The 3-channel Lissajous' trajectory of the auditory brain-stem response. IV. Effects of electrode position in the cat

William H. Martin, Don L. Jewett, Michael G. Randolph, John S. Williston, John N. Gardi

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

Three-channel Lissajous' trajectories (3-CLTs) of the auditory brain-stem response (ABR) were recorded from anesthetized adult cats with 2 different orthogonal and 3 different non-orthogonal recording configurations. Click stimuli were presented monaurally at 70 dB impulse SPL. Planar analysis identified 12 planar segments regardless of electrode configurations. Boundaries, apex latencies, and durations of the planar segments were relatively unchanged by changes in recording locations, in contrast to changes in single-channel ABR peak latencies and amplitudes. The 3-CLT orientation and shape were maintained in voltage-space despite changes in electrode positions, provided that the recording axes remained orthogonal and a simple cosine correction was applied. Non-orthogonal recording axes resulted in 3-CLTs which differed in shape from 3-CLTs recorded from orthogonal recording axes, but had similar planar-segment boundaries and durations. We conclude that the 3-CLT has characteristics which are generator-dependent and unaffected by electrode position if appropriate spatial corrections are applied.

Original languageEnglish (US)
Pages (from-to)341-348
Number of pages8
JournalElectroencephalography and Clinical Neurophysiology/ Evoked Potentials
Volume68
Issue number5
DOIs
StatePublished - Sep 1987
Externally publishedYes

Keywords

  • (Cat)
  • 3-Channel Lissajous' trajectory
  • 3-Dimensional
  • Auditory brain-stem response
  • Mapping
  • Planar segment

ASJC Scopus subject areas

  • Neuroscience(all)
  • Clinical Neurology

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