Homo- And Anti-Phasic Stimulation in abr

Vishakha W. Rawool, Bopanna B. Ballachanda

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Homo- and anti-phasic stimulation in ABR. Rawool, V.W. and Ballachanda B.B. (Department of Audiology and Speech Sciences. Purdue University, West Lafayette, Indiana, USA) Scand Audiol 1990, 19(9-15). Effects of homophasic and anti-phasic stimulation on the binaurally evoked auditory brain-stem responses (ABRs) were investigated in 10 normal subjects. Clicks were presented at 47 dB SL with two in-phase (binaural condensation and binaural rarefaction) and two out-of-phase (left ear condensation. right ear rarefaction and right car condensation, left ear rarefaction) stimulus configurations. The earlier of the latencies obtained with homophasic stimulation were compared with the earlier of the latencies obtained with anti-phasic stimulation. Repeated measures ANOVAs on the peaks (P) and toughs (N) of each component, revealed significantly earlier latencies for the anti-phasic condition, for components HN (p<0.049). III P (p<0.012) and VI N (p<0.025). Similar trends were apparent for components IV P (p0.075). VP (p<0.099) and VIP (p<0.12). The results are discussed in terms of the binaural-level difference phenomenon and possible clinical applications.

Original languageEnglish
Pages (from-to)9-15
Number of pages7
JournalScandinavian Audiology
Volume19
Issue number1
DOIs
StatePublished - Jan 1990
Externally publishedYes

Scopus Subject Areas

  • Otorhinolaryngology

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