Visual localization of sounds
| Autor: | Fabrizio Rasi, Elisabetta Làdavas, Nadia Bolognini |
|---|---|
| Přispěvatelé: | Bolognini, N, Rasi, F, Làdavas, E, Bolognini N, Rasi F, Ladavas E. |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Vision Disparity
Cognitive Neuroscience Auditory spatial deficit Experimental and Cognitive Psychology Stimulus (physiology) M-PSI/02 - PSICOBIOLOGIA E PSICOLOGIA FISIOLOGICA Behavioral Neuroscience Multisensory integration Humans Sound Localization Right hemisphere auditory spatial deficit multisensory integration audio visual interaction spatial attention Aged Analysis of Variance Brain Mapping Crossmodal Auditory Perceptual Disorders Audio–visual interaction Spatial attention Visual localization Fixation point Sound Acoustic Stimulation Space Perception Visual Perception Auditory localization Female Psychology Neuroscience Photic Stimulation Spatial disparity |
| Popis: | Circumscribed hemispheric lesions in the right hemisphere have been shown to impair auditory spatial functions. Due to a strong crossmodal links that exist between vision and audition, in the present study, we have hypothesized that multisensory integration can play a specific role in recovery from spatial representational deficits. To this aim, a patient with severe auditory localization defect was asked to indicate verbally the spatial position where the sound was presented. The auditory targets were presented at different spatial locations, at 8 degrees, 24 degrees, 40 degrees, 56 degrees to either sides of the central fixation point. The task was performed either in a unimodal condition (i.e., only sounds were presented) or in crossmodal conditions (i.e., a visual stimulus was presented simultaneously to the auditory target). In the crossmodal conditions, the visual cue was presented either at the same spatial position as the sound or at 16 degrees or 32 degrees, nasal or temporal, of spatial disparity from the auditory target. The results showed that a visual stimulus strongly improves the patient's ability to localize the sounds, but only when it was presented in the same spatial position of the auditory target. |
| Databáze: | OpenAIRE |
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