Disturbed cortico–amygdalar functional connectivity as pathophysiological correlate of working memory deficits in bipolar affective disorder

Disturbed cortico–amygdalar functional connectivity as pathophysiological correlate of working memory deficits in bipolar affective disorder
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皮质杏仁核功能连接紊乱与双相情感障碍工作记忆缺陷的病理生理相关性

DOI:
10.1007/s00406-014-0517-5
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发表时间:
2015
影响因子:
4.7
通讯作者:
Gruber O
Gruber O
中科院分区:
医学2区
文献类型:
--
作者:
Stegmayer K;Usher J;Trost S;Henseler I;Tost H;Rietschel M;Falkai P;Gruber O

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患有双相情感障碍的患者表现出工作记忆功能的缺陷。在先前的功能性磁共振成像研究中,我们观察到双相情感障碍患者在言语工作记忆的发音复述过程中杏仁核异常活跃。在本研究中,我们调查了双相情感障碍患者和健康对照者的右侧杏仁核和言语工作记忆的大脑系统之间的动态神经功能相互作用。总共有18名心境正常的双相情感障碍患者和18名健康对照者进行了修改后的斯滕贝格项目识别(工作记忆)任务。我们使用心理生理学的相互作用的方法,以评估功能之间的连接右侧杏仁核和大脑区域参与言语工作记忆。在健康受试者中,我们发现右侧杏仁核和涉及言语工作记忆的多个皮层脑区之间存在显著的负功能相互作用。与健康对照受试者相比,双相情感障碍患者的右杏仁核功能相互作用显着减少,特别是与右半球的功能相互作用,即,支持文字工作记忆的同侧皮层区域。与我们以前的研究结果杏仁核过度活跃的双相情感障碍患者在口头排练,目前的研究结果表明,一个不安的右半球的杏仁核和大脑皮层区域的工作记忆之间的“认知-情感”的相互作用可能是负责杏仁核过度激活,并影响口头工作记忆(赤字)在双相情感障碍患者。
Patients suffering from bipolar affective disorder show deficits in working memory functions. In a previous functional magnetic resonance imaging study, we observed an abnormal hyperactivity of the amygdala in bipolar patients during articulatory rehearsal in verbal working memory. In the present study, we investigated the dynamic neurofunctional interactions between the right amygdala and the brain systems that underlie verbal working memory in both bipolar patients and healthy controls. In total, 18 euthymic bipolar patients and 18 healthy controls performed a modified version of the Sternberg item-recognition (working memory) task. We used the psychophysiological interaction approach in order to assess functional connectivity between the right amygdala and the brain regions involved in verbal working memory. In healthy subjects, we found significant negative functional interactions between the right amygdala and multiple cortical brain areas involved in verbal working memory. In comparison with the healthy control subjects, bipolar patients exhibited significantly reduced functional interactions of the right amygdala particularly with the right-hemispheric, i.e., ipsilateral, cortical regions supporting verbal working memory. Together with our previous finding of amygdala hyperactivity in bipolar patients during verbal rehearsal, the present results suggest that a disturbed right-hemispheric “cognitive–emotional” interaction between the amygdala and cortical brain regions underlying working memory may be responsible for amygdala hyperactivation and affects verbal working memory (deficits) in bipolar patients.
DOI: 10.1176/appi.ajp.2010.09081235
发表时间: 2010-11
期刊: The American journal of psychiatry
影响因子: --
作者:
Moses-Kolko EL;Perlman SB;Wisner KL;James J;Saul AT;Phillips ML
通讯作者: Phillips ML
DOI: 10.1001/archpsyc.60.6.601
发表时间: 2003-06-01
影响因子: --
作者:
Blumberg, HP;Leung, HC;Peterson, BS
通讯作者: Peterson, BS
DOI: --
发表时间: 1990-11
期刊: --
影响因子: --
作者:
M. Gabriel;JOHN W. Moore
通讯作者: M. Gabriel;JOHN W. Moore
重新审视人类工作记忆的功能神经解剖学 使用经典领域特定干扰任务的 3-T fMRI 研究证据
DOI: --
发表时间: 2003
期刊: NeuroImage
影响因子: 5.7
作者:
O. Gruber;D. Y. Cramon
通讯作者: D. Y. Cramon
DOI: 10.1093/scan/nsm029
发表时间: 2007-12-01
影响因子: 4.2
作者:
Banks, Sarah J.;Eddy, Kamryn T.;Phan, K. Luan
通讯作者: Phan, K. Luan