Neuronal learning of invariant object representation in the ventral visual stream is not dependent on reward.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Nuo Li, James J DiCarlo

Abstract

Neurons at the top of primate ventral visual stream [inferior temporal cortex (IT)] have selectivity for objects that is highly tolerant to variation in the object's appearance on the retina. Previous nonhuman primate (Macaca mulatta) studies suggest that this neuronal tolerance is at least partly supported by the natural temporal contiguity of visual experience, because altering that temporal contiguity can robustly alter adult IT position and size tolerance. According to that work, it is the statistics of the subject's visual experience, not the subject's reward, that instruct the specific images that IT treats as equivalent. But is reward necessary for gating this type of learning in the ventral stream? Here we show that this is not the case--temporal tolerance learning proceeds at the same rate, regardless of reward magnitude and regardless of the temporal co-occurrence of reward, even in a behavioral task that does not require the subject to engage the object images. This suggests that the ventral visual stream uses autonomous, fully unsupervised mechanisms to constantly leverage all visual experience to help build its invariant object representation.

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Citations

Jul 5, 2013·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Shinya YamamotoOkihide Hikosaka
Nov 24, 2012·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Masaharu YasudaOkihide Hikosaka
Feb 3, 2016·Frontiers in Neural Circuits·Nicolas Frémaux, Wulfram Gerstner
Mar 22, 2016·Wiley Interdisciplinary Reviews. Cognitive Science·Thomas Serre
Sep 4, 2015·Biological cybernetics·Leigh Robinson, Edmund T Rolls
Oct 30, 2014·Frontiers in Neural Circuits·Fabian A Soto, Edward A Wasserman
Sep 25, 2014·Annual Review of Psychology·Takeo Watanabe, Yuka Sasaki
Nov 7, 2014·PLoS Computational Biology·Seyed-Mahdi Khaligh-Razavi, Nikolaus Kriegeskorte
Sep 30, 2016·Frontiers in Computational Neuroscience·Adam H MarblestoneKonrad P Kording
Dec 3, 2016·Cerebral Cortex·Peter KaposvariRufin Vogels
Aug 9, 2019·Annual Review of Vision Science·Thomas Serre
Apr 6, 2017·Scientific Reports·Heida Maria SigurdardottirÁrni Kristjánsson
Feb 15, 2018·Frontiers in Human Neuroscience·Chayenne Van Meel, Hans P Op de Beeck
Jul 15, 2021·Journal of Neurophysiology·Yajie LiuKunlin Wei

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