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Table 1 Frequency (expressed in Hz) of the first and second coherence peak (± 1 SD) both for inter- (A) and intra-hemispheric (B) comparisons

From: How does a surgeon’s brain buzz? An EEG coherence study on the interaction between humans and robot

A. BASELINE LAPAROSCOPY ROBOTIC SURGERY
  1° PEAK 2° PEAK 1° PEAK 2° PEAK 1° PEAK 2° PEAK
Frequency (Hz)       
SMA versus:       
M1 8.4 ± 0.5 7.8 ± 0.6 7.2 ± 0.5 7.5 ± 0.4 9.3 ± 1.0 8.5 ± 0.7
S1 7.9 ± 0.6 8.0 ± 0.7 8.0 ± 0.1 7.3 ± 0.3 12.3 ± 1.2 13.1 ± 1.4
Pre-SMA versus:       
M1 8.4 ± 0.4 8.7 ± 0.7 7.6 ± 0.3 7.9 ± 0.2 13.5 ± 1.8 12.6 ± 1.3
S1 9.1 ± 0.3 8.9 ± 0.5 9.5 ± 0.1 7.9 ± 0.3 15.8 ± 2.0 14.6 ± 1.4
M1 versus S1 8.5 ± 0.8 8.0 ± 0.6 7.9 ± 0.2 7.5 ± 0.4 8.9 ± 1.0 8.2 ± 0.8
M1 versus V1 9.8 ± 0.9 8.4 ± 0.6 7.2 ± 0.4 7.8 ± 0.3 8.4 ± 0.5 8.7 ± 0.6
B . 1° PEAK 2° PEAK
pre-SMA versus contralateral M1:   
Baseline 9.3 ± 0.5 9.4 ± 0.4
Laparoscopy 9.0 ± 0.3 9.5 ± 0.1
Robotic surgery 14.5 ± 1.3 15.9 ± 1.8
pre-SMA versus contralateral S1:   
Baseline 7.7 ± 0.5 8.9 ± 0.8
Laparoscopy 7.0 ± 0.2 8.1 ± 0.3
Robotic surgery 14.1 ± 1.0 14.5 ± 1.3
  1. As concerns interhemispheric recordings, here we reported only the comparisons between pre-SMA and contralateral M1 or S1 area. Note the predominance of upper alpha and beta frequency during the execution of the motor task with the robotic device.