Relationship Between Caudal and Rostral Auditory Efferent Pathways: A Preliminary Investigation


  • Shezeen Abdul Gafoor Junior Research Fellow
  • Ajith Kumar Professor



auditory efferent system, auditory sensory gating, ; contralateral inhibition of otoacoustic emissions, inhibition


Perception of sounds involves excitatory as well as inhibitory activities. Inhibition occurs throughout the auditory system, from the auditory cortex to the cochlea, and is predominantly mediated by the auditory efferent system. In the present study, we assessed the interactions between two measures of inhibition in neurotypical adults—contralateral inhibition of otoacoustic emissions, which is a subcortical measure, and sensory gating, a cortical measure. We found an inverse relationship between these two functions. The possible reasons for this are discussed with an implication to the auditory efferent system.


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