Brain activation during the expectations of sensory experience for cutaneous electrical stimulation

NeuroImage. Clinical
Won-Mo JungYounbyoung Chae

Abstract

The brain actively interprets sensory inputs by integrating top-down and bottom-up information. Humans can make inferences on somatosensation based on prior experiences and expectations even without the actual stimulation. We used functional magnetic resonance imaging to investigate the neural substrates of the expectations of the sensory experience of cutaneous electrical stimulation on acupoint without actual stimuli. This study included 22 participants who wore sticker-type electrodes attached on three different acupoints on different body regions: CV17 (chest), CV23 (chin), and left PC6 (arm). Participants evaluated de qi sensations after they expected electrical stimulation on those points in random order without actual stimulation. All stimuli were presented with corresponding visual information of the stimulation sites. The control condition included the same visual information but outside the body. The expectations of cutaneous electrical stimuli without actual stimulation on three acupoints resulted in greater de qi sensation compared to the control condition. Cognitive components of cutaneous electrical stimulation exhibited greater brain activation in the anterior insula, pre-supplementary motor area, and secondary s...Continue Reading

Citations

Jul 14, 2019·Health Expectations : an International Journal of Public Participation in Health Care and Health Policy·Jenni MurrayRebecca Lawton
Aug 3, 2021·Integrative Medicine Research·In-Seon Lee, Younbyoung Chae
Aug 24, 2021·Brain Communications·Elia BenhamouJason D Warren

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Software Mentioned

3dClustSim
Analysis of Functional NeuroImages ( AFNI )
Matlab
PsychToolbox
3dDeconvolve
AFNI

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