Summary
Golden-mantled ground squirrels (Citellus lateralis) displayed virtually continuous electrophysiological states of sleep when hibernating at moderate ambient temperatures (22°C). Rapid-eye-movement sleep progressively diminished with the fall in body temperature so that at a body temperature of 23°C it was completely absent. At this temperature hibernation was characterized by slow wave sleep isomorphic with slow wave sleep episodes at non-hibernating (euthermic) body temperatures.
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Supported by National Institute of Health grants GM 23694 awarded to R.J. Berger and GM 23695 awarded to H.C. Heller.
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Walker, J.M., Haskell, E.H., Berger, R.J. et al. Hibernation at moderate temperatures: a continuation of slow wave sleep. Experientia 37, 726–728 (1981). https://doi.org/10.1007/BF01967947
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DOI: https://doi.org/10.1007/BF01967947