A compound action potential equals single-fibre waveform convolved with spike latency distribution

Evidence

The recorded compound action potential (CAP ) is described as the convolution of the unit response (UR , i.e., the waveform resulting from a single action potential) with the compound discharge latency distribution (CDLD ), the sum of spike events over time of all individual nerve fibres (Goldstein and Kiang 1958 , see also Fig. 1 ). — Dijk, Pim van, Physiology, Psychoacoustics and…, 2383

Categorization

• DEFINE: Core definitional framing: the CAP decomposes into a unit response convolved with a spike-timing histogram, tying physiology to recorded waveform.
• XREF: Convolution model generalizes beyond hearing — same framework underlies population spikes in other sensory systems and even neural population coding. — connects to: Convolution mathematically links LTI system inputs to outputs.; Deconvolution of compound responses reveals two firing components invisible in raw waveforms; Across-fibre latency spread, not single-fibre shape, dominates the recorded compound response (+6 more)
• corroborated: 2 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 2383

Broader Connections

• Across-fibre latency spread, not single-fibre shape, dominates the recorded compound response #expands (0.90)
• Deconvolution of compound responses reveals two firing components invisible in raw waveforms #expands (0.85)
• Population latency distributions become Gaussian after convolution across many fibres #expands (0.85)
• Inter-fibre latency variation across fibres is Gaussian despite single-fibre responses being gamma-shaped #qualifies (0.80)
• Deconvolved nerve-response parameters depend heavily on the assumed unit response waveform #qualifies (0.80)
• Deconvolution reveals firing components invisible in raw eCAP waveforms #exemplifies (0.80) — Dijk, Pim van, Physiology, Psychoacoustics and…, 2446