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  • Title: [Cerebral refractory period of visual evoked potentials following total field and foveal stimulation].
    Author: Gerhard H, Jörg J, Friesacher H.
    Journal: EEG EMG Z Elektroenzephalogr Elektromyogr Verwandte Geb; 1985 Jun; 16(2):81-6. PubMed ID: 3930216.
    Abstract:
    Ten normal subjects of the age of 21 to 57 years were examined with single stimulus- and double stimulus-VEP following checkerboard whole field stimulation, foveal stimulation with a small checkerboard and flash. The latencies of the VEP following foveal stimulation are longer than those following whole field stimulation. There could not be determined a relative refractory period following checkerboard whole field stimulation at double stimulation. There is a relative refractory period following foveal stimulation between 80 and 100 ms. With retrobulbar neuritis at a late stage the relative refractory period is prolonged and it appears at about 150 ms.
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