Korean J Ophthalmol.  2011 Oct;25(5):334-340. 10.3341/kjo.2011.25.5.334.

Study for Analysis of the Multifocal Visual Evoked Potential

• Park S
• Park SH
• Chang JH
• Ohn YH

• KMID: 1098636
• DOI: http://doi.org/10.3341/kjo.2011.25.5.334

Abstract

PURPOSE
To introduce the clinical utility of the absolute value of the reconstructed waveform method in the analysis of multifocal visual evoked potential (mfVEP).
METHODS
The mfVEP with 4-channel recording was performed using RETIscan(R) on 10 eyes of 10 normal subjects. Amplitudes were obtained from ring-shaped 6 areas and 4 sectors. The best visual evoked potential (VEP) response method and the absolute value of the reconstructed waveform method were compared in terms of analysis of the amplitudes. In order to assess the false positive rate of the examination, stimuli were administered with one-half of the cathode ray tube (CRT) monitor completely covered and the results were compared using 2 methods.
RESULTS
The amplitudes in 6 areas and 4 sectors analyzed with the best VEP response method and the absolute value of the reconstructed waveform method showed no statistical difference (p > 0.05). The amplitude in the stimuli-blocked area of the absolute value of the reconstructed waveform method was smaller than that of the best VEP response method (p < 0.05) and the amplitude of the stimuli area showed no substantial difference between two methods (p > 0.05).
CONCLUSIONS
The absolute value of the reconstructed waveform method has similar reproducibility and lower level of false positives relative to the best VEP response method. Therefore, it can be considered as a useful method in the analysis of the mfVEP.

Keyword

Absolute value of the reconstructed waveform method; Best visual evoked potential response method; Multifocal visual evoked potential

MeSH Terms

Adult
Automatic Data Processing
Evoked Potentials, Visual/*physiology
Female
Follow-Up Studies
Humans
Male
Reference Values
Reproducibility of Results
Retina/*physiology
Retrospective Studies
*Visual Fields