Learn about brainwave frequencies
Neurofeedback works with the brain's electrical rhythms. Pick a band to see its waveform and what it means for how we feel and function.
2 seconds of EEG · 2 Hz — 2 cycles per second, 4 across the trace
The slowest and largest waves, spread broadly and symmetrically across the head. Seen in deep dreamless sleep, trance and unconsciousness — low arousal, not moving, not attending.
Opens best with room to work — open the planner in its own tab.
The precentral gyrus — origin of voluntary movement, organised as the motor homunculus.
Nearest 10–20 sites: C3, Cz, C4
Markers show approximately where each area sits, placed against the drawing’s own landmarks; they are not traced boundaries and this is not a localisation reference. Electrode sites are the nearest 10–20 positions, which do not align exactly with cytoarchitectonic borders. Areas 13–16 and 52 lie within the insula, under the temporal lobe, and appear on neither view.