Cochlear hearing loss spares the binaural processing of envelope cues

Evidence

Although the results of Hawkins and Wightman ( 1980 ), described in Sect. 3.3 , suggested that hearing loss adversely affected the discrimination of ITD carried in ENVp , King et al. ( 2014 ) found that thresholds for detecting IPDs in ENVp were not significantly correlated with absolute thresholds. Also, Léger et al. ( 2015 ) reported that thresholds for detecting IPDs in ENVp were similar for subjects with normal and impaired hearing (both groups had a wide range of ages). Overall, the results suggest that hearing loss does not markedly affect the ability to process binaural ENV cues. — Dijk, Pim van, Physiology, Psychoacoustics and…, 822

Categorization

• XREF: A clean dissociation parallel: ENV spared versus TFS degraded binaurally mirrors the monaural results for AM detection vs DLFs. — connects to: Cochlear hearing loss spares envelope processing but amplifies perceived fluctuation via recruitment; Cochlear hearing loss raises interaural time discrimination thresholds independent of age — Dijk, Pim van, Physiology, Psychoacoustics and…, 817; Age and hearing loss damage TFS but spare envelope cue processing (+3 more)
• corroborated: 3 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 822

Broader Connections

• Binaural envelope-delay sensitivity drops once tone separation exceeds the critical band. #expands (0.85) — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 911