Analgesia for tonic pain by self-administered lateral hypothalamic stimulation

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Abstract
The present study was designed to determine if analgesia for tonic pain could be induced with self-administered lateral hypothalamic (LH) stimulation. The majority of studies of LH stimulation employed behaviorally non-contingent stimulation. According to some investigators behaviorally non-contingent LH stimulation might be aversive and consequently yield stress-induced analgesia rather than a primary analgesic effect. Other investigators have reported that non-contingent LH stimulation can be rewarding. Our findings indicate that LH analgesia for tonic pain can be obtained with self-administered LH stimulation. These findings indicate that the analgesia we have obtained in previous work is a primary effect and not dependent on stress induced by behaviorally non-contingent LH stimulation.

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