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Partial occlusions and primate V4
Pasupathy, Anitha; Movshon, Anthony (2013)
clipboard
mla
clipboard		 Pasupathy A., et al. "Partial occlusions and primate V4.", timms video, Universität Tübingen (2013): https://timms.uni-tuebingen.de:443/tp/UT_20130926_003_bestcon_0001. Accessed 09 Mar 2025.
apa
clipboard		 Pasupathy, A. & Movshon, A. (2013). Partial occlusions and primate V4. timms video: Universität Tübingen. Retrieved March 09, 2025 from the World Wide Web https://timms.uni-tuebingen.de:443/tp/UT_20130926_003_bestcon_0001
harvard
clipboard		 Pasupathy, A. and Movshon, A. (2013). Partial occlusions and primate V4 [Online video]. 26 September. Available at: https://timms.uni-tuebingen.de:443/tp/UT_20130926_003_bestcon_0001 (Accessed: 9 March 2025).
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Information
title: Partial occlusions and primate V4
alt. title: Bernstein Conference 2013: Physiology of Vision
creators: Pasupathy, Anitha (author), Movshon, Anthony (annotator)
subjects: Bernstein Conference, Computational Neuroscience, Physiology of Vision, Partial occlusions, Primate V4, Anitha Pasupathy
description: Bernstein Conference 2013, 24. bis 27. September 2013
abstract: One current focus of research in my laboratory is to understand how partially occluded objects are processed in primate area V4, an intermediate stage in the visual shape processing pathway. I will describe results from two projects. First, I will talk about how shapes are encoded differently depending on whether they are the result of occlusion or not. We find that sharp convexities at the junction between occluding and occluded objects are suppressed, and this could mark the first step of image segmentation in the primate brain. Next, I will describe our recent efforts to understand how shape selective V4 neurons contribute to the discrimination of partially occluded objects. In addition to encoding shape information, we find that V4 responses reflect the animal’s behavioral choice even before the emergence of similar signals in the inferotemporal and frontal cortices. Interestingly, V4 decision signals emerge more slowly for higher levels of occlusion and are matched to the time of peak shape selectivity, supporting the idea that V4 may be directly involved in the computation that underlies shape discrimination.
publisher: ZDV Universität Tübingen
contributors: Bernstein Center for Computational Neuroscience Tübingen (BCCN) (producer), Bethge, Matthias (organizer), Wichmann, Felix (organizer), Lam, Judith (organizer), Macke, Jakob (organizer)
creation date: 2013-09-26
dc type: image
localtype: video
identifier: UT_20130926_003_bestcon_0001
language: eng
rights: Url: https://timmsstatic.uni-tuebingen.de/jtimms/TimmsDisclaimer.html?638770884284301810