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    Behavioral and neural evidence of increased attention to the bottom half of the face in deaf signers

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    Authors
    Mitchell, Teresa V.
    Letourneau, Susan M.
    Maslin, Melissa C. T.
    UMass Chan Affiliations
    Intellectual and Developmental Disabilities Research Center
    Shriver Center
    Document Type
    Journal Article
    Publication Date
    2013-02-01
    Keywords
    Neurology
    Neuroscience and Neurobiology
    Speech and Hearing Science
    
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    Link to Full Text
    http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3642984/
    Abstract
    PURPOSE: This study examined the effects of deafness and sign language use on the distribution of attention across the top and bottom halves of faces. METHODS: In a composite face task, congenitally deaf signers and typically hearing controls made same/different judgments of the top or bottom halves of faces presented with the halves aligned or spatially misaligned, while event-related potentials (ERPs) were recorded. RESULTS: Both groups were more accurate when judging misaligned than aligned faces, which indicates holistic face processing. Misalignment affected all ERP components examined, with effects on the N170 resembling those of face inversion. Hearing adults were similarly accurate when judging the top and bottom halves of the faces, but deaf signers were more accurate when attending to the bottom than the top. Attending to the top elicited faster P1 and N170 latencies for both groups; within the deaf group, this effect was greatest for individuals who produced the highest accuracies when attending to the top. CONCLUSIONS: These findings dovetail with previous research by providing behavioral and neural evidence of increased attention to the bottom half of the face in deaf signers, and by documenting that these effects generalize to a speeded task, in the absence of gaze shifts, with neutral facial expressions.
    Source
    Mitchell TV, Letourneau SM, Maslin MC. Behavioral and neural evidence of increased attention to the bottom half of the face in deaf signers. Restor Neurol Neurosci. 2013;31(2):125-39. doi: 10.3233/RNN-120233. PubMed PMID: 23142816; PubMed Central PMCID: PMC3642984. Link to article on publisher's site
    DOI
    10.3233/RNN-120233
    Permanent Link to this Item
    http://hdl.handle.net/20.500.14038/30018
    PubMed ID
    23142816
    Related Resources
    Link to Article in PubMed
    ae974a485f413a2113503eed53cd6c53
    10.3233/RNN-120233
    Scopus Count
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