The multifocal visual evoked potential: An objective measure of visual fields?
نویسندگان
چکیده
منابع مشابه
The multifocal visual evoked potential: An objective measure of visual fields?
We examined the effects of inter-modal attention and mental arithmetic on Humphrey visual field sensitivity and multifocal visual evoked potential (mfVEP) amplitude. Four normally sighted subjects (ages ranging from 24 to 58 years) participated in this study. Monocular visual field sensitivity was measured under two conditions: (1) standard testing condition and (2) while the subject performed ...
متن کاملThe pattern-pulse multifocal visual evoked potential.
PURPOSE To define the pattern-pulse multifocal visual evoked potential (PPMVEP) and determine its characteristics in a sample of normal subjects in terms of amplitude of response attainable, the variation in waveform across visual field, and distribution of potential over the scalp and to compare pattern-pulse with contrast-reversal multifocal stimuli. METHODS VEPs were obtained by concurrent...
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AIMS To examine the ability of the multifocal pattern visual evoked potential (mVEP) to detect field loss in neurological lesions affecting the visual pathway from the chiasm to the cortex. METHOD The mVEPs recorded in the clinic were retrospectively reviewed for any cases involving central neurological lesions. Recordings had been performed with the AccuMap V1.3 objective perimeter, which us...
متن کاملMultifocal topographic visual evoked potential: improving objective detection of local visual field defects.
PURPOSE To investigate the relationships between the pattern stimulation of different parts of the visual field (up to 25 degrees of eccentricity), the electrode position, and the cortical response to improve objective detection of local visual field defects. METHODS The human visual evoked potential (VEP) was assessed using multifocal pseudorandomly alternated pattern stimuli that were corti...
متن کاملMultifocal visual evoked potential in nonorganic visual field loss.
OBJECTIVE To evaluate the use of multifocal visual evoked potentials in the diagnosis of nonorganic visual field loss. METHODS Five patients with unexplained visual field loss underwent full neuro-ophthalmic examination, Humphrey visual field testing, and multifocal visual evoked potential testing using the Accumap objective perimeter (ObjectiVision Pty Ltd, Sydney, Australia). RESULTS In a...
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ژورنال
عنوان ژورنال: Vision Research
سال: 2005
ISSN: 0042-6989
DOI: 10.1016/j.visres.2004.11.010