Brain glucose level, blood oxygen level, and other parameters. These hypothalamic nuclei send output signals to motor areas that can generate actions to rectify deficiencies. Some of the outputs also go to the pituitary gland, a tiny gland attached to the brain directly underneath the hypothalamus. The pituitary gland secretes hormones into the bloodstream, where they circulate throughout the body and induce changes in cellular activity. The individual animals need to express survival-promoting behaviors, such as seeking food, water, shelter, and a mate. The motivational system in the brain monitors the current state of satisfaction of these goals, and activates behaviors
The Brain of Colonel Barham on Mars. But the best candidate for the job, Col. Barham, is dying of an incurable ailment. It is decided to separate his brain from his body and keep it alive, with neural implants connecting it to visual and audio input/output for the mission. But without a body, the brain becomes extremely powerful and megalomaniacal. "Progress goes on. One experiment fails, but even out of failure valuable lessons are learned. A way will be found, someday, somehow. It always is." The Brain of Colonel Barham "The Brain of Colonel Barham" (original title: The Brain of Donald Duncan) is an episode