Steady-state multifocal visual evoked potential (ssmfVEP) using dartboard stimulation as a possible tool for objective visual field assessment
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Paper
Link: https://pubmed.ncbi.nlm.nih.gov/26553198/
Year: 2016
Summary
Purpose: To investigate whether a conventional, monitor-based multifocal visual evoked potential (mfVEP) system can be used to record steady-state mfVEP (ssmfVEP) in healthy subjects and to study the effects of temporal frequency, electrode configuration and alpha waves.
- mfVEPs can be used to assess the visual function of the central visual field, for detection of visual field losses
- multi-frequency technique in which appropriate devices are needed to present different frequencies at different locations, the stimulus frequency in the mfVEP is the same at all test locations
Methods
- Multifocal pattern reversal VEP measurements were performed at a standard pattern-reversal dartboard stimulus with 58 fields was presented monocularly on a 19-inch TFT flat screen
- Temporal frequencies were varied between 6 and 15 Hz
- four-electrodes, cross-shaped electrode fixation device
Results
- ssmfVEP may also be a preferable method in diagnosing glaucoma
- used frequencies that are technically realizable with our monitor system and found responses that were different from statistical noise in the frequency range between 7.5 and 10 Hz.