Cochlear envelope gain is low-pass filtered and decreases with faster beats

Evidence

Response energy at each harmonic of the beat rate decreases as the beat rate increases (Fig. 2 a ), suggesting that envelope gain is subjected to a low-pass filtering (or smoothing) process before it is observed on the BM: this is the spectral counterpart to the decreased gain at higher beat rates (point 2) referred to above. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3628

Three further response characteristics (in addition to the hysteresis) became more pronounced at higher beat rates: (1) the point at which the observed envelopes exhibited their maximal gains (relative to the linearly predicted responses) occurred later and later in the beat cycle, (2) the overall amount of envelope gain decreased, and (3) the peakedness of this gain within the beat-cycle decreased (compare the red and blue curves in Figs. 1 d ). These characteristics were confirmed and quantified by spectral analysis of the envelopes’ temporal gain curves, as illustrated in Fig. 2 . — Dijk, Pim van, Physiology, Psychoacoustics and…, 3643

Categorization

• corroborated: 2 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 3628; Dijk, Pim van, Physiology, Psychoacoustics and…, 3643