Hemodynamics of the Frontopolar and Dorsolateral Pre-Frontal Cortex in People with Multiple Sclerosis During Walking, Cognitive Subtraction, and Cognitive-Motor Dual-Task

多发性硬化 物理医学与康复 认知 心理学 背外侧 背外侧前额叶皮质 任务(项目管理) 额叶皮质 工作记忆 神经科学 医学 前额叶皮质 管理 精神科 经济
作者
Felipe Balistieri Santinelli,Renee Veldkamp,Rodrigo Vitório,Daphne Kos,Maxine Vos,R.P.L. Nijssen,John DeLuca,Cintia Ramari,Peter Feys
出处
期刊:Neurorehabilitation and Neural Repair [SAGE]
卷期号:38 (11-12): 820-831 被引量:1
标识
DOI:10.1177/15459683241279066
摘要

Introduction Higher cortical activity has been observed in people with multiple sclerosis (pwMS) during walking and dual-tasking. However, further studies in overground walking and considering pre-frontal cortex (PFC) sub-areas are necessary. Objectives To investigate PFC activity during a cognitive-motor dual-task (DT) and its single component tasks, in combination with behavioral outcomes in pwMS. Methods Fifteen pwMS (EDSS 3.5 [2-5.5], 42 ± 11 years) and 16 healthy controls (HC, 45.2 ± 13.2 years) performed 3 conditions: single motor-walking (SWT), single cognitive – subtracting sevens (SCT), and a DT. Meters walked and the number of correct answers were obtained from which, respectively, the motor (mDTC) and cognitive (cDTC) DT costs were calculated. A functional Near-Infrared Spectroscopy covering the frontopolar and dorsolateral PFC (DLPFC) areas was used to concentration of relative oxyhemoglobin (ΔHbO2) and deoxyhemoglobin (ΔHHb) in the PFC. A repeated 2-way ANOVA (group × conditions) was used to compare ΔHbO2/ΔHHb and behavioral outcomes. Results PwMS walked shorter distances ( P < .002) and answered fewer correct numbers ( P < .03) than HC in all conditions, while cDTC and mDTC were similar between groups. PwMS presented higher ΔHbO2 in the frontopolar area than HC in the SWT ( P < .001). HC increased ΔHbO2 in frontopolar during the SCT ( P < .029) and DT ( P < .037) compared with the SWT. Conclusion Higher frontopolar activity in pwMS compared to HC in the SWT suggests reduced gait automaticity. Furthermore, it seems that only HC increased neural activity in the frontopolar in the SCT and DT, which might suggest a limit of cognitive resources to respond to DT in pwMS.

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