Determining the influence of Gaussian blurring on inversion effects with talking faces

Perception of visual speech and the influence of visual speech on auditory speech perception is affected by the orientation of a talker's face, but the nature of the visual information underlying this effect has yet to be established. Here, we examine the contributions of visually coarse (confi...

Full description

Saved in:
Bibliographic Details
Published in:Perception & psychophysics 2002-08, Vol.64 (6), p.932-944
Main Authors: THOMAS, Sharon M, JORDAN, Timothy R
Format: Article
Language:English
Subjects:
Acoustic Stimulation
Biological and medical sciences
Contrast Sensitivity - physiology
Cues
Facial Expression
Fundamental and applied biological sciences. Psychology
Humans
Language
Normal Distribution
Phonetics
Production and perception of spoken language
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Random Allocation
Speech Perception
Verbal Behavior
Visual Perception - physiology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Perception of visual speech and the influence of visual speech on auditory speech perception is affected by the orientation of a talker's face, but the nature of the visual information underlying this effect has yet to be established. Here, we examine the contributions of visually coarse (configural) and fine (featural) facial movement information to inversion effects in the perception of visual and audiovisual speech. We describe two experiments in which we disrupted perception of fine facial detail by decreasing spatial frequency (blurring) and disrupted perception of coarse configural information by facial inversion. For normal, unblurred talking faces, facial inversion had no influence on visual speech identification or on the effects of congruent or incongruent visual speech movements on perception of auditory speech. However, for blurred faces, facial inversion reduced identification of unimodal visual speech and effects of visual speech on perception of congruent and incongruent auditory speech. These effects were more pronounced for words whose appearance may be defined by fine featural detail. Implications for the nature of inversion effects in visual and audiovisual speech are discussed.
ISSN:0031-5117
1532-5962
DOI:10.3758/BF03196797