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  • Title: Effects of centrifugal rotation on analgesia and conditioned flavor aversions.
    Author: Green KF, Lee DW.
    Journal: Physiol Behav; 1987; 40(2):201-5. PubMed ID: 3628529.
    Abstract:
    In the first experiment, 48 female Wistar rats were water deprived and given three conditioning days with saccharin-flavored water (1.5 g/liter) followed by 0, 5, 10 or 15 min of centrifugal rotation (150 rpm). Analgesia was measured by the tail flick test immediately after rotation. Over conditioning days, taste aversions developed. In general, taste aversion strength increased with duration of rotation. Analgesia also was in proportion to duration of rotation; however, over days tolerance developed in all rotated groups. In the second experiment 12 female Wistar rats were water deprived and given naloxone (20 mg/kg) or saline prior to 15 min of rotation. Rotation-induced analgesia was not affected by naloxone. It was concluded that somatic and gastrointestinal reactions to rotation are not served by a single mechanism.
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