The influence of sleep deprivation and knowledge of results on perceptual encoding |
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| Authors: | F J Steyvers |
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| Affiliation: | 1. Department of Medical Psychology and Behavioral Neurobiology, University of Tuebingen, Otfried Mueller-Strasse 25, 72076 Tuebingen, Germany;2. Department of Neuroendocrinology, University of Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany;3. Children’s Hospital, University of Zuerich, Steinwiesstrasse 75, 8032 Zuerich, Switzerland;1. Faculty of Psychology, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), UMR 7364—UNISTRA/CNRS, Strasbourg, France;2. Centre d’Investigations Neurocognitives et Neurophysiologiques (CI2N), UMS 3489—UNISTRA/CNRS, Strasbourg, France;1. NYU Sleep Disorders Center, NYU School of Medicine, New York, NY, USA;2. Center for Neural Science, New York University, New York, NY, USA;3. Graduate School of Education, The University of Tokyo, Tokyo, Japan;4. Center for Brain Health, NYU School of Medicine, New York, NY, USA;5. NYU Polytechnic School of Engineering, Brooklyn, NY, USA;6. Department of Psychiatry, NYU School of Medicine, New York, NY, USA;1. Institute of Medical Psychology and Behavioral Neurobiology, Eberhard Karls Universität Tübingen, Silcherstr. 5, 72076 Tübingen, Germany;2. Department of Psychology, LMU Munich, Leopoldstr. 13, 80802 München, Germany;3. Bernstein Center for Computational Neuroscience, LMU Munich, Groβhadernerstr. 2, 82152 Planegg-Martinsried, Germany;1. Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Maindy Rd, Cardiff, CF24 4HQ, UK;2. Department of Biomedical Engineering, University of Los Andes, Cr. 1 No 18a-12, Bogotá, 111711, Colombia |
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| Abstract: | This study investigates the way sleep deprivation effects on perceptual processes are modulated by knowledge of results (KR). In a choice-reaction task, signal quality was manipulated, combined with and without KR and under increasing levels of lack of sleep. It was found that the decrease of performance due to sleep deprivation was larger when stimuli were degraded. KR counteracted the effect of sleep deprivation; however, KR improved performance irrespective of signal quality. Hence, sleep deprivation seems to have a twofold effect on performance; one effect on perceptual processing, which is insensitive to KR, and another effect on some different processing stage, which is sensitive to KR. The results were interpreted in terms of a model of human performance (Sanders 1983) in which a distinction is made between two energetical mechanisms, ‘arousal’ and ‘activation’, subserving perceptual and motor stages of information processing, respectively. Thus, KR appears to compensate for the deficiency of one type of energetical mechanism, caused by sleep deprivation. Yet, this compensation does not appear to be the result of increased arousal, because, irrespective of KR, the performance decrement caused by signal degradation was more pronounced with lack of sleep. |
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