Correlations between anxiety and the stress responses of electrogastrography (EGG) induced by the mirror drawing test (MDT).
Electrogastrograms (EGGs) were recorded at 16 locations on the thoraco-abdominal surface at rest and then both during and after the acute stress of performing the mirror drawing test (MDT). A significant linear correlation with a negative slope was found between the anxiety scores and the ratio of the power content during MDT to the power content at rest (r) (MDTr(-1)) of the 3 cpm component from the epigastric channel 2 recording. In contrast, significant linear correlations with positive slopes were found between the anxiety scores and MDTr(-1) of the 6 cpm component of the recordings from the infraumbilical channels (channels 13, 15, and 16). The epigastric 3-cpm EGG activity reflects gastric myoelectric activity, while the infraumbilical 3- and 6-cpm activity reflects that of the colon. Therefore, these results seem to further support the previous report of the inhibition of gastric EGG by stress and the stress-mediated facilitation of colonic EGG (Homma S, J Smooth Muscle Res. 2012; 48(2-3): 47-57).
Division of Organ Physiology, Department of Regenerative and Transplant Medicine, Institute of Medicine and Dentistry, Niigata University, Academic Assembly, Japan.
Shinji
S
Homma
D000328:Adult; D001007:Anxiety / Q000503:physiopathology*; D003106:Colon / Q000503:physiopathology*; D004576:Electromyography; D004594:Electrophysiology; D005260:Female; D005769:Gastrointestinal Motility; D006801:Humans; D008297:Male; D009130:Muscle, Smooth / Q000503:physiopathology*; D012146:Rest / Q000502:physiology; D013270:Stomach / Q000503:physiopathology*; D013315:Stress, Psychological / Q000503:physiopathology*; D055815:Young Adult