Transcranial Magnetic Stimulation for Bipolar Depression

2014-08-27 03:38:41 | BioPortfolio


This is a study to assess the effectiveness of repetitive transcranial magnetic stimulation (rTMS) as a treatment for depressed adults with bipolar disorder.

In rTMS high-intensity, fluctuating magnetic fields non-invasively stimulate the cortex of the brain depolarising neurons. No anaesthetic is required and the treatment in subconvulsive. Recent studies suggest that rTMS can be an effective treatment for depressive illness in adults (Loo and Mitchell et al, 2005) and appears to be quite safe.

Most of the published studies to date have focused on unipolar depression. There is limited data of TMS use in bipolar depression. Eg. Pilot study by Nahas Z, Kozel FA, Li X, Anderson B, George 2003, which was negative.

The investigators wish to assess this in a sham-controlled study of adults. The investigators hypothesise that both left and right sided rTMS will have an antidepressant effect superior to sham in this population.


Inpatients and outpatients with major depressive episodes as part of either bipolar I or II illness will be eligible. In the event that patients (in any arm) have no significant response after a defined period, they will shift to an open phase where they will receive left prefrontal 10Hz stimulation. Thus all participants will have the opportunity to receive active treatment.

Study Design

Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double-Blind, Primary Purpose: Treatment


Bipolar Depression


Transcranial Magnetic Stimulation


Black Dog Research Institute
New South Wales




The University of New South Wales

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:38:41-0400

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Transcranial Magnetic Stimulation in Bipolar Depression

To compare antidepressant efficacy of left or right to sham Repetitive Transcranial Magnetic Stimulation (rTMS) to determine if non-responders can become responders if treated on the othe...

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PubMed Articles [8907 Associated PubMed Articles listed on BioPortfolio]

How effective is repetitive transcranial magnetic stimulation for bipolar depression?

Cognitive component of psychomotor retardation in unipolar and bipolar depression: Is verbal fluency a relevant marker? Impact of repetitive transcranial stimulation.

In the literature, psychomotor retardation (PMR) is increasingly highlighted as a relevant marker for depression. Currently, we chose to focus on the fluency capacities as an evaluation of the frontal...

A naturalistic, multi-site study of repetitive transcranial magnetic stimulation therapy for depression.

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Medical and Biotech [MESH] Definitions

The electrical response evoked in a muscle or motor nerve by electrical or magnetic stimulation. Common methods of stimulation are by transcranial electrical and TRANSCRANIAL MAGNETIC STIMULATION. It is often used for monitoring during neurosurgery.

Measurable changes in activities in the CEREBRAL CORTEX upon a stimulation. A change in cortical excitability as measured by various techniques (e.g., TRANSCRANIAL MAGNETIC STIMULATION) is associated with brain disorders.

A technique of brain electric stimulation therapy which uses constant, low current delivered via ELECTRODES placed on various locations on the scalp.

The prototypical tricyclic antidepressant. It has been used in major depression, dysthymia, bipolar depression, attention-deficit disorders, agoraphobia, and panic disorders. It has less sedative effect than some other members of this therapeutic group.

A technique that involves the use of electrical coils on the head to generate a brief magnetic field which reaches the CEREBRAL CORTEX. It is coupled with ELECTROMYOGRAPHY response detection to assess cortical excitability by the threshold required to induce MOTOR EVOKED POTENTIALS. This method is also used for BRAIN MAPPING, to study NEUROPHYSIOLOGY, and as a substitute for ELECTROCONVULSIVE THERAPY for treating DEPRESSION. Induction of SEIZURES limits its clinical usage.

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