Figure 4.

Temporal relationship between movement-related cerebral fields (MRCFs) and EMGs. (A) MRCF waveform modeled based on the parameters of smf, averaged across subjects. Black and gray lines represent unfiltered and filtered responses, respectively. The vertical line a represents the onset time of readiness fields, and peak latency for motor field (MF), MEFI, MEFII, and MEFIII are indicated in alphabetical order from b to e, respectively. The onset latency of the readiness field and peak latencies of MEFs were derived from the records of unfiltered and filtered MEG responses, respectively. (B) Rectified EMG signals recorded from two agonist muscles (ago1 and ago2) and one antagonist muscle (ant), both of which are time locked to the trigger pulse, and averaged across subjects. (C) Temporal relationship between the onset latency of activation of three muscles and readiness fields (a), and peak latency for MF (b), MEFI (c), MEFII (d), and MEFIII (e).