In unanaesthetized, undrugged, normally respiring cats extracellular recordings were obtained from ventroposterolateral thalamic units through different states of the sleep-waking cycle. An air-puff peripheral stimulation was used to activate the recorded neurones. State-dependent changes of the response of thalamic neurones were shown, comparing slow-wave sleep (SWS) to wakefulness (W). During SWS an increase was observed in the strength of the discharge suppression, which follows the excitatory peak in the typical response pattern. Also the cell excitability is further reduced in slow-wave sleep during the 150-200 ms period following an excitatory response, suggesting that an enhancement of the post-excitatory inhibition could be involved in the generation of the slow 5-6 Hz rhythms, observed during thalamic and cortical synchronization.
|Titolo:||Responses of VPL thalamic neurones to peripheral stimulation in wakefulness and sleep|
|Parole Chiave:||Cat; discharge suppression; slow-wave sleep; synchronization; ventralis posterolateralis thalamus|
|Settore Scientifico Disciplinare:||Settore BIO/09 - Fisiologia|
|Data di pubblicazione:||17-lug-1989|
|Digital Object Identifier (DOI):||10.1016/0304-3940(89)90309-1|
|Appare nelle tipologie:||01 - Articolo su periodico|