New 'human fidelity' standard could reshape how implantable brain devices are judged

Implantable brain devices—from deep brain stimulation to a new generation of brain-computer interfaces—can help people with severe, treatment-resistant psychiatric and neurological conditions or loss of function (such as paralysis or blindness).

Despite the United States' heavy investment in building these devices and the systems to deliver them, there isn't a shared, measurable way to tell whether they are meeting the needs and expectations of the people and systems involved. ...