Science consists in grouping facts so that general laws or conclusions may be drawn from them. —Charles Darwin Sleep is a complex state controlled by a number of different brain chemicals. In aged individuals, these brain chemicals may not be made in as great a quantity as in youth. Brain cells may become less sensitive […]
Although male pattern balding isnot necessarily tied to old age, it is very definitely due to a clock. If you transplant hairs from the balding area onto another part of the head, these hairs fall out right on schedule with the others remaining in the balding area. If you transplant hairs from nonbalding areas to […]
Catecholamines are responsible for a number of different effects in normal humans. They are involved in control of locomotor (moving about) behavior, aggressive behavior, sexual behavior, food intake, and behavior dependent upon positive (reward) and negative (punishment) reinforcement. Acetylcholine controls muscle tone and motor activity and has a role in memory, learning, and long-term planning, […]
Read more The Decline of Your Brain’s Chemical Messengers III