Effect of ethanol on the visual -evoked potential in rat: dynamics of ON and OFF responses

• Autorzy: Dulinskas R. , Buisas R. , Vengeliene V. , Ruksenas O.
• Języki publikacji: EN

Abstrakty

EN

The effect of acute ethanol administration on the flash visual‑evoked potential (VEP) was investigated in numerous studies. However, it is still unclear which brain structures are responsible for the differences observed in stimulus onset (ON) and offset (OFF) responses and how these responses are modulated by ethanol. The aim of our study was to investigate the pattern of ON and OFF responses in the visual system, measured as amplitude and latency of each VEP component following acute administration of ethanol. VEPs were recorded at the onset and offset of a 500 ms visual stimulus in anesthetized male Wistar rats. The effect of alcohol on VEP latency and amplitude was measured for one hour after injection of 2 g/kg ethanol dose. Three VEP components – N63, P89 and N143 – were analyzed. Our results showed that, except for component N143, ethanol increased the latency of both ON and OFF responses in a similar manner. The latency of N143 during OFF response was not affected by ethanol but its amplitude was reduced. Our study demonstrated that the activation of the visual system during the ON response to a 500 ms visual stimulus is qualitatively different from that during the OFF response. Ethanol interfered with processing of the stimulus duration at the level of the visual cortex and reduced the activation of cortical regions.

• Wydawca: -
• Czasopismo: Acta Neurobiologiae Experimentalis
• Rocznik: 2017
• Tom: 77
• Numer: 2
• Opis fizyczny: p.190-197,fig.,ref.

Twórcy

autor

Dulinskas R.

• Institute of Biosciences, Vilnius University, Vilnius, Lithuania

autor

Buisas R.

• Institute of Biosciences, Vilnius University, Vilnius, Lithuania

autor

Vengeliene V.

• Institute of Biosciences, Vilnius University, Vilnius, Lithuania

autor

Ruksenas O.

• Institute of Biosciences, Vilnius University, Vilnius, Lithuania

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