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Title: Stronger bilateral efferent influences on cochlear biomechanical activity in musicians than in non-musicians. Author: Perrot X, Micheyl C, Khalfa S, Collet L. Journal: Neurosci Lett; 1999 Mar 12; 262(3):167-70. PubMed ID: 10218882. Abstract: The auditory sensory end organ is under the control of the central nervous system via efferent projections. Contralateral suppression of otoacoustic emissions (acoustic signatures of the cochlear biomechanical activity) provides a non-invasive approach to assess olivocochlear efferent activity in humans. Using this approach, the present study compared professional musicians with musically-inexperienced subjects. The results revealed stronger bilateral cochlear suppression, suggesting larger efferent influences in both ears, in musicians. Furthermore, in indicating no difference in left/right asymmetry of efferent-mediated suppression between the two groups, the present findings suggest that the observed differences in olivocochlear activity reflect bilaterally-enhanced activity of the cortical auditory structures in musicians rather than differences in cerebral hemispheric asymmetry between the two groups.[Abstract] [Full Text] [Related] [New Search]