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• W56028504 abstract "Event Abstract Back to Event The influence of hypoxia on ERPs to novel and NoGo stimuli in visual oddball tasks Laszlo Balázs1*, I Czigler1 and L.G Pató1 1 Institute for Psychology of the Hungarian Academy of Sciences, Hungary Hypoxia is known to hinder different aspects of cognitive abilities. We have conducted several series of experiments to investigate the influence of hypoxia using behavioral and ERP measures of brain functioning. The results of these experiments are consistent with the assumption that prefrontal areas are particularly vulnerable. Beyond implications concerning mountaineering, flight safety or general medicine these results could also be generalized to other conditions of suboptimal brain functioning such as fatigue and sleep loss. The results of these studies might also serve for better understanding of prefrontal brain functioning. One of these lessons is the dissociation of the sensitivities of two ERP components of known prefrontal origin: the P3 components evoked by Novel and by NoGo stimuli. We studied ERP components in a classical OX task where subjects were presented with a series of letters to react only when letter O (cue) was followed by letter X (target) and ignore any other letters (A,B,C,D,E,F). Novel stimuli (colorful pictures of different butterflies) were also interspersed. Both Novel stimuli and NoGo stimuli (letters A-F preceded by O) evoked P3 components of fronto-central distribution clearly distinguishable from the parietal P3 component evoked by targets. Hypoxia was induced by having the subjects breathe air mixed with N2 in proportions sufficient to maintain 80% O2 saturation. Hypoxia diminished the amplitude of the Novelty response however left the NoGo ERP unchanged. This dissociation is inconsistent with the view that P3nogo and P3nov may be variants of the same component. Unvarying NoGo P3 might signal effortful inhibition of a predominant motor response reflected by similarly uncompromised task performance. Novelty P3 might on the other hand signal involuntary attention to task irrelevant events. This later process might be weakened by depleted resources or by the impairment of some more specific subprocess of apparently prefrontal origin. Conference: 10th International Conference on Cognitive Neuroscience, Bodrum, Türkiye, 1 Sep - 5 Sep, 2008. Presentation Type: Oral Presentation Topic: Change Detection Citation: Balázs L, Czigler I and Pató L (2008). The influence of hypoxia on ERPs to novel and NoGo stimuli in visual oddball tasks. Conference Abstract: 10th International Conference on Cognitive Neuroscience. doi: 10.3389/conf.neuro.09.2009.01.152 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 05 Dec 2008; Published Online: 05 Dec 2008. * Correspondence: Laszlo Balázs, Institute for Psychology of the Hungarian Academy of Sciences, Budapest, Hungary, balazs@cogpsyphy.hu Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Laszlo Balázs I Czigler L.G Pató Google Laszlo Balázs I Czigler L.G Pató Google Scholar Laszlo Balázs I Czigler L.G Pató PubMed Laszlo Balázs I Czigler L.G Pató Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page." @default.
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• W56028504 title "The influence of hypoxia on ERPs to novel and NoGo stimuli in visual oddball tasks" @default.
• W56028504 doi "https://doi.org/10.3389/conf.neuro.09.2009.01.152" @default.
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