Assessment of EEG Sub-Band Spectral Changes Induced by Lu10 Acupressure Application

Abstract

This study investigates the neurophysiological implications of applied acupressure to the "Lu10" acupoint. Scalp electroencephalography (EEG) was recorded from ten participants for eight sessions over a period of one month. After eliminating the artefacts with the help of FIR bandpass filter, the band power was computed for each sub-band before and after the intervention. Significant alterations in band power were observed in alpha and beta sub-band post stimuli. Results suggest that the delta and beta band power increases by 25% ±2.8 and 36.4% ±3.0 respectively. It reflects improved relaxation and improved cognitive focus post-intervention. Also, a 20% decrease in the delta-theta ratio was observed which signifies a shift from profound relaxation to a more awake and attentive state. A decrease (9.3% ±2.8) in alpha power suggests a shift from passive relaxation to more active mental involvement. The short-term appearance of beta activities reveals increased alertness without causing significant stress. These results highlight that acupressure may be used as a non-invasive treatment to improve relaxation, cognitive function, and emotional control.