Electrical hypothalamic stimulation in rats induces hyperthermia if and only if they learn to self-stimulate
Handling and exposure to a novel environment has been shown to produce an emotional fever in rats. Electrical stimulation of lateral hypothalamus sites produced a rise of intracranial temperature not different from this emotional fever. Once the rats learned to self-stimulate, the same electrical st...
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Veröffentlicht in: | Physiology & behavior 1990-04, Vol.47 (4), p.635-639 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Handling and exposure to a novel environment has been shown to produce an emotional fever in rats. Electrical stimulation of lateral hypothalamus sites produced a rise of intracranial temperature not different from this emotional fever. Once the rats learned to self-stimulate, the same electrical stimulation produced a rise of the intracranial temperature significantly higher than the emotional fever. During the autoshaping for self-stimulation a significant relationship was found between the rise of the intracranial temperature and time expressed as successive days of self-stimulation training, or between the rise of intracranial temperature and the increasing frequency of operant responses. This seems to indicate that when the rats learned to self-stimulate, an initially nonsense signal, without specific thermal effect, was transformed into a neural or neurochemical code producing a new or modified effect which was a significantly higher fever. |
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ISSN: | 0031-9384 1873-507X |
DOI: | 10.1016/0031-9384(90)90070-K |