Ventromedial prefrontal cortex damage alters resting blood flow to the bed nucleus of stria terminalis.

Ventromedial prefrontal cortex damage alters resting blood flow to the bed nucleus of stria terminalis.
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DOI:
10.1016/j.cortex.2014.11.013
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发表时间:
2015-03
期刊:
影响因子:
3.6
通讯作者:
Koenigs, Michael
Koenigs, Michael
中科院分区:
心理学2区
文献类型:
--
作者:
Motzkin, Julian C.;Philippi, Carissa L.;Oler, Jonathan A.;Kahn, Ned H.;Baskaya, Mustafa K.;Koenigs, Michael

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腹内侧前额叶皮层(vmPFC)在调节情绪反应中起着关键作用,但这种功能背后的确切神经机制尚不清楚。vmPFC与许多参与情感处理的皮层下结构相互作用,包括杏仁核、下丘脑、导水管周围灰质、腹侧纹状体和终纹床核(BNST)。虽然先前对非人类灵长类动物的研究表明,vmPFC损伤会减少BNST活动和焦虑行为,但在人类中没有这样的因果证据。在这项研究中,我们在局灶性双侧vmPFC损伤的神经外科患者中使用了一种新的MRI应用,以确定vmPFC是否确实是调节人类BNST功能的关键。相对于在vmPFC和BNST之间表现出强大的静息状态功能连接的神经健康受试者,vmPFC病变患者的右侧BNST静息状态灌注显著降低。在杏仁核、纹状体、下丘脑或导水管周围灰质中没有观察到这种灌注差异。因此,这项研究提供了vmPFC与BNST之间关系的独特数据,表明vmPFC有助于促进人类BNST的活动。这一发现与情绪和焦虑障碍的神经回路模型有关。
The ventromedial prefrontal cortex (vmPFC) plays a key role in modulating emotional responses, yet the precise neural mechanisms underlying this function remain unclear. vmPFC interacts with a number of subcortical structures involved in affective processing, including the amygdala, hypothalamus, periaqueductal gray, ventral striatum, and bed nucleus of stria terminalis (BNST). While a previous study of non-human primates shows that vmPFC lesions reduce BNST activity and anxious behavior, no such causal evidence exists in humans. In this study, we used a novel application of MRI in neurosurgical patients with focal, bilateral vmPFC damage to determine whether vmPFC is indeed critical for modulating BNST function in humans. Relative to neurologically healthy subjects, who exhibited robust rest-state functional connectivity between vmPFC and BNST, the vmPFC lesion patients had significantly lower resting-state perfusion of the right BNST. No such perfusion differences were observed for the amygdala, striatum, hypothalamus, or periaqueductal gray. This study thus provides unique data on the relationship between vmPFC and BNST, suggesting that vmPFC serves to promote BNST activity in humans. This finding is relevant for neural circuitry models of mood and anxiety disorders.
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