Inter-fibre latency variation across fibres is Gaussian despite single-fibre responses being gamma-shaped
Evidence
Single-fibre responses to electric pulses (estimated by post-stimulus time histograms) showing a fast rise and a slow decline (van den Honert and Stypulkowski 1984 ; Sly et al. 2007 ) may be modelled best with a gamma function (Versnel et al. 1992b ). However, the distribution of response latencies between fibres may be Gaussian. Therefore, we tested fits of CDLDs with gamma functions and with Gaussian functions, and both in guinea pigs and humans we observed superior fits with Gaussian functions. Due to the large population size and assuming that the discharge jitter is smaller within than between fibres, the resulting convolution of the gamma function with the Gaussian distribution could explain the Gaussian-like CDLD. — Dijk, Pim van, Physiology, Psychoacoustics and…, 2382 (
#corroborates, via linked claim)
However, the distribution of response latencies between fibres may be Gaussian. Therefore, we tested fits of CDLDs with gamma functions and with Gaussian functions, and both in guinea pigs and humans we observed superior fits with Gaussian functions. Due to the large population size and assuming that the discharge jitter is smaller within than between fibres, the resulting convolution of the gamma function with the Gaussian distribution could explain the Gaussian-like CDLD. — Dijk, Pim van, Physiology, Psychoacoustics and…, 2435 (
#expands, via linked claim)
Categorization
Category: Causal Relationships
Related
- Across-fibre latency spread, not single-fibre shape, dominates the recorded compound response (similarity 0.93)
- Electrically evoked auditory nerve responses fit Gaussian rather than gamma latency distributions (similarity 0.92)
- Many-fibre population responses become Gaussian despite single-fibre gamma firing patterns (similarity 0.90)
Broader Connections
- Population latency distributions become Gaussian after convolution across many fibres
#corroborates(0.90) — Dijk, Pim van, Physiology, Psychoacoustics and…, 2382 - Across-fibre latency spread, not single-fibre shape, dominates the recorded compound response
#expands(0.85) — Dijk, Pim van, Physiology, Psychoacoustics and…, 2435