منابع مشابه
Identification of the neural sources of the pattern-reversal VEP.
This study aimed to characterize the neural generators of the early components of the visual-evoked potential (VEP) to pattern-reversal gratings. Multichannel scalp recordings of VEPs and dipole modeling techniques were combined with functional magnetic resonance imaging (fMRI) and retinotopic mapping in order to estimate the locations of the cortical sources giving rise to VEP components in th...
متن کاملA principal component analysis of multifocal pattern reversal VEP.
Multifocal visual evoked potentials (mfVEP) were recorded with three channels from 31 control subjects. A principal component analysis was applied to all local responses. The first principal component reversed polarity above and below the horizontal meridian in the case of the midline channel and across the vertical meridian in the case of the lateral channel. In addition, the first principal c...
متن کاملMaturation of the pattern-reversal VEP in human infants: a theoretical framework
Visual evoked potentials to pattern reversal (PR-VEPs) are used to assess the integrity and maturation of the visual pathways in infants and young children. To establish normal ranges and to facilitate interpolation, we consider the maturation rate of PR-VEPs using published normative data. Curves based on the logistic function (a sigmoid model) are introduced and compared with three other mode...
متن کاملOscillatory motion but not pattern reversal elicits monocular motion VEP biases in infantile esotropia
Patients with early disruptions of binocularity show cortical directional asymmetries in their steady state monocular VEP response to oscillatory motion. The VEP directional asymmetry is characterized by significant first harmonic components that show a 180 degrees difference in the response phase between the two eyes. By contrast, the normal response is dominated by even-order response harmoni...
متن کاملTopography of the chromatic pattern-onset VEP.
The chromatic pattern-onset VEP has been used successfully as a sensitive and objective technique to determine congenital and acquired color vision deficiency. It also has been applied to characterize development, maturation and aging of the chromatic visual pathways. Here we determine the topographic components of the full-field VEP using the multifocal technique. Recordings were made with the...
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ژورنال
عنوان ژورنال: Cephalalgia
سال: 1996
ISSN: 0333-1024,1468-2982
DOI: 10.1046/j.1468-2982.1996.1602077-4.x