&gt;doesn&#x27;t necessarily stimulate any sort of direct pleasurable feeling as people often infer.<p>Dopamine is very complex and acts on different receptors to achieve varying effects, but a sudden spike in dopamine concentration in many parts of the brain, like the nucleus accumbens, will usually result in a pleasurable feeling. This can be seen in people with dopamine-related disorders, like bipolar, and dopamine-releasing substances like amphetamine.