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Journal Article

Cortical visual processing is temporally dispersed by luminance in human subjects

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons84000

Kammer,  T
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Former Department Comparative Neurobiology, Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons84045

Lehr,  L
Former Department Comparative Neurobiology, Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons84015

Kirschfeld,  K
Former Department Comparative Neurobiology, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Citation

Kammer, T., Lehr, L., & Kirschfeld, K. (1999). Cortical visual processing is temporally dispersed by luminance in human subjects. Neuroscience Letters, 263(2-3), 133-136. doi:1016/S0304-3940(99)00137-8.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-E6D7-F
Abstract
Increasing the intensity of a stimulus such as luminance results in faster processing of the signal and therefore decreases simple motor reaction time (RT). We studied the latencies of visual evoked potentials (VEPs, N80, P100, N130) and RTs in eight subjects to flashing spots of light while varying the luminance of the spots from 1 to 1000 cd/m(2). The data show that processing time as a function of intensity is modified not only at the retina but also at later processing sites. This indicates a temporal dispersion of the Visual signal over the whole processing stream from visual input all the way to motor output. (C) 1999 Elsevier Science Ireland Ltd. All rights reserved.