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The auditory system uses coarse physical delay lines plus fine phase-based matching for ITD

The auditory system uses coarse physical delay lines plus fine phase-based matching for ITD

Properties1

tags	ja-picks, define, causal_relationships, trade, singleton, category/causal-relationships

Sep 20, 20261 min read

The auditory system uses coarse physical delay lines plus fine phase-based matching for ITD

Evidence

We propose that the auditory system “coarsely” matches ipsilateral and contralateral latencies using physical delay lines, so that inputs arrive at NL at about the same time, and then “finely” matches latency modulo 2π to achieve microsecond ITD precision. — Dijk, Pim van, Physiology, Psychoacoustics and…, 2839

Categorization

DEFINE: Explains the coarse/fine two-stage mechanism for achieving microsecond interaural time precision.

The auditory system uses coarse physical delay lines plus fine phase-based matching for ITD
Evidence
Categorization

Backlinks

A fixed ITD spans more cycles at high frequencies than low
Click stimuli achieve neural timing precision of about twenty microseconds
Group delay audibility threshold is 1.6 to 2 milliseconds
The brain measures interaural delay via coincidence-detector neurons and delay-line axons
Dijk, Pim van — Physiology, Psychoacoustics and Cognition in Normal and Impaired Hearing