Figure 1: Idealized bidirectional brain–machine interface for prosthetic control. | Nature Reviews Neuroscience

Figure 1: Idealized bidirectional brain–machine interface for prosthetic control.

From: Restoring sensorimotor function through intracortical interfaces: progress and looming challenges

Figure 1

Neural signals from motor-related areas of the brain — for example, the primary motor cortex (M1) — that encode the intended movement (motor intent) are decoded and used to control the movement of the prosthetic limb. Sensors on the prosthetic limb convey information about movements of the limb and any objects with which it comes into contact. The output of these sensors is converted into patterns of electrical stimulation (stimulus pulses), which are delivered to sensory areas of the brain — for example, the primary somatosensory cortex (S1) — via chronically implanted arrays of electrodes.

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