Visually evoked potentials to pseudorandom binary sequence stimulation. Preliminary clinical trails
R. Srebro and W. W. Wright
We report results using a new stimulus for clinical testing of visually
evoked potentials (VEPs). The stimulus was the modulation of the luminance
of a large unpatterned field by a temporal pseudorandom binary sequence.
The stimulus was similar to Gaussian white noise in that a large number of
sinusoidal harmonics were presented concurrently. It has the important
advantage that conventional signal averaging techniques can be used to
analyze the VEP. Abnormal VEP responses were obtained when the stimulus was
applied to patients with minimal macular and optic nerve disease.
