Experimental analysis of the DST and pituitary-dependent opiate analgesia in the learned helplessness paradigm

The involvement of endogenous opiate sys

The involvement of endogenous opiate systems in learned helplessness and stress-induced analgesia

✍ R. B. Hemingway; T. G. Reigle 📂 Article 📅 1987 🏛 Springer 🌐 English ⚖ 567 KB

The participation of endogenous opiate systems in the induction and expression of learned helplessness (LH) and stress-induced analgesia (SIA) was investigated in rats exposed to escapable and inescapable footshock. Following an initial footshock, analgesia was observed only in those animals that co