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  Neural mechanisms of vibrotactile categorization

Malone, P. S., Eberhardt, S. P., Wimmer, K., Sprouse, C., Klein, R., Glomb, K., et al. (2019). Neural mechanisms of vibrotactile categorization. Human Brain Mapping, 40(10), 3078-3090. doi:10.1002/hbm.24581.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0003-543D-B Version Permalink: https://hdl.handle.net/21.11116/0000-0005-530B-2
Genre: Journal Article

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 Creators:
Malone, Patrick S. 1, Author
Eberhardt, Silvio P. 2, Author
Wimmer, Klaus 3, 4, 5, Author
Sprouse, Courtney 1, Author
Klein, Richard1, Author
Glomb , Katharina 3, 6, Author
Scholl, Clara A. 1, Author
Bokeria, Levan 1, Author
Cho, Philip 1, Author
Deco, Gustavo3, 7, 8, 9, Author           
Jiang, Xiong 1, Author
Bernstein, Lynne E.2, Author
Riesenhuber, Maximilian 1, Author
Affiliations:
1Department of Neuroscience, Georgetown University Medical Center, Georgetown University, Washington, DC, USA, ou_persistent22              
2Department of Speech and Hearing Science, George Washington University, Washington, DC, USA, ou_persistent22              
3Department of Information and Communication Technologies, University Pompeu Fabra, Barcelona, Spain, ou_persistent22              
4Centre de Recerca Matemàtica, Barcelona, Spain, ou_persistent22              
5Barcelona Graduate School of Mathematics, Barcelona, Spain, ou_persistent22              
6Department of Radiology, Centre hospitalier universitaire vaudois, Lausanne, Switzerland, ou_persistent22              
7Department Neuropsychology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634551              
8Catalan Institution for Research and Advanced Studies (ICREA), University Pompeu Fabra, Barcelona, Spain, ou_persistent22              
9School of Psychological Sciences, Monash University, Melbourne, Australia, ou_persistent22              

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Free keywords: Cognition; Frontal lobe; Humans; Magnetic resonance imaging; Somatosensory cortex
 Abstract: The grouping of sensory stimuli into categories is fundamental to cognition. Previous research in the visual and auditory systems supports a two‐stage processing hierarchy that underlies perceptual categorization: (a) a “bottom‐up” perceptual stage in sensory cortices where neurons show selectivity for stimulus features and (b) a “top‐down” second stage in higher level cortical areas that categorizes the stimulus‐selective input from the first stage. In order to test the hypothesis that the two‐stage model applies to the somatosensory system, 14 human participants were trained to categorize vibrotactile stimuli presented to their right forearm. Then, during an fMRI scan, participants actively categorized the stimuli. Representational similarity analysis revealed stimulus selectivity in areas including the left precentral and postcentral gyri, the supramarginal gyrus, and the posterior middle temporal gyrus. Crucially, we identified a single category‐selective region in the left ventral precentral gyrus. Furthermore, an estimation of directed functional connectivity delivered evidence for robust top‐down connectivity from the second to first stage. These results support the validity of the two‐stage model of perceptual categorization for the somatosensory system, suggesting common computational principles and a unified theory of perceptual categorization across the visual, auditory, and somatosensory systems.

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Language(s): eng - English
 Dates: 2019-02-182018-11-292019-03-122019-03-282019-07
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/hbm.24581
PMID: 30920706
Other: Epub 2019
 Degree: -

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Project name : PIRE: International Research Program in Cognitive and Computational Neuroscience
Grant ID : 0730255
Funding program : -
Funding organization : National Science Foundation (NSF)
Project name : Collaborative Research: Using Somatosensory Speech And Non-Speech Categories To Test The Brain's General Principles Of Perceptual Learning
Grant ID : 1439338
Funding program : -
Funding organization : National Science Foundation (NSF)
Project name : -
Grant ID : 1439339
Funding program : -
Funding organization : National Science Foundation (NSF)
Project name : Programa PIRE de Neurociencia Cognitiva, Computacional y de Sistemas (PIRE-PICCS)
Grant ID : PCIN-2015- 079
Funding program : Spanish Ministry of Science, Innovation and Universities and the European Regional Development Fund
Funding organization : Spanish Ministry of Science, Innovation and Universities
Project name : -
Grant ID : RYC‐2015‐17236
Funding program : Spanish Ministry of Science, Innovation and Universities and the European Regional Development Fund
Funding organization : Spanish Ministry of Science, Innovation and Universities
Project name : -
Grant ID : BFU2017‐86026‐R
Funding program : Spanish Ministry of Science, Innovation and Universities and the European Regional Development Fund
Funding organization : Spanish Ministry of Science, Innovation and Universities
Project name : -
Grant ID : AGAUR 2017 SGR 1565
Funding program : -
Funding organization : Generalitat de Catalunya

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Title: Human Brain Mapping
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: New York : Wiley-Liss
Pages: - Volume / Issue: 40 (10) Sequence Number: - Start / End Page: 3078 - 3090 Identifier: ISSN: 1065-9471
CoNE: https://pure.mpg.de/cone/journals/resource/954925601686