Brain biological rhythms

One last sleep disorder that all of us experience (except those who don t travel) is actually a temporary maladaptation of the brain and body s biological rhythms. Jet lag occurs when we travel to a new time zone and our biological rhythms are slow to catch up and adjust to the new sunrise and sunset times. As mentioned in Chapter 1, our sleep and biological rhythms are intricately tied to the daily cycles of light and dark. 

Hypothalamus—A region in the brain that controls sleep and biological rhythms. 

Jet lag—A temporary maladaptation of the brain and body s biological rhythms when we travel to a new time zone. 

Potentized homeopathic medicines have preferential action on sides of the body some are more effective on one side than on the other. This differential effect of the medicines with respect to laterality can be traced to functional asymmetry of the human brain. The brain can asymmetrically modulate nurochemical, neuroendocrine and immune reactivity. Potentized drugs are very often selected on the basis of time modalities of symptoms of a disease. The time modalities of the drug action can be correlated with the internal clock or biological rhythms of organisms which are disturbed in diseased conditions. Melatonin, secreted in the brain, has marked influence on the circadian rhythms. 

Like all of our organs, the brain has evolved over millions of years. It gradually developed from the inside out. The oldest part is the brain stem. It controls basic biological rhythms such as breathing, heart beat, muscle function, and balance. The higher functions of the brain, though, have evolved in what American biologist Paul D. MacLean, M.D., called the triune brain, or three brains in one. They reside in a respectful but wary alliance with the other. 

Melatonin, a hormone secreted in the light-sensitive pineal gland in the vertebrate brain, is thought to function in the formation of biological rhythms (Campbell et al., 1999). Melatonin is... 

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