Abstract：
:In previous studies based on high resolution EEG analyses of the 7 h baseline session of 18 adult male Wistar rats [6,14], we have identified four sleep sequences initiating with slow wave sleep (SS) and terminating with waking (W) or paradoxical sleep (PS). Two of these sequences contained an intervening episode of transition sleep (TS). Several variables of these sequences (SS-->W, SS-->TS-->W, SS-->TS-->PS, and SS-->PS) were selectively correlated with the capacity of rats to learn a two-way active avoidance task the following day, and were differently distributed in fast learning, slow learning and non learning rats [21]. The temporal organization of different sleep components in sequences suggested that a comparable temporal organization might concern the different sleep sequences, albeit on a longer time scale. We have now used waking periods longer than 60 s to separate clusters of baseline sleep sequences (trains) in the same rats. Trains containing the same sleep sequence (homogeneous trains) have been distinguished from trains containing different sleep sequences (mixed trains). In addition, mixed trains including the SS-->TS-->W sequence (+TSW trains) have been separated from mixed trains lacking that sequence (-TSW trains). Mixed trains of the +TSW type were longest and most numerous, while homogeneous trains were shortest and least abundant. Mixed trains of the -TSW type displayed intermediate values. Several variables of sleep sequences and sleep components differed within mixed trains and among mixed and homogeneous trains. The data indicate that baseline sleep sequences aggregate in relatively long strings in a non random fashion. The mechanism of this association is discussed.
journal_name
Behav Brain Resjournal_title
Behavioural brain researchauthors
Piscopo S,Mandile P,Montagnese P,Cotugno M,Giuditta A,Vescia Sdoi
10.1016/s0166-4328(00)00339-9subject
Has Abstractpub_date
2001-02-15 00:00:00pages
93-101issue
1eissn
0166-4328issn
1872-7549pii
S0166-4328(00)00339-9journal_volume
119pub_type
杂志文章abstract：:Oxytocin is an important messenger in the brain that has been linked to a variety of social functions in pharmacological studies. Besides, functional genetic variations on the oxytocin receptor gene have been repeatedly associated with social processing and functioning. Despite this knowledge, there are very few studi...
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journal_title：Behavioural brain research
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abstract：:C57BL/6 (C57) and DBA/2 (DBA) inbred mice with posterior parietal cortex or sham lesions were tested in a radial eight-arm maze task with all the paths baited. In the high learner C57 strain, parietal lesions produced a limited impairment of performance without affecting maze-running strategies while the same lesions ...
journal_title：Behavioural brain research
pub_type： 杂志文章
doi：10.1016/s0166-4328(97)00213-1
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