Texture discriminability in monkey inferotemporal cortex predicts human texture perception
Autor: | S. P. Arun, Kalathupiriyan A. Zhivago |
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Rok vydání: | 2014 |
Předmět: |
Adult
Male Physiology media_common.quotation_subject Texture perception Sensory Processing perception Texture (geology) 050105 experimental psychology object recognition Temporal lobe 03 medical and health sciences 0302 clinical medicine Discrimination Psychological Species Specificity Visual Objects Perception Animals Humans 0501 psychology and cognitive sciences computer.programming_language media_common Neurons Communication business.industry General Neuroscience 05 social sciences Cognitive neuroscience of visual object recognition Pattern recognition Neurophysiology Temporal Lobe Macaca radiata Touch Perception inferior temporal cortex Female Artificial intelligence neurophysiology business Psychology computer texture 030217 neurology & neurosurgery |
Zdroj: | Journal of Neurophysiology |
ISSN: | 1522-1598 |
Popis: | Shape and texture are both important properties of visual objects, but texture is relatively less understood. Here, we characterized neuronal responses to discrete textures in monkey inferotemporal (IT) cortex and asked whether they can explain classic findings in human texture perception. We focused on three classic findings on texture discrimination: 1) it can be easy or hard depending on the constituent elements; 2) it can have asymmetries, and 3) it is reduced for textures with randomly oriented elements. We recorded neuronal activity from monkey inferotemporal (IT) cortex and measured texture perception in humans for a variety of textures. Our main findings are as follows: 1) IT neurons show congruent selectivity for textures across array size; 2) textures that were easy for humans to discriminate also elicited distinct patterns of neuronal activity in monkey IT; 3) texture pairs with asymmetries in humans also exhibited asymmetric variation in firing rate across monkey IT; and 4) neuronal responses to randomly oriented textures were explained by an average of responses to homogeneous textures, which rendered them less discriminable. The reduction in discriminability of monkey IT neurons predicted the reduced discriminability in humans during texture discrimination. Taken together, our results suggest that texture perception in humans is likely based on neuronal representations similar to those in monkey IT. |
Databáze: | OpenAIRE |
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