Visual categorization shapes feature selectivity in the primate temporal cortex

Sigala, Natasha and Logothetis, Nikos K (2002) Visual categorization shapes feature selectivity in the primate temporal cortex. Nature, 415 (6869). pp. 318-20. ISSN 0028-0836

Full text not available from this repository.

Abstract

The way that we perceive and interact with objects depends on our previous experience with them. For example, a bird expert is more likely to recognize a bird as a sparrow, a sandpiper or a cockatiel than a non-expert. Neurons in the inferior temporal cortex have been shown to be important in the representation of visual objects; however, it is unknown which object features are represented and how these representations are affected by categorization training. Here we show that feature selectivity in the macaque inferior temporal cortex is shaped by categorization of objects on the basis of their visual features. Specifically, we recorded from single neurons while monkeys performed a categorization task with two sets of parametric stimuli. Each stimulus set consisted of four varying features, but only two of the four were important for the categorization task (diagnostic features). We found enhanced neuronal representation of the diagnostic features relative to the non-diagnostic ones. These findings demonstrate that stimulus features important for categorization are instantiated in the activity of single units (neurons) in the primate inferior temporal cortex

Item Type: Article
Keywords: INFEROTEMPORAL CORTEX; RHESUS-MONKEYS; RECOGNITION; SIMILARITY; REPRESENTATION; EXPERTISE; IMAGES; EYE
Schools and Departments: Brighton and Sussex Medical School > Clinical and Experimental Medicine
Brighton and Sussex Medical School > Neuroscience
Subjects: R Medicine > RC Internal medicine > RC0071 Examination. Diagnosis Including radiography
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
Related URLs:
Depositing User: Hazelle Woodhurst
Date Deposited: 14 Nov 2012 14:04
Last Modified: 26 Sep 2017 11:58
URI: http://sro.sussex.ac.uk/id/eprint/42393
📧 Request an update