A team of researchers customized a device to recognize signs of depression in one area of a patient's brain and apply a tiny burst of electricity to another.
The method employed by the team is a form of deep brain stimulation , which has shown promise in treating depression during clinical trials but has delivered little success. This could be because the markers in the brain that indicate the onset of depression vary from person to person.
The team mapped Sarah's stimulus-response over a period of 10 days using electrodes implanted in her frontal cortex aligning responses to stimulation to a symptom rating scale she filled in. One electrode lead from the device was placed in the brain area where the biomarker had been found and the other was connected to another region of Sarah's brain where the team had found stimulation led to relief.
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