Continuous theta burst TMS of area MT+ impairs attentive motion tracking

CTB公司 心理学 听力学 刺激(心理学) 神经科学 刺激 物理医学与康复 医学 磁刺激 认知心理学 初级运动皮层
作者
Arijit Chakraborty,Tiffany Tran,Andrew E. Silva,Deborah Giaschi,Benjamin Thompson
出处
期刊:European Journal of Neuroscience [Wiley]
卷期号:54 (9): 7289-7300 被引量:4
标识
DOI:10.1111/ejn.15480
摘要

Abstract Attentive motion tracking deficits measured using multiple object tracking (MOT) tasks have been identified in a number of neurodevelopmental disorders such as amblyopia and autism. These deficits are often attributed to the abnormal development of high‐level attentional networks. However, neuroimaging evidence from amblyopia suggests that reduced MOT performance can be explained by impaired function in motion‐sensitive area MT+ alone. To test the hypothesis that a subtle disruption of MT+ function could cause MOT impairment, we assessed whether continuous theta burst stimulation (cTBS) of MT+ influenced MOT task accuracy in individuals with normal vision. The MOT stimulus consisted of four target and four distractor dots and was presented at ±10° eccentricity (right/left hemifield). fMRI‐guided cTBS was applied to left MT+. Participants ( n = 13, age: 27 ± 3) attended separate active and sham cTBS sessions where the MOT task was completed before, 5‐min post‐ and 30‐min post‐cTBS. Active cTBS significantly impaired MOT task accuracy relative to baseline for the right (stimulated) hemifield 5‐min (10 ± 2% reduction) and 30‐min (14 ± 3% reduction) post‐stimulation. No impairment occurred within the left (control) hemifield after active cTBS or for either hemifield after sham cTBS. These results highlight the importance of lower level motion processing for MOT, suggesting that a minor disruption of MT+ function alone is sufficient to cause a deficit in MOT performance.
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