Acute left prefrontal transcranial magnetic stimulation in depressed patients is associated with immediately increased activity in prefrontal cortical as well as subcortical regions.

Acute left prefrontal transcranial magnetic stimulation in depressed patients is associated with immediately increased activity in prefrontal cortical as well as subcortical regions. Research Abstract Details 

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Acute left prefrontal transcranial magnetic stimulation in depressed patients is associated with immediately increased activity in prefrontal cortical as well as subcortical regions. Abstract Text:

Xingbao Li,Ziad Nahas,F Andrew Kozel,Berry Anderson,Daryl E Bohning,Mark S George,Xingbao Li,Ziad Nahas,F Andrew Kozel,Berry Anderson,Daryl E Bohning,Mark S George,Xingbao Li,Ziad Nahas,F Andrew Kozel,Berry Anderson,Daryl E Bohning,Mark S George,

BACKGROUND: Focal prefrontal cortex repetitive transcranial magnetic stimulation (rTMS) was originally investigated as a potential antidepressant under the assumption that in depressed patients, prefrontal cortex stimulation would produce changes in connected limbic regions involved in mood regulation. METHODS: Fourteen adult patients with depression were scanned in a 1.5-T scanner using interleaved rTMS (1 Hz) applied on the left prefrontal cortex over 7.35 min. Images were analyzed with Statistical Parametric Mapping 2b and principal component analysis. RESULTS: Over the left prefrontal cortex, 1-Hz TMS was associated with increased activity at the site of stimulation as well as in connected limbic regions: bilateral middle prefrontal cortex, right orbital frontal cortex, left hippocampus, mediodorsal nucleus of the thalamus, bilateral putamen, pulvinar, and insula (t = 3.85, p <.001). Significant deactivation was found in the right ventromedial frontal cortex. CONCLUSIONS: In depressed patients, 1-Hz TMS at 100% motor threshold over the left prefrontal cortex induces activation underneath the coil, activates frontal-subcortical neuronal circuits, and decreases activity in the right ventromedial cortex. Further work is needed to understand whether these immediate changes vary as a function of TMS use parameters (intensity, frequency, location) and whether they relate to neurobiologic effects and antidepressant mechanisms of TMS.

Acute left prefrontal transcranial magnetic stimulation in depressed patients is associated with immediately increased activity in prefrontal cortical as well as subcortical regions. Publishing Authors By Initials

X Li,Z Nahas,FA Kozel,B Anderson,DE Bohning,MS George,X Li,Z Nahas,FA Kozel,B Anderson,DE Bohning,MS George,X Li,Z Nahas,FA Kozel,B Anderson,DE Bohning,MS George,

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Acute left prefrontal transcranial magnetic stimulation in depressed patients is associated with immediately increased activity in prefrontal cortical as well as subcortical regions. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Biological psychiatry

VOLUME: 55

Page Numbers: 882-90

Journal Abbreviation: Biol. Psychiatry

ISSN: 0006-3223

DAY: 1

MONTH: May

YEAR: 2004

Acute left prefrontal transcranial magnetic stimulation in depressed patients is associated with immediately increased activity in prefrontal cortical as well as subcortical regions. Information

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LANGUAGE: eng

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AFFILIATION: Brain Stimulation Laboratory, Department of Psychiatry, Charleston, South Carolina, USA.

Country: United States

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MEDLINETA: Biol Psychiatry

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