Evoked auditory responses share morphology whether stimulated acoustically or electrically
Evidence
The morphology of the response was similar for acoustic and electric stimulation and consisted of a first positive peak (P1) followed by a negative peak (N1) and a second positive peak (P2). The amplitude of the response was arbitrarily defined as the difference in voltage between the negative peak and the second positive peak. The response amplitude varied from about 20 to 600 μV depending on subjects and pulse shapes. The dynamic range, as defined by the difference between the maximum stimulation level and the minimum level that produced a visually detectable response ranged from about 3 to 18 dB, which compare well with usual values of dynamic range for individual CI electrodes. — Dijk, Pim van, Physiology, Psychoacoustics and…, 2302
Categorization
Category: Factual Claims
- DEFINE: Defines how response amplitude and dynamic range are measured for electrically evoked potentials.
Related
- Inferior colliculus electrical responses mirror acoustic response morphology (similarity 0.87)
- Electrically evoked brainstem responses are larger and faster than acoustic ones (similarity 0.81)
- Human cochlear-region differences alter electrically evoked compound action potential timing and width (similarity 0.80)
- Pulse polarity differences translate to roughly 30 dB of acoustic hearing range (similarity 0.79)
- Deconvolving the eCAP reveals two separate auditory nerve firing components. (similarity 0.79)