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

• Autorzy: Paluch K. , Sobolewski A. , Swiejkowski D. , Wrobel A. , Kublik E.
• 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

• Wydawca: -
• Czasopismo: Acta Neurobiologiae Experimentalis
• Rocznik: 2014
• Tom: 74
• Numer: 3
• Opis fizyczny: p.340

Twórcy

autor

Paluch K.

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

autor

Sobolewski A.

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

autor

Swiejkowski D.

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

autor

Wrobel A.

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

autor

Kublik E.

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