期刊
NEUROSCIENCE
卷 352, 期 -, 页码 226-235出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuroscience.2017.03.038
关键词
tactile; somatosensory; perception; multivariate pattern analysis; object recognition; object category
资金
- Consejo Nacional de Ciencia y Tecnologia (CONACYT) [409258]
- Direction del Personal Academico de la Universidad Nacional Autonoma de Mexico [VdL: IN201115]
- CONACYT [VdL: 254313, 247200, 181508]
The visual system classifies objects into categories, and distinct populations of neurons within the temporal lobe respond preferentially to objects of a given perceptual category. We can also classify the objects we recognize with the sense of touch, but less is known about the neuronal correlates underlying this cognitive function. To address this question, we performed a multivariate pattern analysis (MVPA) of functional magnetic resonance imagining (fMRI) activity to identify the cortical areas that can be used to decode the category of objects explored with the hand. We observed that tactile object category can be decoded from the activity patterns of somatosensory and parietal areas. Importantly, we found that categories can also be decoded from the lateral occipital complex (LOC), which is a multimodal region known to be related to the representation of object shape. Furthermore, a hyperalignment analysis showed that activity patterns are similar across subjects. Our results thus indicate that tactile object recognition generates category-specific patterns of activity in a multisensory area known to encode objects, and that these patterns have a similar functional organization across individuals. (C) 2017 IBRO. Published by Elsevier Ltd. All rights reserved.
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