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Titolo:
CORTICAL AND THALAMIC VISUAL-EVOKED POTENTIALS DURING SLEEP-WAKE STATES AND SPIKE-WAVE DISCHARGES IN THE RAT
Autore:
MEEREN HKM; VANLUIJTELAAR ELJM; COENEN AML;
Indirizzi:
UNIV NIJMEGEN,NIJMEGEN INST COGNIT RES & INFORMAT TECHNOL,DEPT COMPARAT & PHYSIOL PSYCHOL NL-6500 HE NIJMEGEN NETHERLANDS
Titolo Testata:
Electroencephalography and clinical neurophysiology. Evoked potentials
fascicolo: 3, volume: 108, anno: 1998,
pagine: 306 - 319
SICI:
0168-5597(1998)108:3<306:CATVPD>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
ABSENCE EPILEPSY; STRAIN; SEIZURES; NUCLEUS; NEURONS; SYSTEM; CORTEX; LEVEL;
Keywords:
VISUAL EVOKED POTENTIALS; PRIMARY VISUAL CORTEX; LATERAL GENICULATE NUCLEUS; SLEEP-WAKE STATES; SPIKE-WAVE DISCHARGES; WAG/RIJ RAT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
38
Recensione:
Indirizzi per estratti:
Citazione:
H.K.M. Meeren et al., "CORTICAL AND THALAMIC VISUAL-EVOKED POTENTIALS DURING SLEEP-WAKE STATES AND SPIKE-WAVE DISCHARGES IN THE RAT", Electroencephalography and clinical neurophysiology. Evoked potentials, 108(3), 1998, pp. 306-319

Abstract

Flash visual evoked potentials (VEP) were simultaneously recorded from the primary visual cortex and the dorsal lateral geniculate nucleus in freely-moving WAG/Rij rats, to investigate whether the thalamic VEPshows the same state-dependent alterations as the cortical VEP. VEPs obtained during active and passive wakefulness (AW and PW), slow-wave sleep (SWS). REM sleep and during the occurrence of spike-wave discharges (SWD), a specific trait of the genetically epileptic WAG/Rij rat, were compared. The general architecture of the thalamic VEP resembles the cortical VEP, although its polarity is reversed. This facilitated the interpretation of components in terms of underlying neuronal events. The primary excitation peak is differently modulated in cortex and thalamus. Whereas the thalamic component (P30) is not affected by brain-state, the cortical component (N1) shows a strong increase in latency during SWS and SWD. In contrast, the modulation of later components is highly similar for cortex and thalamus. VEPs obtained during AW andREM resemble each other. During SWS and SWD there is a considerable, and during PW a moderate, enlargement of primarily inhibitory components. After-discharges are enhanced during SWS, SWD and REM. No evidenceis found for a major impairment of sensory transmission during SWD. (C) 1998 Elsevier Science Ireland Ltd.

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Documento generato il 24/09/20 alle ore 23:28:47