Cross-Correlation of Motor Activity Signals from dc-Magnetoencephalography, Near-Infrared Spectroscopy, and Electromyography

Figure 4

Pairwise CCFs for the time series consisting of the concatenated move windows. Two time lag ranges are displayed: 𝜏=−15 to 15 seconds (left column) and 𝜏=−5 to 5 seconds (right column). Note the different 𝑦-axis of the figures at the bottom. Two separate periodicities are observed only in CCF(𝐵, EMGR).