Sensitivity to interaural correlation change estimates loss of neural synchrony

Evidence

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

Finally, it is important to note that a focus on cognitive contributions does not imply that auditory contributions to SiN perception are unimportant. 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…, 1236

Categorization

• DEFINE: Introduces interaural correlation as a non-invasive suprathreshold probe for neural synchrony, a useful methodological concept.
• QUESTION: How directly does interaural decorrelation sensitivity map onto actual neural dyssynchrony? Worth checking the Wang et al. model.
• corroborated: 3 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 1230; Dijk, Pim van, Physiology, Psychoacoustics and…, 1236
• XREF: connects to: Interaural coherence measures similarity of ear canal signals; Interaural correlation-change detection is a viable temporal processing measure — Dijk, Pim van, Physiology, Psychoacoustics and…, 1240; Short time frames make ILD estimates sensitive to interaural coherence (+2 more)

Broader Connections

• Interaural correlation-change detection is a viable temporal processing measure #corroborates (0.90) — Dijk, Pim van, Physiology, Psychoacoustics and…, 1240
• Interaural envelope timing responses weaken with rising carrier frequency and ear mismatch #expands (0.80)
• Short time frames make ILD estimates sensitive to interaural coherence #qualifies (0.75)
• Interaural noise correlation inversely drives the magnitude of binaural release from masking. #complicates (0.70) — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1562