Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 441262
Title Intermittent stimulus presentation stabilizes neuronal responses in macaque area MT
Author(s) Klink, P.C.; Oleksiak, A.; Lankheet, M.J.M.; Wezel, R.J.A.
Source Journal of Neurophysiology 108 (2012)8. - ISSN 0022-3077 - p. 2101 - 2114.
DOI http://dx.doi.org/10.1152/jn.00252.2012
Department(s) Experimental Zoology
WIAS
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) local-field potentials - primary visual-cortex - structure-from-motion - binocular-rivalry - ambiguous patterns - perceptual memory - attention - variability - adaptation - brain
Abstract Klink PC, Oleksiak A, Lankheet MJ, van Wezel RJ. Intermittent stimulus presentation stabilizes neuronal responses in macaque area MT. J Neurophysiol 108: 2101-2114, 2012. First published July 25, 2012; doi: 10.1152/jn.00252.2012.-Repeated stimulation impacts neuronal responses. Here we show how response characteristics of sensory neurons in macaque visual cortex are influenced by the duration of the interruptions during intermittent stimulus presentation. Besides effects on response magnitude consistent with neuronal adaptation, the response variability was also systematically influenced. Spike rate variability in motion-sensitive area MT decreased when interruption durations were systematically increased from 250 to 2,000 ms. Activity fluctuations between subsequent trials and Fano factors over full response sequences were both lower with longer interruptions, while spike timing patterns became more regular. These variability changes partially depended on the response magnitude, but another significant effect that was uncorrelated with adaptation-induced changes in response magnitude was also present. Reduced response variability was furthermore accompanied by changes in spike-field coherence, pointing to the possibility that reduced spiking variability results from interactions in the local cortical network. While neuronal response stabilization may be a general effect of repeated sensory stimulation, we discuss its potential link with the phenomenon of perceptual stabilization of ambiguous stimuli as a result of interrupted presentation.
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