Effects of audio stimulation on gastric myoelectrical activity and sympathovagal balance in healthy adolescents and adults

Abstract

Gastric slow waves and the sympathovagal balance are more strongly affected by audio stimulation in adolescents than in adults. The test meal normalizes the audio stimulation-induced differences between the groups.

Ameliorating effects and autonomic mechanisms of needle‐less transcutaneous electrical stimulation atST36 on stress‐induced impairment in gastric slow waves

“…In this study, using the spectral analysis of the HRV, an established noninvasive method for the assessment of the autonomic functions, we reported a significant increase in LF/HF ratio, resulting from a combination of decreased HF and increased LF, with the cold stress. Similar autonomic mechanisms were also reported with other kinds of stress . It should be noted that the HRV reflects cardiac efferent activity; it is the vagal efferent signal from the brain to the cardiac branch.…”

“…28 Chen et al reported that audio stimulation (noise) decreased percentage of normal gastric slow wave in adolescents in fasting state. 29 In addition, there was a significant increase in the instability coefficient of dominant frequency with the cold stress. This EGG parameter reflects the variation of the gastric slow wave frequency through the recording period.…”

“…Similar autonomic mechanisms were also reported with other kinds of stress. 29,30,43 It should be noted that the HRV reflects cardiac efferent activity; it is the vagal efferent signal from the brain to the cardiac branch. While the HRV data cannot be used to represent gastric vagal activity, they are useful in demonstrating the involvement of the autonomic pathway with the TEA.…”

Ameliorating effect of transcutaneous electroacupuncture on impaired gastric accommodation induced by cold meal in healthy subjects

“…33 Besides low temperature, other psychophysiological stressors, including noise, arithmetic task, stroop color-word test, and horrifying movie showed similar inhibitory effects on gastric myoelectrical activity. [34][35][36] Improvement in impaired gastric slow waves with EA has been previously reported in both animals and humans. 13 EA at ST36 increased the regularity of gastric slow waves and the number of spike bursts in dogs.…”

Central and Peripheral Effects of Transcutaneous Acupuncture Treatment for Nausea in Patients with Diabetic Gastroparesis

“…The effect of stress on gastric slow waves was shown by Imai et al 32 who demonstrated an increase in tachygastria with a decrease in the normal slow waves induced by optokinetic motion sickness. Also, Chen et al 33 showed that audio stimulation (noise) impaired percentage of normal gastric slow wave in adolescents. In addition, Riezzo et al, 34 found similar effects on gastric slow waves by different forms of stress, such as cold water and arithmetic task.…”