koglist August 2024

koglist@maillist.ttk.hu

2 participants
6 discussions

[Koglist] [CEU Cogsci Talks] Pascal Mamassian (CNRS & Ecole Normale Supérieure, Paris), Wednesday February 14, 4 pm: ``Measurements of perceived time of visual events``

by Gyorgyne Finta

The CEU Department of Cognitive Science cordially invites you to the following talk by: Pascal Mamassian<https://lsp.dec.ens.fr/en/member/647/pascal-mamassian>, CNRS & Ecole Normale Supérieure, Paris, France Date: Wednesday, February 14, 2024 Time: 4 pm (to 5:30 pm) CET Venue: D001 (QS Vienna) and Zoom: https://ceu-edu.zoom.us/j/99828555100?pwd=S2Y4VnRMTEFHMitWeWk4bnB0SGdXQT09<https://www.google.com/url?q=https://ceu-edu.zoom.us/j/99828555100?pwd%3DS2…> Meeting ID: 998 2855 5100 Passcode: 393080 Chair: Jozsef Fiser Title: Measurements of perceived time of visual events Abstract: Visual perception is not instantaneous. It takes a few milliseconds for light to be transduced in photoreceptors and tens of milliseconds more for neuronal spikes to occur at successive levels of the visual hierarchy. These delays necessarily impact our abiity to perceive time. I will present examples of human time perception from two classes of tasks, duration estimation and perceived time of an event. In duration estimation, we have shown that observers are able to estimate the duration of an interval even when the onset of that interval is not explictly provided. In perceived time, we have shown that the perceived time of an event is influenced by other events in their temporal proximity, and that this perceived time varies across the visual field. A better understanding of our sensitivity to and biases in the perception of time is important to fully appreciate how well we understand our sensory environment. *Anyone not affiliated with CEU wishing to attend in-person in Vienna must reply here<https://forms.office.com/e/HjaP91n2ep> to get access to the lecture hall. Let Jozsef know, please, if you would like to schedule a meeting with the speaker. Best, Reka ------------------------------------------------------------------------ GyörgyNÉ Finta (Réka) Department Coordinator Department of cognitive SCience --------------------------------------------------------------------------------------- [cid:image001.jpg@01DA59C4.C465A9F0] CEU GmbH - CEU Central European University private university Quellenstrasse 51, A-1100 Wien, Room B502 Office: +43 125230 5138 cognitivescience.ceu.edu<https://cognitivescience.ceu.edu/>| www.ceu.edu<http://www.ceu.edu/> See CEU story: www.youtube.com/ceuhungary<http://www.youtube.com/ceuhungary> --------------------------------------------------------------------------------------- CEU is committed to energy and environmental sustainability www.ceu.hu/sustainability<http://www.ceu.hu/sustainability> [https://ci3.googleusercontent.com/mail-sig/AIorK4wJmntYV9xI46HE4vvhea1QVsjj…] Please, consider your environmental responsibility. Before printing this e-mail message, ask yourself whether you really need a hard copy. ______________________________________________ Subscribe by sending an empty mail to talks-subscribe(a)cogsci.ceu.edu Unsubscribe by sending an empty mail to talks-unsubscribe(a)cogsci.ceu.edu

3 months, 2 weeks

[Koglist] [CEU Cogsci Talks] Nikhil Chaudhary (University of Cambridge), Thursday February 8, 4 pm: ``Hunter-Gatherer Social Organisation and Behaviour: Implications for Mental Health``

by Gyorgyne Finta

The CEU Department of Cognitive Science cordially invites you to the following talk by: Nikhil Chaudhary<https://www.nikhilchaudhary.co.uk/>, Evolutionary Anthropologist based at the University of Cambridge Date: Thursday, February 8, 2024 (mind the unusual day please) Time: 4 pm (to 5:30 pm) CET Venue: D318 (QS Vienna) and Zoom: https://ceu-edu.zoom.us/j/94486731045?pwd=VCt1WGZnd1F0MkZleGYvaDRpWEg3Zz09<https://www.google.com/url?q=https://ceu-edu.zoom.us/j/94486731045?pwd%3DVC…> Meeting ID: 944 8673 1045 Passcode: 328579 Chair: Christophe Heintz and Angarika Deb Title: Hunter-Gatherer Social Organisation and Behaviour: Implications for Mental Health Humans lived as hunter-gatherers for the vast majority of our species' history. Therefore, research with contemporary hunter-gatherer societies can offer insight into the evolution of our psychology and physiology. Drawing on my fieldwork with BaYaka hunter-gatherers from Congo, I will discuss the selection pressures that have shaped human social cognition and behaviour. I will focus on the communal living arrangements, egalitarian social organisation, and extensive cooperation, particularly in the domain of childrearing, which are normative across contemporary hunter-gatherer populations. I will also discuss how deviations from these features of sociality, which are commonplace in high-income industrialised societies, may increase our vulnerability to mental health disorders due to evolutionary mismatch-when an organism faces conditions that differ from those that some trait of the organism is adapted to, resulting in pathology or maladaptation. *Anyone not affiliated with CEU wishing to attend in-person in Vienna must RSVP here<https://forms.office.com/e/jbHch9J0Am> to get access to the lecture hall. Let Christophe know, please, if you would like to schedule a meeting with the speaker. Best, Reka ------------------------------------------------------------------------ GyörgyNÉ Finta (Réka) Department Coordinator Department of cognitive SCience --------------------------------------------------------------------------------------- [cid:image001.jpg@01DA4F88.CA108DC0] CEU GmbH - CEU Central European University private university Quellenstrasse 51, A-1100 Wien, Room D502 Office: +43 125230 5138 cognitivescience.ceu.edu<https://cognitivescience.ceu.edu/>| www.ceu.edu<http://www.ceu.edu/> See CEU story: www.youtube.com/ceuhungary<http://www.youtube.com/ceuhungary> --------------------------------------------------------------------------------------- CEU is committed to energy and environmental sustainability www.ceu.hu/sustainability<http://www.ceu.hu/sustainability> [https://ci3.googleusercontent.com/mail-sig/AIorK4wJmntYV9xI46HE4vvhea1QVsjj…] Please, consider your environmental responsibility. Before printing this e-mail message, ask yourself whether you really need a hard copy. ______________________________________________ Subscribe by sending an empty mail to talks-subscribe(a)cogsci.ceu.edu Unsubscribe by sending an empty mail to talks-unsubscribe(a)cogsci.ceu.edu

10 months, 4 weeks

[Koglist] Fluencia Party on 9th February (Friday)

by Dezso Nemeth

Dear Cognitive Folks, The next Fluencia Party will be on 9th February (Friday) starting at 8.00pm in Élesztő (Tűzoltó utca close to Corvin metro station). Info: https://www.facebook.com/events/2013110232260580/ Fluencia is a monthly organized informal "jamboree" for cogsci-, psychology-related students (undergrads, grads), professors, researchers from many different universities in Hungary. The idea and motivation are to facilitate interactions, communication, collaboration among researchers working here, get to know others and others' interests, topics, etc. And, of course, to have some drinks and fun in a friendly environment. Everybody is welcome to attend! If you have any further questions, do not hesitate to ask. All the best, Dezso -------------------------------------- NEMETH, Dezso (PhD) Brain, Memory and Language Lab: http://www.memory-and-language.com Phone: +36-1-4614500/3565, +36-1-4614500/3519

1 year, 8 months

[Koglist] [CEU Cogsci Talks] CCC Colloquium - Ruben Coen-Cagli, Tuesday, Sept. 3. Budapest

by Ildiko Zsoka Varga

Dear All, The CEU Department of Cognitive Science and the Center for Cognitive Computation invites you to the following talk: Speaker: Ruben Coen-Cagli (Albert Einstein College of Medicine) Title: Three easy pieces of natural vision Abstract: Breaking down difficult problems into simpler parts and, conversely, composing primitive units to generate rich behavior, are hallmarks of biological intelligence. Principles of reductionism and compositionality may also guide how we process the complex visual environment of our everyday experience—that is, natural visual processing. This talk will be centered on a core element of this strategy, broadly termed grouping and segmentation, by which our visual system organizes complex visual inputs into groups corresponding to distinct perceptual objects. I will present progress made over the years by my lab and collaborators through a tight integration of theory, computational modeling, visual neurophysiology and psychophysics. First, I will present a normative framework that unifies two widespread observations in primary visual cortex (V1): spatial contextual modulation (how the activity of a neuron in response to a target stimulus is modulated by contextual stimuli) and response variability (fluctuations in neural activity across repeated presentations of the same stimulus). Specifically, we hypothesize that the computational goal of V1 is to approximate a probabilistic representation optimized to the statistics of natural visual inputs, and that the structure of V1 activity is best understood in the light of this goal. I will present a concrete computational framework that instantiates this hypothesis and reproduces a wide array of classical observations on contextual modulation and shared variability. Second, building on that foundation, I will argue that a complete understanding of this phenomenology must also account for the non-stationary statistics of natural inputs. The theory makes detailed predictions about the sensitivity of V1 neurons to segmentation and grouping cues, including a surprising flexibility of functional interactions that we have confirmed recently with data recorded by our collaborators using multielectrode arrays in macaque V1. The third piece will focus on perceptual grouping and segmentation in human observers. Extending our computational framework to deep probabilistic algorithms for natural image and video segmentation, leads to a surprising prediction about the time course of perceptual segmentation: processing time to judge if two parts of an image are in the same segment, increases with distance if they are in the same segment, but decreases with distance otherwise. I will provide empirical evidence recorded in a new experimental paradigm we have developed to measure perceptual grouping of natural stimuli with human participants. This effect challenges popular theories of the time-course of perceptual organization based. In our model, it results from the interactions between spatial priors and dynamic Bayesian inference, offering a normative foundation for recent semi-mechanistic models based on artificial RNNs, and a path to better align them with human perception. Chair: Máté Lengyel Time and date: 4 PM, Tuesday, 3 September 2024 Venue: CEU Budapest site (1051 Budapest, Nádor u. 15.) N15. room 101. Quantum Zoom Meeting: https://ceu-edu.zoom.us/j/96322429897?pwd=D61DAQPQKsRIUwXOSMHAD1kBOaToOE.1<https://www.google.com/url?q=https://ceu-edu.zoom.us/j/96322429897?pwd%3DD6…> Meeting ID: 963 2242 9897 Passcode: 770370 Please, be informed that video/photo recording might take place at the event and the edited version of the video material might be published to communicate or promote CEU PU's activities. Please, find our Privacy Notice here<https://www.ceu.edu/privacy>. Best regards, Ildikó Varga Department Coordinator (Budapest) Department of Cognitive Science [cid:aad270eb-7500-4fcb-96e5-a9607efb1cbb] H-1051 Budapest Nádor u. 15. FT room 404. tel: +36-1 327-3000 2941 http://www.ceu.edu<http://www.ceu.edu/> http://cognitivescience.ceu.edu<http://cognitivescience.ceu.edu/> ______________________________________________ Subscribe by sending an empty mail to talks-subscribe(a)cogsci.ceu.edu Unsubscribe by sending an empty mail to talks-unsubscribe(a)cogsci.ceu.edu

1 year, 8 months

[Koglist] [CEU Cogsci Talks] Departmental Colloquium - Tarryn Balsdon, Monday, Sept. 2. Budapest

by Ildiko Zsoka Varga

Dear All, The CEU Department of Cognitive Science and the Center for Cognitive Computation (CCC) invites you to the following talk. Speaker: Tarryn Balsdon (École normale supérieure) Title: Online confidence control of decision-making in dynamic sensory environments Abstract: Perceptual decisions come with a feeling of confidence that reflects decision accuracy. Rather than a post-decision reflection, we show separable EEG representations of confidence online, during decision-making. This online confidence could be used to control decision efficiency by guiding how we commit to decisions. In dynamic sensory environments, where the quality of the evidence changes over time, observers could use their confidence to down-weight low-quality sensory evidence or capitalise on high-quality evidence. We formulated an extension of sequential sampling models of decision-making in which confidence is used online to actively moderate the quality and quantity of evidence accumulated for decisions. The benefit of this model is that it can respond to dynamic changes in sensory evidence quality. We highlighted this feature by designing a dynamic sensory environment where evidence quality can be smoothly adapted within the timeframe of a single decision. Our model with confidence control offers a far superior description of human behaviour in this environment. Using multivariate decoding of electroencephalography (EEG), we uncovered EEG correlates of the model’s latent processes, and show stronger EEG-derived confidence control leads to faster, more accurate decisions. These results support a neurobiologically plausible framework featuring confidence as an active control mechanism for driving efficient behaviour. Chair: József Fiser Time: 4 PM, Monday, September 2, 2024 Venue: CEU Budapest Site (1051 Budapest, Nádor u. 15.) N15. room 101. Quantum Zoom: Meeting ID: 996 6407 5377<https://www.google.com/url?q=https://ceu-edu.zoom.us/j/99664075377?pwd%3Ddd…> Passcode: 511145 Please, be informed that video/photo recording might take place at the event and the edited version of the video material might be published to communicate or promote CEU PU's activities. Please, find our Privacy Notice here<https://www.ceu.edu/privacy>. Best regards, Ildikó Varga Department Coordinator (Budapest) Department of Cognitive Science [cid:58751420-84f1-42ff-9f09-59b22e19da81] H-1051 Budapest Nádor u. 15. FT room 404. tel: +36-1 327-3000 2941 http://www.ceu.edu<http://www.ceu.edu/> http://cognitivescience.ceu.edu<http://cognitivescience.ceu.edu/> ______________________________________________ Subscribe by sending an empty mail to talks-subscribe(a)cogsci.ceu.edu Unsubscribe by sending an empty mail to talks-unsubscribe(a)cogsci.ceu.edu

1 year, 8 months

[Koglist] {Disarmed} Best Approaches in Data Analysis and Statistics

by Zsolt Palatinus

Greetings Cognitive Scientists! We're up and accepting open talks and hands on tutorials for the Best Approaches in Data Analysis and Statistics Symposium! This year, the meeting will be held in Szeged! Details on our website and in the attached flyer. Best approaches in data analysis and statistics symposium (cogstat.org) <https://www.cogstat.org/best_approaches_symposium/> Please come! Please let people know about it! Best, the organizers: Zsolt Palatinus <zsolt.palatinus(a)gmail.com>, András Zsidó <zsido.andras(a)pte.hu> & Attila Krajcsi <krajcsi(a)gmail.com>. -- Zsolt Palatinus, PhD University of Szeged SZTE-BTK, Pszichológiai Intézet HUNGARY <zsolt.palatinus(a)usm.edu>

1 year, 9 months

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koglist August 2024