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  Visual attention and metacontrast modify latency to perception in opposite directions

Kirschfeld, K., & Kammer, T. (2000). Visual attention and metacontrast modify latency to perception in opposite directions. Vision Research, 40(9), 1027-1033. doi:10.1016/S0042-6989(00)00040-7.

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Kirschfeld, K1, 2, Author           
Kammer, T1, 2, 3, Author           
Affiliations:
1Former Department Comparative Neurobiology, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497800              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              
3Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              

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 Abstract: In human observers, cue-induced visual attention (‘bottom-up‘ transient focal attention) shortens the latency of perception. Metacontrast reduces the
intensity of perception and can even obliterate it. We show that a close relationship exists between both, but that their effects are reversed: cue-induced visual
attention not only shortens latency but also intensifies perception, and metacontrast not only lowers intensity of perception but also prolongs latency. A common
neurophysiological mechanism for both is possible. Indirect evidence suggests that this could be a subthreshold modulation of neuronal thresholds by de- and
hyperpolarization. (C) 2000 Elsevier Science Ltd. All rights reserved.

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 Dates: 2000-04
 Publication Status: Issued
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 Identifiers: DOI: 10.1016/S0042-6989(00)00040-7
BibTex Citekey: 90
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Title: Vision Research
  Other : Vision Res.
Source Genre: Journal
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Publ. Info: Amsterdam : Pergamon
Pages: - Volume / Issue: 40 (9) Sequence Number: - Start / End Page: 1027 - 1033 Identifier: ISSN: 0042-6989
CoNE: https://pure.mpg.de/cone/journals/resource/954925451842