Hypothalamus and Pleasure

Electrical stimulation of certain hypothalamic areas induces pleasure.
Olds and Milner (1954) demonstrated rats would self-stimulate the hypothalamus repeatedly for pleasure, even to exhaustion.
Experiments showed rats pressing a bar over 2,000 times an hour for hypothalamic stimulation.
The hypothalamus is confirmed to be involved in pleasurable feelings.
Other brain regions, including the limbic system and forebrain fibers, also contribute to the brain's pleasure circuits.