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
中科院分区:
文献类型:
--
作者:
Stegmayer K;Usher J;Trost S;Henseler I;Tost H;Rietschel M;Falkai P;Gruber O
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.
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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
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
影响因子:
5.7
作者:
O. Gruber;D. Y. Cramon
通讯作者:
D. Y. Cramon
影响因子:
4.2
作者:
Banks, Sarah J.;Eddy, Kamryn T.;Phan, K. Luan
通讯作者:
Phan, K. Luan