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Furthermore, depletion or inhibition of dopamine in neurons of the nucleus accumbens decreases appetitive but not consummatory behavior.Dopamine is further implicated in motivation as administration of amphetamine increased the break point in a progressive ratio self-reinforcement schedule.Intrinsic motivation has been studied since the early 1970s.Intrinsic motivation is the self-desire to seek out new things and new challenges, to analyze one's capacity, to observe and to gain knowledge.Most psychological theories hold that motivation exists purely within the individual, but socio-cultural theories express motivation as an outcome of participation in actions and activities within the cultural context of social groups.The idea that human beings are rational and human behavior is guided by reason is an old one. I coined the name Push-Dose Pressors (PDPs) way back on episode 6.
Motivation as a desire to perform an action is usually defined as having two parts, directional such as directed towards a positive stimulus or away from a negative one, as well as the activated "seeking phase" and consummatory "liking phase".
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