Interaural coherence measures similarity of ear canal signals

Evidence

Duration thresholds were obtained for detecting a change in interaural correlation (from 0 to 1) in the initial portion of a 1-s broadband (0–10 kHz) noise presented simultaneously to both ears. A three-down, one-up 2AFC procedure with 12 reversals, of which the last eight were used to estimate the threshold, was used. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1240 (#expands, via linked claim)

Besides overall hearing sensitivity we also obtained a suprathreshold measure of temporal processing by measuring the sensitivity to change in interaural correlation. This task is assumed to estimate loss of neural synchrony in the auditory system (Wang et al. 2011 ), which in turn has been suggested to affect SiN perception. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1230 (#expands, via linked claim)

Categorization

• XREF: connects to: Interaural correlation-change detection is a viable temporal processing measure — Dijk, Pim van, Physiology, Psychoacoustics and…, 1240; Sensitivity to interaural correlation change estimates loss of neural synchrony — Dijk, Pim van, Physiology, Psychoacoustics and…, 1230; Inter-channel coherence ICC measures signal similarity normalized from 0 to 1 (+1 more)

Related

• Interaural correlation-change detection is a viable temporal processing measure (similarity 0.92)
• Sensitivity to interaural correlation change estimates loss of neural synchrony (similarity 0.92)
• Forward temporal structure is essential to auditory scene analysis. (similarity 0.86)
• Inter-channel coherence ICC measures signal similarity normalized from 0 to 1 (similarity 0.84)
• The ear detects binaural delays finer than individual neuron timing supports (similarity 0.81)
• Interaural time differences are computed by cross-correlating the two ear signals (similarity 0.81)
• Detecting noise decorrelation onset measures binaural temporal acuity. (similarity 0.81)
• Low-frequency interaural level differences cue source distance and signal coherence. (similarity 0.80)
• Clinical audiogram testing standardizes stimulus durations to exploit temporal integration (similarity 0.80)
• Loss of neural synchrony can impair speech-in-noise perception. (similarity 0.80)
• The ear resolves low-frequency direction by measuring phase shift (similarity 0.79)
• Carrier and envelope time shifts produce lateralization over complementary frequency ranges (similarity 0.79)
• The IACC maximum value estimates interaural coherence between the two ear signals (similarity 0.79)
• Interaural envelope timing responses weaken with rising carrier frequency and ear mismatch (similarity 0.79)
• The ear achieves spatial hearing through signal analysis rather than directional receptors (similarity 0.79)

Broader Connections

• Inter-channel coherence ICC measures signal similarity normalized from 0 to 1 #expands (0.90)
• Interaural correlation-change detection is a viable temporal processing measure #expands (0.80) — Dijk, Pim van, Physiology, Psychoacoustics and…, 1240
• Sensitivity to interaural correlation change estimates loss of neural synchrony #expands (0.80) — Dijk, Pim van, Physiology, Psychoacoustics and…, 1230