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Updated: Jan 19, 2026

Using Facial Electromyography to Assess Facial Muscle Reactions to Experienced and Observed Affective Touch in Humans
Published on: March 15, 2019
Correlation between Changes in the Transverse Relaxation Time and Electromyographic Measurements of the Superficial
Tsuyoshi Fujii1, Satoshi Yamaguchi1, Yul-Wan Sung2
1Division of Aging and Geriatric Dentistry, Tohoku University Graduate School of Dentistry.
Abstract:
We analyzed the correlations between the T2 shift and integrated electromyographic (iEMG) values in the masseter and temporal muscles. Six healthy adults engaged in a clenching task over two durations at various bite forces. We evaluated the mean T2 shift per voxel and assessed their correlations with iEMG using a linear mixed model. The regression coefficients were different for each muscle type, similar for the left and right sides, and decreased upon doubling duration.

