 The Poetics of Mathematics in Music 10:45 Pozzi Escot New England Conservatory Cambridge, Massachusetts 11:00=96 Hyperseeing, Hypersculptures and Space 11:45 Curves Nat Friedman State University of New York Albany, New York 12:00=96 Mind, Music, and Mathematics - I 12:30=09 Corey Cerovsek Bloomington, Indiana Tuesday Afternoon, July 28, 1998 Special Session I (2:30 =96 5:15) Room 105, Beech Science Center Chair: Mara Alagic 2:30=96 New Directions for Evolving Expressions 3:00=20 Gary R. Greenfield University of Richmond Richmond, Virginia 3:15=96 Subjective Fidelity and Problems of=20 3:45 Measurement in Audio Reproduction John V. C. Nye Washington University St. Louis, Missouri 4:00=96 Bridges of Mathematics, Art and Physics=20 4:30 Douglas D. Peden=20 Essex, New York 4:45=96 A Visual Presentation of Rank-Ordered 5:15 Sets Mara Alagic Wichita State University Wichita, Kansas Tuesday Afternoon, July 28, 1998 Special Session II (2:30 =96 5:15) Room 104, Beech Science Center Chair: John Sharp 2:30=96 Pythagorean and Platonic Bridges 3:00 between Geometry and Algebra Stephen Eberhart California State University Northridge, California 3:15=96 The Circle: A Paradigm for Paradox 3:45=20 Reza Sarhangi Southwestern College Winfield, Kansas Bruce Martin* Southwestern College Winfield, Kansas 4:00=96 Let the Mirrors Do the Thinking 4:30=20 Glenn Clark Mount Union College Alliance, Ohio Shea Zellweger* Mount Union College Alliance, Ohio 4:45=96 Problems with Holbein=92s Ambassadors 5:15 and the Anamorphosis of the Skull John Sharp Watford, England Tuesday Afternoon, July 28, 1998 Workshop Session I (2:30-5:15) Room 111, Beech Science Center 2:30=96 Math, Anthropology, and History-- 3:45 What=92s the Deal? Phil Schmidt Southwestern College Winfield, Kansas 4:00=96 Math, Anthropology, and History-- 5:15 What=92s the Deal? Phil Schmidt Southwestern College Winfield, Kansas Tuesday Afternoon, July 28, 1998 Workshop Session II (2:30-5:15) Room 103, Beech Science Center 2:30=96 Multiple Intelligences in the Classroom 3:45=09 Tim Shook Southwestern College Winfield, Kansas 4:00=96 Multiple Intelligences in the Classroom 5:15=09 Tim Shook Southwestern College Winfield, Kansas Wednesday Morning, July 29, 1998 General Session II (9:00 =96 12:30) Massenger Recital Hall, Darbeth Fine Arts Center 9:00=96 Art, Math and Computers: New Ways=20 9:45 of Creating Pleasing Shapes Carlo H. S=E9quin University of California Berkeley, California 10:00=96 Math and Metaphor 10:45 Dan Daniel Southwestern College Winfield, Kansas 11:00=96 Icosahedral Constructions 11:45 George W. Hart Hofstra University New York 12:00=96Mind, Music, and Mathematics - II 12:30=20 Corey Cerovsek Bloomington, Indiana Wednesday Afternoon, July 29, 1998 Special Session III (2:30 =96 5:15) Room 104, Beech Science Center Chair: Kim Williams 2:30=96 Traces of the Geometrical Ordering of 3:00 Roman Florence Carol Martin Watts* Kansas State University Manhattan, Kansas =09 Donald J. Watts Kansas State University Manhattan, Kansas 3:15=96 Geometry as Libera(l)ting Art in Wren=92s 3:45 St. Paul=92s Cathedral Steve Padget University of Kansas Lawrence, Kansas 4:00=96 Eco-Mathematic/Geometric Aspects of a 4:30 Design Proposal for Landscape/Public Art Thomas Michael Stephens Art Research Center Kansas City, Missouri 4:45=96 Architecture and Mathematics: Art, 5:15 Music and Science Kim Williams Nexus Conference Florence, Italy Wednesday Afternoon, July 29, 1998 Special Session IV (2:30 =96 5:15) Room 105, Beech Science Center Chair: Ross McCluney 2:30=96 Spontaneous Patterns in Disk Packings 3:00=20 Boris D. Lubachevsky* Bell Labs Innovations Murray Hill, New Jersey Ron L. Graham AT&T Laboratories Florham Park, New Jersey Frank H. Stillinger Bell Labs Innovations Murray Hill, New Jersey 3:15=96 Symmetry, Chemistry, and Escher=92s Tiles 3:45 Bruce Martin* Southwestern College Winfield, Kansas Reza Sarhangi Southwestern College Winfield, Kansas 4:00=96 Mathematics in Three Dimensional 4:30 Design: The Integration of=20 Mathematical Thinking into the=20 Design Core Don R. Schol University of North Texas Denton, Texas 4:45=96 Conveying Large Numbers to General=20 5:15 Audiences Ross McCluney Florida Solar Energy Center Cocoa, Florida Wednesday Afternoon, July 29, 1998 Workshop Session III (2:30-5:15) =20 Room 103, Beech Science Center 2:30=96 The Art and Mathematics of=20 3:45 Tessellation Reza Sarhangi Southwestern College Winfield, Kansas 4:00=96 The Art and Mathematics of=20 5:15 Tessellation Reza Sarhangi Southwestern College Winfield, Kansas Wednesday Afternoon, July 29, 1998 Workshop Session IV (2:30-5:15) Room 111, Beech Science Center 2:30=96 Problem Solving and Critical Reasoning 3:45 Skills Charlotte Loveland Wichita, Kansas 4:00=96 Problem Solving and Critical Reasoning 5:15 Skills Charlotte Loveland Wichita, Kansas Thursday Morning, July 30, 1998 General Session III (9:00 =96 12:30) Messenger Recital Hall, Darbeth Fine Arts Center 9:00=96 A Symmetry Classification of Columns 9:45 Martin Golubitsky* University of Houston Houston, Texas Ian Melbourne University of Houston Houston, Texas 10:00=96 Continuum, Broken Symmetry, and More 10:45 Charles O. Perry Norwalk, Connecticut 11:00=96 Symmetry, Causality, Mind 11:45 Michael Leyton Rutgers University New Brunswick, New Jersey 12:00=96 Mind, Music, and Mathematics - III 12:30 Corey Cerovsek Bloomington, Indiana Thursday Afternoon, July 30, 1998 Special Session V (2:30 =96 5:15) Room 105, Beech Science Center Chair: Daniel Fitzgerald 2:30=96 The Violin Surface Fitting 3:00 =09 Arun K. Mitra Texas Tech University Lubbock, Texas=20 3:15=96 Automatic Interval Naming Using 3:45 Relative Pitch =09 David Gerhard Simon Fraser University Burnaby, Canada 4:00=96 The Mathematics of Steve Reich=92s 4:30 Clapping Music Joel K. Haack University of Northern Iowa Cedar Falls, Iowa 4:45 =96 What is the Difference between a Banjo 5:15 and a Harley-Davidson Motorcycle? Answer: You Can Tune the Harley Daniel Fitzgerald Newman University Wichita, Kansas Thursday Afternoon, July 30, 1998 Special Session VI (2:30 =96 5:15) Room 103, Beech Science Center Chair: Helena Verrill 2:30 =96 Geometry and Color: Engineering a 3:00 Visual Field Paintings, Sculpture, and Prints 1972 - Present Clifford Singer New York, New York 3:15 =96 Relationships of Science, Mathematics 3:45 and My Constructive Art: A Personal Survey =09 Thomas Michael Stephens Art Research Center Kansas City, Missouri 4:00 =96 Sliceform Sculptures- a Bridges between 4:30 Art and Mathematics John Sharp Watford, England 4:45 =96 Origami Tessellations 5:15 Helena Verrill Max Planck Institute Bonn, Germany Thursday Afternoon, July 30, 1998 Special Session VII (2:30 =96 5:15) Room 104, Beech Science Center Chair: Trudy Morse 2:30=96 A Taxonomy of Ancient Geometry Based 3:45 on the Hidden Pavement of Michelangelo=92s Laurentian Library Ben Nicholson Illinois Institute of Technology Chicago, Illinois Jay Kappraff* New Jersey Institute of Technology Newark, New Jersey Saori Hisano Illinois Institute of Technology Chicago, Illinois 4:00=96 Sun Ra Arkestra 5:15=09 Trudy Morse Garrett Park, Maryland Thursday Afternoon, July 30, 1998 Workshop Session V (2:30-5:15) Room 109, Beech Science Center 2:30=96 Active Learning Approaches for the 3:45 Surface Area/Volume Concept Patrick Ross Southwestern College Winfield, Kansas 4:00=96 Active Learning Approaches for the 5:15 Surface Area/Volume Concept Patrick Ross Southwestern College Winfield, Kansas =20 =20 Reza Sarhangi Chair, Mathematics Department =20 Southwestern College =20 100 College Street =20 Winfield, KS 67156 =20 =20 E-mail: sarhangi(a)jinx.sckans.edu =20 Tel: (316) 221-8373 =20 Fax: (316) 221-8224 =20 http: //www.sckans.edu/~math/ =20 http://www.sckans.edu/~bridges/ =20

27 years, 10 months

Anniversaries in 1999

by Gergely Csibra

Rejected message: sent to koglist(a)cogpsyphy.hu by CHRISTO(a)YORKU.CA follows. Reason for rejection: sender not subscribed. ------------------------------------------------------------------------------- Folks, Stanley Finger has let it be known that there are a few anniversaries coming up next year that we may wish to celebrate with symposia, etc. See below. Regards, Christopher D. Green office: (416) 736-5115 ext. 66164 Department of Psychology FAX: (416) 736-5814 York University Toronto, Ontario M3J 1P3 e-mail: christo(a)yorku.ca CANADA http://www.yorku.ca/faculty/academic/christo ---------- Forwarded message ---------- Date: Tue, 7 Jul 1998 08:45:59 -0500 (CDT) From: Stanley Finger <sfinger(a)artsci.wustl.edu> Reply-To: histneur-l(a)library.ucla.edu To: network History <HISTNEUR-L(a)library.ucla.edu> Subject: Re: Neuroanniversaries and JHN > The year 1999 will be the anniversary year of some major events. As such, > we would like to solicit papers marking these landmarks. Among the > openings that we would like to fill are: > > 1- 150 yrs since Dejerine was born. > > 2- 150 yrs since Pavlov was born. > > 3- 250 yrs since Goethe was born > > 4- 50 yrs since Moniz won his Nobel Prize for lobotomies > > 5- 300 yrs since Descartes wrote his Passions of the Soul (pineal gland > theory) > > In addition, I've asked Sam Greenblatt to help us find someone to write > about Osler (born 1849) and Godlee (born 1849), so perhaps we can come > forth with some volunteers here as well. > > Please let me know if any of these anniversaries can be assigned to a > particular person or partnership. Volunteers are needed. > > Thanks, > > Stan Finger > > ------- > Stanley Finger > Dep't. of Psychology > Washington University > St. Louis, MO 63130 > Phone = 314-935-6513 > Fax = 314 935-7588 > ___________________________________________________ Russell A. Johnson rjohnson(a)library.ucla.edu Archivist (310) 825-3191 or 206-2753 Neuroscience History Archives Brain Research Institute, UCLA Box 951761 Los Angeles CA 90095-1761 Special Collections Cataloger (310) 825-6940 Louise M. Darling Biomedical Library, UCLA Box 951798 Los Angeles CA 90095-1798

27 years, 10 months

Anniversaries in 1999

by Gergely Csibra

Rejected message: sent to koglist(a)cogpsyphy.hu by GBREMAIL(a)AOL.COM follows. Reason for rejection: sender not subscribed. ------------------------------------------------------------------------------- May 8, 1999 will be the 100 anniversary of the birth of the theoretical psychologist Friedrich Hayek, author of _The Sensory Order_ and the co-originator of the Hebb/Hayek synaptic connection model of classification and learning. The Hayek Page is on the web at: http://members.aol.com/gregransom/hayekpage.htm

27 years, 10 months

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koglist July 1998