Coupled Temporal Fluctuation and Global Signal Synchronization of Spontaneous Brain Activity in Hypnosis for Respiration Control: An fMRI Study. (1st March 2020)

• Record Type: Journal Article
• Authors: Liu, Yanjun; He, Yini; Li, Rongmao; Yu, Shaode; Xu, Jianyang; Xie, Yaoqin
• Is Part Of: Neuroscience. Volume 429(2020)
• Page Start: 56
• Page End: 67
• Publication Date: 2020-03-01
• Subjects: ALFF amplitude of low frequency fluctuation -- AN attention network -- BA Brodmann area -- BOLD blood oxygen level-dependent -- corr. correlation coefficient -- CPL cerebellum posterior lobe -- DC degree centrality -- DMN default mode network -- ECN executive control network -- FD frame-wise displacement -- fMRI functional magnetic resonance imaging -- GRF Gaussian Random Fields -- HS hypnosis state -- ISL inferior semilunar lobule -- MTG middle temporal gyrus -- PCC posterior cingulate cortex -- PCu precuneus -- ReHo regional homogeneity -- RS rest state -- SMN sensorimotor network -- VMHC voxel-mirrored homotopic connectivity -- VN visual network; hypnosis -- consciousness -- functional MRI -- signal synchronization -- temporal fluctuation -- functional connectivity; Neurochemistry -- Periodicals; Neurophysiology -- Periodicals; Neurology -- Periodicals; Neurochimie -- Périodiques; Neurophysiologie -- Périodiques; Neurochemistry; Neurophysiology; Electronic journals; Periodicals; Electronic journals; 612.8
• DOI: 10.1016/j.neuroscience.2019.12.032
• Languages: English
• ISSNs: 0306-4522

Abstract

Graphical abstract: Highlights: Hypnosis was observed with increased brain activity in calcarine cortex, fusiform gyrus and middle temporal gyrus. Hypnosis was observed with decreased brain activity in posterior cerebellum. Enhanced positive correlations between temporal fluctuation and signal synchronization were observed during hypnosis. Coupled correlation between temporal fluctuation and global signal synchronization was observed during hypnosis. Abstract: Hypnosis is a psychological technology proved to be effective in respiratory motion control, which is essential to reduce radiation dose during radiotherapy. This study explored the neural mechanisms and cognitive neuroscience of hypnosis for respiration control by functional magnetic resonance imaging with a within-subject design of 15 healthy volunteers in rest state (RS) and hypnosis state (HS). Temporal fluctuation and signal synchronization of brain activity were employed to investigate the altered physiological performance in hypnosis. The altered correlations between temporal fluctuation and signal synchronization were examined within large scale of intrinsic networks which were identified by seed-wise functional connectivity. As a result, hypnosis was observed with increased activity in the right calcarine, bilateral fusiform gyrus and left middle temporal gyrus, and with decreased activity in the left cerebellum posterior lobe (inferior semilunar lobule part). Compared to RS, enhanced positive correlations were observed between temporal fluctuation and signal synchronization in HS. Most importantly, coupled correlation was observed between temporal fluctuation and global signal synchronization within the identified intrinsic networks ( R = 0.3843, p > 0.05 in RS; R = 0.6212, p < 0.005 in HS). The findings provide implications for the neural basis of hypnosis for respiratory motion control and suggest the involvement of emotional processing and regulation of perceptual consciousness in hypnosis.