作者mulkcs (mulkcs)
看板Cognitive
标题[新知] 静坐造成不同default mode
时间Thu Dec 8 12:32:41 2011
Meditation experience is associated with differences in default mode network
activity and connectivity
Many philosophical and contemplative traditions teach that “living in the
moment” increases happiness. However, the default mode of humans appears to
be that of mind-wandering, which correlates with unhappiness, and with
activation in a network of brain areas associated with self-referential
processing. We investigated brain activity in experienced meditators and
matched meditation-naive controls as they performed several different
meditations (Concentration, Loving-Kindness, Choiceless Awareness). We found
that the main nodes of the default-mode network (medial prefrontal and
posterior cingulate cortices) were relatively deactivated in experienced
meditators across all meditation types. Furthermore, functional connectivity
analysis revealed stronger coupling in experienced meditators between the
posterior cingulate, dorsal anterior cingulate, and dorsolateral prefrontal
cortices (regions previously implicated in self-monitoring and cognitive
control), both at baseline and during meditation. Our findings demonstrate
differences in the default-mode network that are consistent with decreased
mind-wandering. As such, these provide a unique understanding of possible
neural mechanisms of meditation.
网址:
http://www.pnas.org/content/early/2011/11/22/1112029108.abstract
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大意是说 静坐者的default mode network会和比一般人低
但PCC和task-related区域的functional connectivity (如 Dorsal ACC, DLPFC)
确会有比较强的反应
这和传统对DMN和task related region的看法有所不同
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