Mu Rhythm

A pattern of electrical brain activity oscillating at approximately 8-12 Hz, recorded over the sensorimotor cortex. Mu rhythms are suppressed (desynchronised) when a person performs or imagines performing a movement, a phenomenon known as event-related desynchronisation. In brain-computer interfaces, users can learn to voluntarily suppress or enhance their mu rhythm to generate control signals, enabling cursor movement or device operation through thought alone. Mu rhythm modulation is one of the primary signal features used in non-invasive EEG-based BCIs for people with severe motor disabilities.