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Showing 1 to 1 of 1 for “"Morphine injected"”.
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Shuttlebox Self-Stimulation Behavior Following Intracerebral Microinjections of Morphine Into the Ventral Tegmental-Substantia.
Systemic analgesic injections of morphine have been shown to increase the rate at which rats will lever-press for electrical brain stimulation as well as decrease the current intensity required for this self-stimulation. In the shuttlebox paradigm, the animal crosses from one side of the case to …