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This study was aimed to further our investigations on the high frequency components of human visual evoked potentials (VEP). By using stimulations in the form of optic step functions, we measured (Cz-ear lobe) VEPs with 512 real data points in a total recording time of 20.48 msec in normal adults (N = 12). The peaks in the transient evoked potentials occurred with approximate latencies of 0.5, 1.0, 1.5, 2.5 and 5.0 msec. Transforming the individual time responses to the frequency domain by the Fourier Transform, maxima were obtained in 200, 400, 700, 1200 and 2200 Hz positions in the amplitude frequency characteristics. The findings were compared with those of a similar study on the auditory system. It is stated that the response activities of 200 Hz and 2200 Hz are unique to the visual system.
S Karakaş, and
E Başar
January 1999,
Electroencephalography and clinical neurophysiology. Supplement,
S Karakaş, and
E Başar
September 1968,
Electroencephalography and clinical neurophysiology,
S Karakaş, and
E Başar
May 2006,
Neuroreport,
S Karakaş, and
E Başar
April 2004,
Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology,
S Karakaş, and
E Başar
December 1967,
Electroencephalography and clinical neurophysiology,
S Karakaş, and
E Başar
July 1967,
Revue neurologique,
S Karakaş, and
E Başar
August 1977,
Journal of bioengineering,
S Karakaş, and
E Başar
January 1990,
Electroencephalography and clinical neurophysiology,
S Karakaş, and
E Başar
April 1988,
Perception & psychophysics,
S Karakaş, and
E Başar
November 1971,
Doklady Akademii nauk SSSR,
