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Human visually evoked cortical potentials (VEPs) were elicited by the onset of movement of grating patterns (test stimuli). The most prominent VEP waves N2 and P2 increased with accelerating test stimulus velocity (within a range of 0.2-4 deg/s). Two kinds of rums were presented. Reference runs involved only test stimuli and stationary pattern periods between them. In test runs moving gratings were additionally presented between the test stimuli effecting a stable level of movement adaptation. The additional movement stimulation reduced the VEP amplitudes throughout. The relative amplitude reduction was nearly constant for all test stimulus velocities if a fixed velocity of the adaptation stimulus was used. When the adaptation stimulus velocity was raised (within a range of 0.1-4 deg/s), the relative VEP amplitude became smaller. The results support the additive model of velocity coding in human occipital cortex rather than the substitutive model.
R Müller, and
E Göpfert, and
M Hartwig
October 1974,
The Journal of physiology,
R Müller, and
E Göpfert, and
M Hartwig
March 1997,
Vision research,
R Müller, and
E Göpfert, and
M Hartwig
August 1987,
Documenta ophthalmologica. Advances in ophthalmology,
R Müller, and
E Göpfert, and
M Hartwig
January 1989,
Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie,
R Müller, and
E Göpfert, and
M Hartwig
March 1973,
Activitas nervosa superior,
R Müller, and
E Göpfert, and
M Hartwig
March 1967,
Life sciences,
R Müller, and
E Göpfert, and
M Hartwig
January 1977,
Vision research,
R Müller, and
E Göpfert, and
M Hartwig
April 1987,
Neurology,
R Müller, and
E Göpfert, and
M Hartwig
January 1977,
Transactions of the Ophthalmological Society of New Zealand,
R Müller, and
E Göpfert, and
M Hartwig
January 1979,
Zhurnal vysshei nervnoi deiatelnosti imeni I P Pavlova,
