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Warming up for sleep? - ground squirrels sleep during arousals from hibernation

Daan, S., Barnes, B. M. & Strijkstra, A. M., 22-Jul-1991, In : Neuroscience Letters. 128, 2, p. 265-268 4 p.

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  • Warming up for sleep? — Ground squirrels sleep during arousals from hibernation

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DOI

  • Serge Daan
  • Brian M. Barnes
  • Arjen M. Strijkstra

Hypothermia during mammalian hibernation is periodically interrupted by arousals to euthermy, the function of which is unknown. We report that arctic ground squirrels (Spermophilus parryii) consistently sleep during these arousals, and that their EEG shows the decrease in slow wave activity (delta-power) that is characteristic of a declining requirement for sleep. These results are consistent with the novel hypothesis that the need for sleep slowly accumulates during torpor, and that returning to euthermy is periodically required to allow sleep. Sleep thus seems to be energetically expensive for a hibernating mammal, and cannot be considered solely a strategy for saving energy.

Original languageEnglish
Pages (from-to)265-268
Number of pages4
JournalNeuroscience Letters
Volume128
Issue number2
Publication statusPublished - 22-Jul-1991

    Keywords

  • SLEEP, HIBERNATION, TORPOR, GROUND SQUIRREL, PERIODIC AROUSAL, EEG POWER DENSITY, SPERMOPHILUS-LATERALIS

ID: 6292396