Journal article
Sign language and pantomime production differentially engage frontal and parietal cortices
Language and cognitive processes, Vol.26(7), pp.878-901
08/01/2011
DOI: 10.1080/01690965.2010.492643
PMCID: PMC3167215
PMID: 21909174
Abstract
We investigated the functional organisation of neural systems supporting language production when the primary language articulators are also used for meaningful, but nonlinguistic, expression such as pantomime. Fourteen hearing nonsigners and 10 deaf native users of American Sign Language (ASL) participated in an H
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O-positron emission tomography study in which they generated action pantomimes or ASL verbs in response to pictures of tools and manipulable objects. For pantomime generation, participants were instructed to "show how you would use the object". For verb generation, signers were asked to "generate a verb related to the object". The objects for this condition were selected to elicit handling verbs that resemble pantomime (e.g., TO-HAMMER, hand configuration and movement mimic the act of hammering) and nonhandling verbs that do not (e.g., POUR-SYRUP, produced with a "Y" handshape). For the baseline task, participants viewed pictures of manipulable objects and an occasional nonmanipulable object and decided whether the objects could be handled, gesturing "yes" (thumbs up) or "no" (hand wave). Relative to baseline, generation of ASL verbs engaged left inferior frontal cortex, but when nonsigners produced pantomimes for the same objects, no frontal activation was observed. Both groups recruited left parietal cortex during pantomime production. However, for deaf signers the activation was more extensive and bilateral, which may reflect a more complex and integrated neural representation of hand actions. We conclude that the production of pantomime vs. ASL verbs (even those that resemble pantomime) engages partially segregated neural systems that support praxic vs. linguistic functions.
Details
- Title: Subtitle
- Sign language and pantomime production differentially engage frontal and parietal cortices
- Creators
- Karen Emmorey - School of Speech, Language, and Hearing Sciences , San Diego State UniversityStephen McCullough - San Diego State Research FoundationSonya Mehta - Integrated Brain Imaging Center, Departments of Radiology and Psychology , University of WashingtonLaura L. B Ponto - Department of Radiology , University of IowaThomas J Grabowski - Integrated Brain Imaging Center, Departments of Radiology and Psychology , University of Washington
- Resource Type
- Journal article
- Publication Details
- Language and cognitive processes, Vol.26(7), pp.878-901
- DOI
- 10.1080/01690965.2010.492643
- PMID
- 21909174
- PMCID
- PMC3167215
- NLM abbreviation
- Lang Cogn Process
- ISSN
- 0169-0965
- eISSN
- 1464-0732
- Publisher
- Taylor & Francis Group
- Language
- English
- Date published
- 08/01/2011
- Academic Unit
- Radiology; Pharmaceutical Sciences and Experimental Therapeutics
- Record Identifier
- 9984051978302771
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