Author(s)

Yu Zhiyu ¹, Xu Lei ¹, Wang Xia ¹, Shi Jianhong ¹, Li Yi ¹, Tang Feng ¹, Zhang Kemin ¹, Pu Zhaoxia ¹, Yi Yuan ¹, Li Xiaoling ¹, Deng Junyang ¹

Affiliation(s)

¹ Chengdu Gaoxin Southwest Children's Rehabilitation Hospital, Chengdu, Sichuan, 610000, China

Corresponding Author

Yu Zhiyu

ABSTRACT

This study examines the theoretical basis of assessing abnormalities in the somatosensory-motor cortex using Somatosensory Evoked Potentials (SEP) and explores the correlation between SEP and the Yale Global Tic Severity Scale (YGTSS) for clinically evaluating the severity of Tic Disorder (TD) Forty-one children with TD who met the inclusion criteria in our department of developmental behavior in 2024 were selected. Their SEPs were recorded using a somatosensory evoked potential recorder, focusing on the P₂₂ latency period, while their YGTSS scores were evaluated through clinical observation. There was a significant positive correlation between the P₂₂ latency period and YGTSS scores (r = 0.44, p < 0.01). Children with moderate to severe TD had significantly longer P₂₂ latency periods compared to those with mild TD (t = 2.75, p < 0.001, d = 0.96). Abnormalities in somatosensory evoked potentials are present in children with TD, supporting the existence of a consistent deficit in the cortical-striatal-thalamic-cortical loop. SEP holds promise as an objective indicator for the clinical assessment of TD severity.

KEYWORDS

Tic Disorder; Somatosensory Evoked Potentials; YGTSS Scale

CITE THIS PAPER

Yu Zhiyu, Xu Lei, Wang Xia, Shi Jianhong, Li Yi, Tang Feng, Zhang Kemin, Pu Zhaoxia,   Yi Yuan, Li Xiaoling, Deng Junyang. The Value of the YGTSS Scale and Somatosensory Evoked Potentials in Assessing Tic Disorder. MEDS Clinical Medicine (2024) Vol. 5: 179-183. DOI: http://dx.doi.org/10.23977/medsc.2024.050524.

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