Dynamic visual speech perception in a patient with visual form agnosia.

Full Abstract

To examine the role of dynamic cues in visual speech perception, a patient with visual form agnosia (DF) was tested with a set of static and dynamic visual displays of three vowels. Five conditions were tested: (1) auditory only which provided only vocal pitch information, (2) dynamic visual only, (3) dynamic audiovisual with vocal pitch information, (4) dynamic audiovisual with full voice information and (5) static visual only images of postures during vowel production. DF showed normal performance in all conditions except the static visual only condition in which she scored at chance. Control subjects scored close to ceiling in this condition. The results suggest that spatiotemporal signatures for objects and events are processed separately from static form cues. Copyright 2002 Lippincott Williams & Wilkins

Author information

Author/s: Munhall, K G (KG); Servos, P (P); Santi, A (A); Goodale, M A (MA);

Affiliation: Department of Psychology, Queen's University, Kingston, Ontario, Canada. munhallk(-atsign-)psyc.queensu.ca

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.

Journal: Neuroreport (Neuroreport), published in England. (Language: eng)

Reference: 2002-Oct; vol 13 (issue 14) : pp 1793-6

Dates: Created 2002/10/23; Completed 2003/01/15; Revised 2006/11/15;

PMID: 12395125, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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