Search results
Results From The WOW.Com Content Network
Different tasks and mental processes involve different brain areas, but almost all parts of the brain have a known function. Brain Function: Research has demonstrated that various brain regions are involved in sensory processing, motor control, language, memory, and higher cognitive functions.
As LiveScience pointed out back in 2010, brain scans have shown people use all of their brain, though it is true we don't use all of it at the same time. But years of studies like that don't seem ...
Nerve action potential. Neurons function in the central nervous system by generating signals from synapses, and this only works in the proper chemical environment. [4] An electrical signal is mediated by the sodium channels and leaky potassium channels in which intracellular K + ion concentration is higher than its corresponding extracellular concentration, whereas extracellular concentrations ...
This is critical for brain function, since the brain utilizes glucose as an energy source under most conditions. [34] The simultaneously phosphorylation of, particularly, phosphofructokinase , but also, to a certain extent pyruvate kinase, prevents glycolysis occurring at the same time as gluconeogenesis and glycogenolysis.
The brain typically gets most of its energy from oxygen-dependent metabolism of glucose (i.e., blood sugar), [85] but ketones provide a major alternative source, together with contributions from medium chain fatty acids (caprylic and heptanoic acids), [90] [91] lactate, [92] acetate, [93] and possibly amino acids.
Creatine is sometimes reported to have a beneficial effect on brain function and cognitive processing, although the evidence is difficult to interpret systematically and the appropriate dosing is unknown. [51] [52] The greatest effect appears to be in individuals who are stressed (due, for instance, to sleep deprivation) or cognitively impaired.
Brains from mammals taken as food are also a good direct source. Beef brain, for example, contains approximately 855 mg of DHA per 100 grams in a serving. [38] While DHA may be the primary fatty acid found in certain specialized tissues, these tissues, aside from the brain, are typically small in size, such as the seminiferous tubules and the ...
In areas with reduced activity, the brain restores its supply of adenosine triphosphate (ATP), the molecule used for short-term storage and transport of energy. [10] (Since in quiet waking the brain is responsible for 20% of the body's energy use, this reduction has an independently noticeable impact on overall energy consumption.) [11] During ...