Dopamine receptors behavioral state

Finally two reactions of technetium complexes which show clean first-order kinetics, despite ill-defined structures and unknown oxidation states. The first involves the dissociation or solvolysis of the technetium-spiperone dithiocarbamate complex (spiperone, (24), is involved in brain dopamine receptor behavior)/ ... 

Emotional effects Morphine creates a pleasant, euphoric state, which is an aspect of the behaviorally reinforcing effect. The subjective state produced by opioids is often described as ecstatic and is compared to a sexual experience. These effects are most likely mediated by iJ and possibly 5 receptors, and interactions with the mesolimbic dopamine system (Shippenberg et al. 1993 Di Chiara and North 1992 Wise 1989). In contrast, x opioids have dysphoric and psychotomimetic effects (Kumor et al. 1986). 

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