Detecting the Intention to Move Upper Limbs from Electroencephalographic Brain Signals

Figure 3

Significant event-related desynchronization/synchronization activity computed for all trials and subjects. Horizontal axis represents time (units of s) while vertical axis represents frequency (units of Hz). Solid black lines in all graphs represent  s or the movement onset. Significant desynchronization () is observed in all sensors in the motor-related  Hz and  Hz frequency bands from ≈ −1.5 s, while no significant desynchronization or synchronization () is observed before ≈ −1.5 s.