Threshold differences for naloxone and n
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Gerald J. Schaefer; Richard P. Michael
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Article
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1981
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Springer
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English
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Rats were implanted with stimulating electrodes aimed either at the medial forebrain bundle-lateral hypothalamus (MFB-LH) or the midbrain-central gray (MID-GG), and were trained to lever-press for brain selfstimulation on a fixed ratio: 15 schedule of reinforcement. The dose-dependent effects of mor