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dorsolateral prefrontal cortex : ウィキペディア英語版
dorsolateral prefrontal cortex

The dorsolateral prefrontal cortex (DLPFC or DL-PFC) is an area in the prefrontal cortex of the brain of humans and primates. It is one of the most recently evolved parts of the human brain, that undergoes an extremely prolonged period of maturation that lasts until adulthood. DLPFC is not an anatomical structure, but rather a functional one. This region lies in the middle frontal gyrus of humans (i.e., lateral part of Brodmann's area (BA) 9 and 46〔Brodmann, 1909〕 and in macaque monkeys, this region is around the principal sulcus (i.e., in Walker's area 46〔Walker, 1940〕 ). Other sources consider that DLPFC is attributed anatomically to BA 9 and 46 and BA 8, 9 and 10.〔

DLPFC is connected to the orbitofrontal cortex, and to a variety of brain areas, which include the thalamus, parts of the basal ganglia (specifically, the dorsal caudate nucleus), the hippocampus, and primary and secondary association areas of neocortex, including posterior temporal, parietal, and occipital areas. Also, DLPFC is the end point for the dorsal pathway (stream) that tells the brain how to interact with the stimuli. On the other hand, the ventrolateral prefrontal cortex (located more inferior/ventral to DLPFC) is the end point of the ventral pathway (stream) that brings information about the stimuli’s characteristics.

An important function of the DLPFC is the executive functions, such as working memory, cognitive flexibility, planning, inhibition, and abstract
reasoning.〔 However, DLPFC is not exclusively responsible for the executive functions. All complex mental activity requires the additional cortical and subcortical circuits with which the DLPFC is connected. The DLPFC is also the highest cortical area that is involved in motor planning, organization and regulation.〔
==Structure==
As DLPFC is composed of spatial selective neurons, it has a neural circuitry that encompasses the entire range of sub-functions necessary to carry out an integrated response such as: sensory input, retention in short-term memory, and motor signaling. Historically dorsolateral prefrontal cortex was defined by its connection to: superior temporal cortex, posterior parietal cortex, anterior and posterior cingulate, premotor cortex, retrosplenial cortex, and neocerebellum,〔 as these connections allow DLPFC to regulate the activity of those regions and as well receive information from, and be regulated by those regions.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「dorsolateral prefrontal cortex」の詳細全文を読む



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