About: Late Divergence of Target and Nontarget ERPs in a Visual Oddball Task

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Different mental operations were expected in the late phase of intracerebral ERPs obtained in the visual oddball task with mental counting. Therefore we searched for late divergences of target and nontarget ERPs followed by components exceeding the temporal window of the P300 wave. Electrical activity from 152 brain regions of 14 epileptic patients was recorded by means of depth electrodes. Average target and nontarget records from 1800 ms long EEG periods free of epileptic activity were compared. Late divergence preceded by almost identical course of the target and nontarget ERPs was found in 16 brain regions of 6 patients. The mean latency of the divergence point was 570+/-93 ms after the stimulus onset. The target post-divergence section of the ERP differed from the nontarget one by opposite polarity, different latency of the components, or even different number of the components. Generators of post-divergence ERP components were found in the parahippocampal gyrus, superior, middle and inferior temporal gyri, amygdala, and fronto-orbital cortex. Finding of late divergence indicates that functional differences exist even not sooner than during the final phase of the task. Different mental operations were expected in the late phase of intracerebral ERPs obtained in the visual oddball task with mental counting. Therefore we searched for late divergences of target and nontarget ERPs followed by components exceeding the temporal window of the P300 wave. Electrical activity from 152 brain regions of 14 epileptic patients was recorded by means of depth electrodes. Average target and nontarget records from 1800 ms long EEG periods free of epileptic activity were compared. Late divergence preceded by almost identical course of the target and nontarget ERPs was found in 16 brain regions of 6 patients. The mean latency of the divergence point was 570+/-93 ms after the stimulus onset. The target post-divergence section of the ERP differed from the nontarget one by opposite polarity, different latency of the components, or even different number of the components. Generators of post-divergence ERP components were found in the parahippocampal gyrus, superior, middle and inferior temporal gyri, amygdala, and fronto-orbital cortex. Finding of late divergence indicates that functional differences exist even not sooner than during the final phase of the task. (en)
Title	Late Divergence of Target and Nontarget ERPs in a Visual Oddball Task Late Divergence of Target and Nontarget ERPs in a Visual Oddball Task (en)
skos:prefLabel	Late Divergence of Target and Nontarget ERPs in a Visual Oddball Task Late Divergence of Target and Nontarget ERPs in a Visual Oddball Task (en)
skos:notation	RIV/68081731:_____/12:00385288!RIV13-AV0-68081731
http://linked.open...avai/predkladatel	Ústav přístrojové techniky AV ČR, v. v. i.
http://linked.open...avai/riv/aktivita	I P S Z
http://linked.open...avai/riv/aktivity	I, P(1M06039), P(ED1.1.00/02.0068), P(GAP103/11/0933), S, Z(MSM0021622404)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Chládek, Jan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav přístrojové techniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	146519
http://linked.open...ai/riv/idVysledku	RIV/68081731:_____/12:00385288
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Intracerebral recording; Oddball task; Visual evoked potentials; Mental counting; Memory (en)
http://linked.open.../riv/klicoveSlovo	Intracerebral recording Mental counting Oddball task Visual evoked potentials Memory
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[D2C0A1DFA3C8]
http://linked.open...i/riv/nazevZdroje	Physiological Research
http://linked.open...in/vavai/riv/obor	CE
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Central european institute of technology Analysis of EEG Signals Scanned at High Frequencies from Deep Brain Structures Centre for neuropsychiatric research of the traumatic stress
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	61
http://linked.open...iv/tvurceVysledku	Chládek, Jan Rektor, I. Brázdil, M. Damborská, A. Janoušová, E. Kukleta, M.
http://linked.open...ain/vavai/riv/wos	000306508000009
http://linked.open...n/vavai/riv/zamer	The Internal Organisation and Neurobiological Mechanisms of Functional CNS Systems under Normal and Pathological Conditions
issn	0862-8408
number of pages	12 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Late Divergence of Target and Nontarget ERPs in a Visual Oddball Task

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