Efferent-mediated binaural enhancement builds up over tens of milliseconds after stimulus onset.
Evidence
Figure 2b shows that the compression parameter, c , in channel #6 of the MOC processors was dynamically varying, hence the IOD was relatively smaller at the stimulus onset and increased gradually in time until it reached a plateau effect. The figure also illustrates the time course of this effect. Note that at time = 0 s, compression was identical for the right-ear and the left-ear MOC processors, and equal to the compression in the STD processors (c = 1000). Then, as the output amplitude from the left-ear processor increased, compression in the right-ear processor decreased (i.e., Eq. (1) became more linear). This decreased the output amplitude from the right-ear processor even further, which in turn reduced the inhibitory effect of the right-ear processor on the left-ear processor. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1969
Categorization
Category: Causal Relationships
- QUESTION: Does this gradual buildup mean the MOC reflex mainly benefits steady-state rather than onset localization cues?
Related
- The contralateral efferent reflex strengthens gradually over tens of milliseconds (similarity 0.91)
- The contralateral reflex enhancement evolves dynamically over tens of milliseconds after onset. (similarity 0.89)
- The medial olivocochlear reflex inhibits cochlear compression contralaterally in a graded, output-dependent manner (similarity 0.79)
- The MOCR reduces channel compression when the opposite ear’s output rises (similarity 0.78)