The lateralization of lip-reading: A second look

Author(s): Degelder, B., Dehaan, E.

Journal/Book: Neuropsychologia. 1996; 34: The Boulevard, Langford Lane, Kidlington, Oxford, England OX5 1GB. Pergamon-Elsevier Science Ltd. 1235-1240.

Abstract: Photographs of unfamiliar speaking faces were matched by normal right-handed subjects on the basis of perceived mouth-shape (i.e. visible speech sound) across different face-views. A clear left-hemisphere (RVF) processing advantage emerged, which was absent when the task was that of identity matching. In contrast to earlier proposals, the extraction of lip-shape from face photographs may be better managed by left-hemisphere- than right-hemisphere mechanisms even at its initial stages. This may contribute to the observed patterns of dissociations in speech-reading and in audiovisual speech-processing in neurological patients.

Note: Article R Campbell, Univ Coll London, Dept Human Commun Sci, Chandler House, Wakefield St, London WC1N 1PG, England

Keyword(s): speech-reading; lip-reading laterality; mouth-shape; face-processing; POSITRON EMISSION TOMOGRAPHY; SPEECH-PERCEPTION; AUDITORY INFORMATION; FACE; INTEGRATION

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