Article

Auditory scene analysis following unilateral inferior colliculus infarct.

School of Audiology and Speech Language Pathology, University of Montreal, Quebec, Canada.
Neuroreport (impact factor: 1.66). 12/2007; 18(17):1793-6. DOI:10.1097/WNR.0b013e3282f1a96d pp.1793-6
Source: PubMed

ABSTRACT Event-related potentials in the form of mismatch negativity were recorded to investigate auditory scene analysis capabilities in a person with a very circumscribed haemorrhagic lesion at the level of the right inferior colliculus. The results provide the first objective evidence that processing at the level of the inferior colliculus plays an important role in human auditory frequency discrimination. Moreover, the electrophysiological data suggest that following this unilateral lesion, the auditory pathways fail to reorganize efficiently.

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Keywords

auditory pathways
 
auditory scene analysis capabilities
 
circumscribed haemorrhagic lesion
 
electrophysiological data
 
Event-related potentials
 
first objective evidence
 
human auditory frequency discrimination
 
inferior colliculus
 
mismatch negativity
 

François Champoux