Baseline transition sleep and associated sleep episodes are related to the learning ability of rats

Physiology & Behavior
Stefania VesciaA Giuditta

Abstract

The EEGs of 18 adult male Wistar rats were recorded during a baseline session lasting 7 h (day 1). The following day, rats were trained for a 2-way active avoidance task in an automated shuttle-box. A retention test was scheduled on the third day. On the basis of the number of avoidances scored during the training and retention sessions, rats were assigned to a fast-learning group (FL; achieving criterion during the training session), a slow-learning group (SL; achieving criterion in the retention test session), and a nonlearning group (NL; failing to achieve criterion). Vigilance states were determined by analyzing EEG data in 5-s epochs and calculating EEG power spectra of consecutive time intervals as short as 1 s. This high-resolution method led to the identification of transition sleep episodes that followed slow-wave sleep (SS) and were followed by waking (TS-->W) or by paradoxical sleep (TS-->PS). Comparison of the baseline sleep variables of the 3 behavioral groups revealed the presence of several significant differences. These observations were confirmed by the results of correlative analyses between baseline sleep variables and number of avoidances scored during the training and retention sessions. The most reliable i...Continue Reading

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Citations

Dec 1, 1996·Physiology & Behavior·P MandileA Onio Giuditta
Oct 1, 1997·Physiology & Behavior·M V AmbrosiniA Giuditta
Feb 13, 2001·Behavioural Brain Research·S PiscopoS Vescia
Feb 15, 2001·Behavioural Brain Research·S PiscopoS Vescia
Apr 10, 2003·Progress in Neurobiology·Joel H Benington, Marcos G Frank
May 24, 2003·Brain Research. Cognitive Brain Research·Paola MandileStefania Vescia
Oct 21, 2015·Neurobiology of Learning and Memory·Stuart M FogelAdrian M Owen
Jan 18, 2003·Sleep Medicine Reviews·M V. Ambrosini, A Giuditta
Jan 8, 2015·Frontiers in Systems Neuroscience·Antonio Giuditta
Apr 17, 2013·Physiological Reviews·Björn Rasch, Jan Born

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