Wednesday 3 Dec, 4.30pm
József Fiser (Psychology, Brandeis)
The emergence and structure of visual long-term memory and its effect
on working memory
Venue:
Room 137, Institute for Psychology, Hungarian Academy of Sciences
Victor Hugo u. 18-22, 1132 Budapest
Everyone is welcome to attend.
---
Gergely Csibra
Tisztelt Kollégák!
Szeretettel meghívunk mindenkit az MTA Pszichológiai Kutatóintézete
által rendezett Fiatal Kutatók Fórumára. A Fórumon az intézet fiatal
munkatársai mutatják be kutatásaikat. Részletes program a www.mtapi.hu
oldalon található.
Időpont: december 5. (péntek) 8.50.
Helyszín: Victor Hugo u. 18-22., A31-es terem.
Üdvözlettel,
Gaál Zsófia Anna
Dear All,
Let us call your attention to CEU's Summer Program in 2009. We believe
you may find it interesting for your studies/research.
General application deadline: 16 February, 2009
Best wishes,
CEU Summer University team
--------------------
Kedves Listatagok!
Szeretnenk felhivni a figyelmuket a CEU Nyari Egyetemenek 2009-es
prograjara, mely valtozatos kurzuskinalattal var minden erdeklodot.
Altalanos jelentkezesi hatarido: 2009 Februar 16.
(Lasd az angol nyelvu kiirast alabb.)
Udvozlettel,
a CEU Nyari Egyetem munkatarsai
*************************
Central European University's summer school (June 8-July 31, 2009) is a
program in English for graduate students, junior or post-doctoral
researchers, faculty and professionals in the social sciences and
humanities. It draws its student body of around 500 participants
annually from more than 60 countries and its faculty from over 30
countries.
In 2009 the summer school offers 21 high-level, research-oriented,
interdisciplinary academic courses as well as workshops on policy issues
for professional development, taught by internationally renowned
scholars and policy experts (including CEU faculty). Application from
all over the world is encouraged. Financial aid is available.
The general application deadline is February 16, 2009. More information
about the courses and the application process are available at
www.sun.ceu.hu/courses .
We are looking forward to receiving your applications.
Summer University Office
1051 Budapest, Nádor u. 9.
Hungary
Tel.: (36-1) 327-3811
Fax: (36-1) 327-3124
A BME Kognitív Tudományi Tanszék szeretettel vár mindenkit tanszéki
szeminárium sorozatának következő hétfői előadására
<http://cogsci.bme.hu/Esem.php?esemIndex=66>:
The Department of Cognitive Science at BME cordially invites you to the
next talk <http://cogsci.bme.hu/Esem.php?esemIndex=66> in its lecture
series:
* *
*Nádasdy Zoltán
*
Post-Doctoral Fellow
The Andersen Lab
California Institute of Technology **
<http://www.vis.caltech.edu/%7Ezoltan/cv2007v2.htm>
<http://www.vis.caltech.edu/%7Ezoltan/cv2007v2.htm>
<http://biology.caltech.edu/>
/*The neuronal phase code*
(Encoding and decoding information by the phase of action potentials)///
December 8., hétfő - 15:00. BME, XI., Stoczek u. 2., St. ép., 320.-as terem.
Monday, December 8th, 15:00. BME, Budapest, Stoczek u. 2, St. building,
room 320.
*Abstract: *
Experimental evidence, such as task-dependent coherency between
single-unit activity and local field potentials (LFPs), together with
the dependency of action potential (AP) initiation on the subthreshold
membrane oscillation (SMO) suggest that: i) the probability of action
potentials is controlled by a common oscillatory mechanism; ii) the SMOs
across individual neurons are not independent but rather form a coherent
field of oscillations; and iii) nearly-synchronized SMOs may propagate
through neuronal connections, creating a constant-phase gradient of SMO
between neighbor neurons. Based on these assumptions, we formulated a
model in which neurons encode information by the phase of APs relative
to the SMO. The model consists of four stages: encoding with phase,
gamma alignment, information transfer, and reconstruction. We
demonstrated by means of simulations that information encoded by the
phase of APs can reliably be transferred and reconstructed at distant
target areas. Moreover, since the phase code is a compressed
representation of the spatio-temporal features of the stimulus, it
enables the transfer of information in parallel pathways without
distortion from conductance differences. We illustrate by examples how
phase coding may account for a number of unresolved physiological
observations related to sparse coding, motion processing, phase
precession, and invariance detection, as well as anatomical principles,
such as the columnar organization and grid cell architecture.
Furthermore, we show empirical evidence for stimulus-dependent phase
coding in V1 from simultaneous single-unit and LFP
recordings.* *
Keresztes Attila
BME-Kognitív Tudományi Tanszék
BME-Cognitive Science Department
akeresztes(a)cogsci.bme.hu <mailto:akeresztes@cogsci.bme.hu>
keresztes.attila(a)gmail.com <mailto:keresztes.attila@gmail.com>
THEORETICAL PHILOSOPHY FORUM
Institute of Philosophy
Faculty of Humanities, Eotvos University
Room 226 Monday 4:00 PM Muzeum krt. 4/i, Budapest
Web site: http://phil.elte.hu/tpf
8 December 4:00 PM Room 226
Natalie Ross
Philosophy, Australian Catholic University
Emmanuel Levinas and Imre Lakatos’ Approaches to Human Action as
Applicable to Methodology in the Natural and Human Sciences
Abstract: http://phil.elte.hu/tpf/2008-2009/December/#2
___________________________________
The Forum is open to everyone, including students,visitors, and faculty
members from all departments and institutes!
Format: 60 minute lecture, 10 minute coffee break, followed by a 30-60
minute discussion. The language of presentation is English or Hungarian.
A printable poster is available from here:
http://phil.elte.hu/tpf/2008-2009/December/poster.pdf
Please feel free to post it in your institution!
The organizer of the Forum: Laszlo E. Szabo
(leszabo(a)phil.elte.hu)
--
L a s z l o E. S z a b o
Department of Logic, Institute of Philosophy
Faculty of Humanities, Eotvos University, Budapest
http://phil.elte.hu/leszabo
Tisztelt kollégák!
December 3-án, szerdán fél 11-kor az MTA KFKI RMKI tanácstermében elõadást
tart:
Sidney Wiener
CNRS-Collège de France LPPA, Paris, France
Elõadásának témája:
Neural correlates of learning in the hippocampo-prefrontal pathway
The Wisconsin Card Sorting task is used to diagnose prefrontal damage in
human patients. This task requiring self-generating set-shifting and rule
creation was adapted for rats. Then we recorded local field potentials
(LFPs) in hippocampus and prefrontal cortex as well as multichannel unit
recordings in prefrontal areas PL/IL during learning and shifting between
spatial and cue-guided strategies in a Y maze. The prefrontal neurons
changed behaviorally correlated activity after rule changes and as the rat
acquired new rules. Furthermore, during rule acquisition there was increased
coherence of prefrontal and hippocampal LFPs in the theta band when the rat was
at the fork of the Y maze, during response selection. With a new principal
components analysis of unit ensemble co-activations permitting high temporal
resolution, we determined that during slow wave sleep (SWS) that there was
replay of prefrontal neural ensemble coactivations appearing during the awake
learning experience. This mostly occurs during hippocampal sharp wave ripples,
which correspond to periods of replay in the hippocampus also. Examination of
prefrontal neuron modulation by hippocampal LFP theta oscillations demonstrated
a subpopulation that had increased modulation during high coherence of
hippocampal and prefrontal LFPs. Moreover, prefrontal cell assemblies formed
during high coherence periods are reactivated during ripples occurring during
sleep after learning the task. This suggests a new mechanism of increased
inter-region communication during high LFP oscillatory coherence periods,
facilitating selection of relevant
information to be stored in long term memory.
Cím: Bp. Csillebérc, Konkoly-Thege Miklós út 29-33, III. épület 2. emelet
A 90-es busz csillebérci végállomásánál.
Minden érdekõdõt szeretettel várunk.
Somogyári Zoltán
MTA KFKI RMKI,
Biofizikai osztály