Short latency vestibular evoked potentials in the Japanese quail (Coturnix coturnix japonica)

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19 Scopus citations

Abstract

Short-latency veslibular-evoked potentials to pulsed linear acceleration were characterized in the quail. Responses occurred within 8 ms following the onset of stimuli and were composed of a series of positive and negative peaks. The latencies and amplitudes of the first four peaks were quantitatively characterized. Mean latencies at 1.0 g ms-1 ranged from 1265 ± 208 μs (P1, N = 18) to 4802 ± 441 μs (N4, N - 3). Amplitudes ranged from 3.72 ± 1.51 μV (P1/N1, N = 18) to 1.49 ± 0.77 μV (P3/N3. N = 16). Latency-intensity (LI) slopes ranged from -38.7 ± 7.3 μs dB-1 (P1, N = 18) to -71.6 ± 21.9 μs dB-1 (N3, N = 15) and amplitude-intensity (AI) slopes ranged from 0.20 ± 0.08 μV dB-1 (P1/N1, N = 18) to 0.07 ± 0.04 μV dB-1 (P3/N3, N = 11). The mean response threshold across till animals was -21.83 ± 3.34 dB re: 1.0 g ms-1 (N = 18). Responses remained after cochlear extirpation showing that they could not depend critically on cochlear activity. Responses were eliminated by destruction of the vestibular end organs, thus showing that responses depended critically and specifically on the vestibular system. The results demonstrate that the responses are vestibular and the findings provide a scientific basis for using vestibular responses to evaluate vestibular function through ontogeny and senescence in the quail.

Original languageEnglish (US)
Pages (from-to)631-638
Number of pages8
JournalJournal of Comparative Physiology - A Sensory, Neural, and Behavioral Physiology
Volume180
Issue number6
DOIs
StatePublished - Jun 1997

Keywords

  • Bird
  • Generators
  • Labyrinth
  • Linear jerk
  • Vestibular function

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Physiology
  • Animal Science and Zoology
  • Behavioral Neuroscience

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