2013
Hippocampal negative event-related potential recorded in humans during a simple sensorimotor task occurs independently of motor execution
ROMAN, Robert, Milan BRÁZDIL, Jan CHLÁDEK, Ivan REKTOR, Pavel JURÁK et. al.Základní údaje
Originální název
Hippocampal negative event-related potential recorded in humans during a simple sensorimotor task occurs independently of motor execution
Autoři
ROMAN, Robert (203 Česká republika, domácí), Milan BRÁZDIL (203 Česká republika, garant, domácí), Jan CHLÁDEK (203 Česká republika, domácí), Ivan REKTOR (203 Česká republika, domácí), Pavel JURÁK (203 Česká republika), Miroslav SVĚTLÁK (203 Česká republika, domácí), Alena DAMBORSKÁ (203 Česká republika, domácí), Daniel Joel SHAW (826 Velká Británie a Severní Irsko, domácí) a Miloslav KUKLETA (203 Česká republika, domácí)
Vydání
Hippocampus, Hoboken, USA, WILEY-BLACKWELL, 2013, 1050-9631
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30000 3. Medical and Health Sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.302
Kód RIV
RIV/00216224:14740/13:00066278
Organizační jednotka
Středoevropský technologický institut
UT WoS
000327157200019
Klíčová slova anglicky
intracranial recordings; auditory task; hippocampus; ERP latency; motor response
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 31. 1. 2014 09:24, Olga Křížová
Anotace
V originále
A hippocampal prominent event-related potential (ERP) with a peak latency at around 450 ms is consistently observed as a correlate of hippocampal activity during various cognitive tasks. Some intracranial EEG studies demonstrated that the amplitude of this hippocampal potential was greater in response to stimuli requiring an overt motor response, in comparison with stimuli for which no motor response is required. These findings could indicate that hippocampal evoked activity is related to movement execution as well as stimulus evaluation and associated memory processes. The aim of the present study was to investigate the temporal relationship between the hippocampal negative potential latency and motor responses. We analyzed ERPs recorded with 22 depth electrodes implanted into the hippocampi of 11 epileptic patients. Subjects were instructed to press a button after the presentation of a tone. All investigated hippocampi generated a prominent negative ERP peaking at approximately 420 ms. In 16 from 22 cases we found that the ERP latency did not correlate with the reaction time; in different subjects, this potential could either precede or follow the motor response. Our results indicate that the hippocampal negative ERP occurs independently of motor execution. We suggest that hippocampal evoked activity, recorded in a simple sensorimotor task, is related to the evaluation of stimulus meaning within the context of situation.
Návaznosti
ED1.1.00/02.0068, projekt VaV |
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GAP103/11/0933, projekt VaV |
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MSM0021622404, záměr |
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