At which electrodes is Mu rhythm primarily observed?

Mu rhythm is primarily observed at the central electrode locations, which correspond to the regions of the brain that are associated with motor control and sensory processing. The central strip of electrodes, particularly C3 and C4, is situated over the primary motor cortex in the left and right hemispheres, respectively. This is where the Mu rhythm, typically characterized by an 8-12 Hz rhythm, is recorded, especially when the individual is at rest and not engaging in movement.

The significance of the Mu rhythm lies in its association with motor planning and the mirror neuron system, which plays a vital role in observational learning and understanding others' actions. Observations of this rhythm can provide insights into motor system engagement and coordination.

While other options may be associated with different brain functions—such as visual processing or frontal executive functioning—C3/C4 is the optimal location for capturing the Mu rhythm due to its proximity to the underlying neural structures responsible for motor activity.