Answer:
C... i think
Explanation:
he treatment involves implanting wires into the brain and a stimulator in the chest or abdomen.
The stimulator sends small electrical pulses to the wires along a connection lead under the skin. Doctors sometimes refer to the stimulator as a pacemaker.
The surgeons implant the wires into areas of the brain that are responsible for the symptoms of the particular condition. In the case of Parkinson's disease, for example, they implant them into the brain area that controls movement.
In the new American Journal of Psychiatry study, the surgeons had implanted the wires into the subcallosal cingulate (SCC).
The senior author of the study is Dr. Helen S. Mayberg, who is a professor of neurology, neurosurgery, psychiatry, and neuroscience at the Icahn School of Medicine at Mount Sinai in New York, NY, and founding director of its Nash Family Center for Advanced Circuit Therapeutics.
Prof. Mayberg and her team have been studying the SCC as a potential target for severe depression for more than a decade.
In a 2005 study, they showed how deep brain stimulation of the SCC could benefit people with severe depression that does not respond to other available treatments.
However, in a randomized clinical trial that took place at several centers, the investigators stopped the study early.
They did this because while the treatment appeared safe and feasible, there were no statistically significant improvements in depressive symptoms after 6 months.
In that trial, the researchers had compared the effect of the real treatment with that of a sham treatment. Neither the participants nor the people giving them the treatment knew who was in which group.
An example of a sham deep brain stimulation is one in which the implantation and monitoring of the stimulator are just like the real thing, but the device does not send pulses to the wires in the brain.
In the meantime, Prof. Mayberg and her team continued to follow participants from earlier investigations to see what happened over a longer period
Hope this helps darling!
