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Normative Data of Visual Evoked Potential in Children   Renu Yadav

Normative Data of Visual Evoked Potential in Children

84 страниц. 2013 год.
LAP Lambert Academic Publishing
The VEPs represent electrical activity of large populations of neurons in the visual cortex and test the function of the visual pathway from the retina to the occipital cortex. Visual evoked potentials are massed electrical signals generated by occipital cortical areas in response to visual stimulation. Evoked potential techniques are noninvasive and have excellent temporal resolution, thus permitting the study of dynamic changes occurring in the nervous system. The evoked electrophysiological potential of VEP can be extracted using signal averaging from the electroencephalographic activity recorded at the scalp. VEPs can be used to assess the integrity or maturational state of the visual pathway in infants and preverbal children. The VEP responses have been worked out for adult population. However, in children the recording is difficult and their normatives are not consistent across the studies. The effect of age on children VEP is even less worked out. Therefore, this study is an...
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