Category Learning Stretches Neural Representations in Visual Cortex

Current Directions in Psychological Science
Jonathan FolsteinIsabel Gauthier

Abstract

We review recent work that shows how learning to categorize objects changes how those objects are represented in the mind and the brain. After category learning, visual perception of objects is enhanced along perceptual dimensions that were relevant to the learned categories, an effect we call dimensional modulation (DM). DM stretches object representations along category-relevant dimensions and shrinks them along category-irrelevant dimensions. The perceptual advantage for category-relevant dimensions extends beyond categorization and can be observed during visual discrimination and other tasks that do not depend on the learned categories. fMRI shows that category learning causes ventral stream neural populations in visual cortex representing objects along a category-relevant dimension to become more distinct. These results are consistent with a view that specific aspects of cognitive tasks associated with objects can account for how our visual system responds to objects.

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Citations

Jul 19, 2016·Topics in Cognitive Science·Philippe Vincent-LamarreStevan Harnad
Dec 7, 2019·PloS One·Fernanda Pérez-Gay JuárezStevan Harnad
Nov 8, 2019·Psychological Science·Aakash AgrawalS P Arun
Jan 18, 2020·Journal of Cognitive Neuroscience·Meng-Huan WuRajeev Raizada
Feb 6, 2017·Visual Cognition·Jianhong Shen, Thomas J Palmeri
Feb 16, 2021·Frontiers in Neuroscience·Matías QuiñonesMaría de la Luz Aylwin
Jun 25, 2019·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Jonathan R Folstein, Shamsi S Monfared
Jul 21, 2021·Psychological Science·Jacob Feldman
Aug 1, 2021·Neural Networks : the Official Journal of the International Neural Network Society·Giovanni Granato, Gianluca Baldassarre
Sep 1, 2021·Cognition·DongWon OhJonathan B Freeman

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