Regions of interest‐wised inter‐brain neural synchronization analysis
INS
This study only focused on the HbO concentration due to its higher signal‐to‐noise compared to HbR (Mahmoudzadeh et al., Next, wavelet transform coherence (WTC) (Grinsted et al., Finally, Pearson's correlation analysis was performed to further investigate the relationship between the significantly changed INS values of ROIs and needling sensation. Statistical analyses were conducted using MATLAB (version 2018a, MathWorks Inc.).