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Deep Brain Stimulation shows promise for patients with chronic, treatment resistant Anorexia Nervosa
Date:3/6/2013

al brain circuits. Neuroimaging has shown that there are both structural and functional differences between anorexia patients and healthy controls in brain circuits which regulate mood, anxiety, reward and body-perception.

Patients were awake when they underwent the procedure which implanted electrodes into a specific part of the brain involved with emotion, and found to be highly important in disorders such as depression. During the procedure, each electrode contact was stimulated to look for patient response of changes in mood, anxiety or adverse effects. Once implanted, the electrodes were connected to an implanted pulse generator below the right clavicle, much like a heart pacemaker.

Testing of patients was repeated at one, three, and six-month intervals after activation of the pulse generator device. After a nine-month period following surgery, the team observed that three of the six patients had achieved weight gain which was defined as a body-mass index (BMI) significantly greater than ever experienced by the patients. For these patients, this was the longest period of sustained weight gain since the onset of their illness.

Furthermore, four of the six patients also experienced simultaneous changes in mood, anxiety, control over emotional responses, urges to binge and purge and other symptoms related to anorexia, such as obsessions and compulsions. As a result of these changes, two of these patients completed an inpatient eating disorders program for the first time in the course of their illness.

"We are truly ushering in a new of era of understanding of the brain and the role it can play in certain neurological disorders," says Dr. Lozano. "By pinpointing and correcting the precise circuits in the brain associated with the symptoms of some of these conditions, we are finding additional options to treat these illnesses."

While the treatment is still considered experimental, it is believed to work by stimulating a speci
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Contact: Alexa Giorgi, Senior Public Affairs Advisor
alexa.giorgi@uhn.ca
416-603-5800 x6776
University Health Network
Source:Eurekalert  

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Deep Brain Stimulation shows promise for patients with chronic, treatment resistant Anorexia Nervosa
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