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Full-Text Articles in American Sign Language
Unique N170 Signatures To Words And Faces In Deaf Asl Signers Reflect Experience-Specific Adaptations During Early Visual Processing, Zed Sevcikova Sehyr, Katherine J. Midgley, Phillipp J. Holcomb, Karen Emmorey, David C. Plaut, Marlene Behrmann
Unique N170 Signatures To Words And Faces In Deaf Asl Signers Reflect Experience-Specific Adaptations During Early Visual Processing, Zed Sevcikova Sehyr, Katherine J. Midgley, Phillipp J. Holcomb, Karen Emmorey, David C. Plaut, Marlene Behrmann
Communication Sciences and Disorders Faculty Articles and Research
Previous studies with deaf adults reported reduced N170 waveform asymmetry to visual words, a finding attributed to reduced phonological mapping in left-hemisphere temporal regions compared to hearing adults. An open question remains whether this pattern indeed results from reduced phonological processing or from general neurobiological adaptations in visual processing of deaf individuals. Deaf ASL signers and hearing nonsigners performed a same-different discrimination task with visually presented words, faces, or cars, while scalp EEG time-locked to the onset of the first item in each pair was recorded. For word recognition, the typical left-lateralized N170 in hearing participants and reduced left-sided asymmetry …