Correlations Between Paradoxical Sleep and Shuttle-Box Conditioning in Rats

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    Abstract

    Eighteen male Wistar rats were given one daily two-way active avoidance conditioning session followed immediately by 5 hr of sleep recording, for 5 consecutive days. The group of rats that achieved 80% or greater avoidance in some of the 5 training sessions showed significant linear increases of paradoxical sleep (PS), compared with baseline levels, thoughout the successive conditioning sessions. Furthermore, (a) the group of rats showing PS increases (more than 1SD above baseline) after some of the training sessions achieved a significantly higher final number of avoidances than the remaining animals; (b) a high and positive correlation was observed between avoidance increases in the 3rd conditioning session and previous PS; and (c) maximum increases in correct performance often occurred following high PS increases. It is concluded that PS increases facilitate the consolidation of learning.
    Original languageEnglish
    Pages (from-to)984-990
    JournalBehavioral Neuroscience
    Volume103
    Issue number5
    DOIs
    Publication statusPublished - 1 Oct 1989

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