Optimal interaural phase difference for cortical following responses depends on the IPM rate

Evidence

Responses obtained at 6.8 Hz IPM rate were maximal for IPDs spanning ±45–±90°, whereas responses obtained at 13.4 Hz IPM rate increased monotonically with increasing IPD. — Dijk, Pim van, Physiology, Psychoacoustics and…, 2964

Categorization

• QUESTION: A rate-dependent tuning pattern (peaked at mid-IPD for slow, monotonic for fast) suggests two different neural mechanisms — worth chasing how this maps onto known binaural coincidence model behavior.
• SEED: Angle: the shape of a neural tuning curve as a fingerprint of the underlying mechanism — how response-vs-parameter curve shapes reveal whether a system is peak-picking or level-integrating.