Spatio-temporal tuning of VEPs: Effect of mode of stimulation

18Citations
Citations of this article
21Readers
Mendeley users who have this article in their library.

Abstract

The spatial tuning function of the 8 Hz reversal Visual Evoked Potential (VEP) is frequently bimodal. This amplitude 'notch' largely disappears with 16 Hz pattern onset-offset (on-off) stimulation. To investigate the effect of temporal frequency on this phenomenon, we tested seven subjects using a range of rates centred on 8 Hz (reversal) and 16 Hz (on-off). With reversal, a deep notch was present at all temporal frequencies. A much shallower notch was evident with on-off. The on-off and reversal functions differed only in their low spatial frequency branches (below 4.5 c deg-1) where, as temporal frequency decreased, the reversal response was reduced by 50%, whilst the on-off responses doubled in amplitude. Thus, although they behave differently with on-off and reversal, multiple spatial frequency mechanisms are evident with both forms of stimulation. Copyright (C) 1999 Elsevier Science Ltd.

Cite

CITATION STYLE

APA

Parry, N. R. A., Murray, I. J., & Hadjizenonos, C. (1999). Spatio-temporal tuning of VEPs: Effect of mode of stimulation. Vision Research, 39(21), 3491–3497. https://doi.org/10.1016/S0042-6989(99)00098-X

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free