As an attempt to improve his depressed patient who has not responded to therapy or medication, Dr. Thompson has just implanted a battery-powered stimulator in the chest of his patient just beneath the skin, with a lead that delivers calibrated electrical pulses. This patient is receiving __________.

Question

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Vagal nerve stimulation involves the implantation of a battery-powered stimulator in the chest that is connected to the vagus nerve, which runs from the brainstem to the abdomen. The electrical signals delivered by the stimulator can help to regulate mood and alleviate symptoms of depression. Deep brain stimulation involves the implantation of electrodes in specific regions of the brain, while electroconvulsive therapy involves delivering electrical currents to the brain to induce a seizure. Repetitive transcranial magnetic stimulation involves delivering magnetic pulses to the brain to stimulate nerve cells.

As an Attempt to Improve His Depressed Patient Who Has