The Nexus Trilogy a treadmill in Kyoto, Japan. Later work done by Phillip Kennedy and colleagues built the first intracortical brain–computer interface by implanting neurotrophic-cone electrodes into one man, Johnny Ray, a stroke victim unable to move muscles below his face. With the connection made, the electrodes can record the electrical impulses that travel across neurons when thinking occurs. Those signals are transferred to a transmitter embedded beneath the scalp. Amplified 1,000 times, the signals go to a computer, which translates them into cursor movement, allowing him the ability to communicate simply by thinking. Other research has seen success with sensory data, including
Electrical conduction system of the heart in every direction, so that the myocardium functions as a single contractile unit. This property allows rapid, synchronous depolarization of the myocardium. While advantageous under normal circumstances, this property can be detrimental, as it has potential to allow the propagation of incorrect electrical signals. These gap junctions can close to isolate damaged or dying tissue, as in a myocardial infarction (heart attack). Embryologic evidence of generation of the cardiac conduction system illuminates the respective roles of this specialized set of cells. Innervation of the heart begins with a brain only centered parasympathetic cholinergic first order. It is then followed by