Visual categorization and the inferior temporal cortex

Sigala, Natasha (2004) Visual categorization and the inferior temporal cortex. Behavioural Brain Research, 149 (1). pp. 1-7. ISSN 0166-4328

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Abstract

We investigated the effects of categorization on the representation of stimulus features in combined psychophysical-electrophysiological experiments. We used parameterized line drawings of faces and fish as stimuli, and we varied the relevance of the different features for the categorization task. The psychophysical and electrophysiological data support an exemplar-based framework for visual object recognition. We recorded from visual neurons in the anterior inferior temporal (IT) cortex of macaque monkeys, while they were performing a categorization task. The visual neurons did not respond selectively to one stimulus set, or to one category. The majority of the anterior IT feature selective neurons were tuned for features that were diagnostic for the categorization task. We argue that this fine-tuning of the neurons reflects the perceptual sensitization to the diagnostic features

Item Type: Article
Keywords: INFEROTEMPORAL CORTEX; FACE RECOGNITION; OBJECT VISION; REPRESENTATION; EXPERTISE; MONKEYS; CLASSIFICATION; FEATURES; NOVICES; NEURONS
Schools and Departments: Brighton and Sussex Medical School > Clinical Medicine
Subjects: R Medicine > RC Internal medicine > RC0321 Neurosciences. Biological psychiatry. Neuropsychiatry
R Medicine > RC Internal medicine > RC0321 Neurosciences. Biological psychiatry. Neuropsychiatry > RC0346 Neurology. Diseases of the nervous system Including speech disorders
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Depositing User: Hazelle Woodhurst
Date Deposited: 14 Nov 2012 14:08
Last Modified: 14 Nov 2012 14:08
URI: http://sro.sussex.ac.uk/id/eprint/42392
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