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2014 | 74 | 3 |

Tytuł artykułu

Post-stimulus gamma oscillations in the barrel system of awake rat

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Języki publikacji

EN

Abstrakty

EN
We investigated the dynamics of gamma oscillations in thalamo-cortical part of the rat vibrissa-barrel system. LFPs were recorded by multiwire arrays implanted chronically in the barrel cortex and somatosensory thalamus in non-anesthetized rats at two arousal levels: quiescence (induced by long lasting habituation process) and arousal (elicited by contextual aversive stimuli). As compared to quiescence, in an aroused state we observed enhancement of power in gamma frequency (45–90 Hz) band arranged in a specific temporal pattern: the high gamma (73–90 Hz) bursts appeared ca. 230 ms after stimulus onset and developed into the lower gamma (53–73 Hz) activity at ~300 ms after stimulus. The effect was observed in 7 out of 14 examined sessions (in four animals) in which novelty component was raised by the first introduction of new arousing stimuli. Research supported by the Polish National Science Centre grant N N401-533040

Słowa kluczowe

Wydawca

-

Rocznik

Tom

74

Numer

3

Opis fizyczny

p.340

Twórcy

autor
  • Department of Neurophysiology, Nencki Institute of Experimental Biology Polish Academy of Sciences, Warsaw, Poland
  • Department of Neurophysiology, Nencki Institute of Experimental Biology Polish Academy of Sciences, Warsaw, Poland
  • Department of Neurophysiology, Nencki Institute of Experimental Biology Polish Academy of Sciences, Warsaw, Poland
autor
  • Department of Neurophysiology, Nencki Institute of Experimental Biology Polish Academy of Sciences, Warsaw, Poland
autor
  • Department of Neurophysiology, Nencki Institute of Experimental Biology Polish Academy of Sciences, Warsaw, Poland

Bibliografia

Typ dokumentu

Bibliografia

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