title: Interhemispheric asymmetry of human sleep EEG in response to selective slow-wave sleep deprivation.
abstract: Recent evidence suggests that the human sleep electroencephalogram (EEG) shows regional differences over both the sagittal and coronal planes. In the present study, in a group of 10 right-handers, the authors investigated the presence of hemispheric asymmetries in the homeostatic regulation of human sleep EEG power during and after selective slow-wave sleep (SWS) deprivation. The SWS deprivation was slightly more effective over the right hemisphere, but the left hemisphere showed a markedly larger increase of EEG power in the 1.00-24.75 Hz range during recovery-night non-REM sleep, and a larger increase of EEG power during both deprivation-night and recovery-night REM sleep. These results support the greater need for sleep recuperative processes of the left hemisphere, suggesting that local sleep regulation processes may also act during REM sleep.
authors.affiliation: Dipartimento di Psicologia, Università degli Studi di Roma La Sapienza, Italy. michele.ferrara@uniroma1.it
authors.forename: Michele
authors.initials: M
authors.lastname: Ferrara
authors.forename: Luigi
authors.initials: L
authors.lastname: De Gennaro
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Curcio
authors.forename: Riccardo
authors.initials: R
authors.lastname: Cristiani
authors.forename: Mario
authors.initials: M
authors.lastname: Bertini
mesh_terms: D000328:Adult; D004569:Electroencephalography; D007839:Functional Laterality; D006801:Humans; D008297:Male; D012890:Sleep / Q000502:physiology*; D012892:Sleep Deprivation / Q000473:pathology*