Compression of auditory space during rapid head turns

Studies of spatial perception during visual saccades have demonstrated compressions of visual space around the saccade target. Here we psychophysically investigated perception of auditory space during rapid head turns, focusing on the "perisaccadic" interval. Using separate perceptual and...

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Published inProceedings of the National Academy of Sciences - PNAS Vol. 105; no. 17; pp. 6492 - 6497
Main Authors Leung, Johahn, Alais, David, Carlile, Simon
Format Journal Article
LanguageEnglish
Published United States National Academy of Sciences 29.04.2008
National Acad Sciences
Subjects
Acoustic Stimulation
Adult
Auditory perception
Auditory Perception - physiology
Azimuth
Biological Sciences
Eye movements
Eyes
Female
Geodetic position
Head Movements - physiology
Humans
Male
Mental stimulation
Movement
Neurons
Perceptual localization
Saccades
Sensory perception
Space perception
Spatial perception
Time Factors
Visual perception
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Summary:Studies of spatial perception during visual saccades have demonstrated compressions of visual space around the saccade target. Here we psychophysically investigated perception of auditory space during rapid head turns, focusing on the "perisaccadic" interval. Using separate perceptual and behavioral response measures we show that spatial compression also occurs for rapid head movements, with the auditory spatial representation compressing by up to 50%. Similar to observations in the visual system, this occurred only when spatial locations were measured by using a perceptual response; it was absent for the behavioral measure involving a nose-pointing task. These findings parallel those observed in vision during saccades and suggest that a common neural mechanism may subserve these distortions of space in each modality.
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Edited by Melvyn Goodale, University of Western Ontario, London, ON, Canada, and accepted by the Editorial Board February 12, 2008
Author contributions: J.L., D.A., and S.C. designed research; J.L. performed research; J.L., D.A., and S.C. analyzed data; and J.L. wrote the paper.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.0710837105