Gold foil and noncorneal skin electrodes in pattern electroretinograms

S. Rimmer, V. Iragui, Barrett Katz

Research output: Contribution to journalArticle

Abstract

Pattern electroretinograms (PERGs) were recorded in ten subjects employing two varieties of electrodes: a gold foil electrode inserted into the lower fornix, and a gold cup skin electrode overlying the inferior orbit. Recordings were obtained as subjects viewed a checker-board pattern that reversed with a frequency of 2.1 Hz. Check size varied from 4 degrees to 0.25 degrees, at a contrast of 98%. Two additional recordings were obtained with 0.5 degree check size, lower luminance, and lower contrast. The PERG recorded with a skin electrode was similar in configuration to the PERG recorded with a gold foil electrode, but smaller in amplitude. The equation relating the amplitude of the b-wave recorded from the foil electrode (y) to the amplitude of the b-wave recorded from the skin electrode (x) was: y = 0.127 + 2.150x, with an R value of 0.82. Latencies of both the a- and b-waves were comparable under both recording conditions. We conclude PERGs may be adequately recorded with a noncorneal skin electrode. While the gold foil electrode offers larger amplitude waveforms, the skin electrode may be successfully substituted in those patients unable to tolerate corneal contact.

Original languageEnglish (US)
Pages (from-to)299-307
Number of pages9
JournalAmerican Journal of EEG Technology
Volume29
Issue number4
StatePublished - 1989
Externally publishedYes

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ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Gold foil and noncorneal skin electrodes in pattern electroretinograms. / Rimmer, S.; Iragui, V.; Katz, Barrett.

In: American Journal of EEG Technology, Vol. 29, No. 4, 1989, p. 299-307.

Research output: Contribution to journalArticle

Rimmer, S, Iragui, V & Katz, B 1989, 'Gold foil and noncorneal skin electrodes in pattern electroretinograms', American Journal of EEG Technology, vol. 29, no. 4, pp. 299-307.
Rimmer, S. ; Iragui, V. ; Katz, Barrett. / Gold foil and noncorneal skin electrodes in pattern electroretinograms. In: American Journal of EEG Technology. 1989 ; Vol. 29, No. 4. pp. 299-307.
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