Role of the Frontal Cortex in Standing Postural Sway Tasks While Dual-Tasking: A Functional Near-Infrared Spectroscopy Study Examining Working Memory Capacity.

TitleRole of the Frontal Cortex in Standing Postural Sway Tasks While Dual-Tasking: A Functional Near-Infrared Spectroscopy Study Examining Working Memory Capacity.
Publication TypeJournal Article
Year of Publication2016
AuthorsFujita, H, Kasubuchi, K, Wakata, S, Hiyamizu, M, Morioka, S
JournalBiomed Res Int
Volume2016
Pagination7053867
Date Published2016
ISSN2314-6141
KeywordsAdult, Attention, Cognition, Female, Frontal Lobe, Humans, Male, Memory, Short-Term, Postural Balance, Posture, Psychomotor Performance, Spectroscopy, Near-Infrared
Abstract

Posture control during a dual-task involves changing the distribution of attention resources between the cognitive and motor tasks and involves the frontal cortex working memory (WM). The present study aimed to better understand the impact of frontal lobe activity and WM capacity in postural control during a dual-task. High and low WM-span groups were compared using their reading span test scores. High and low WM capacity were compared based on cognitive and balance performance and hemoglobin oxygenation (oxyHb) levels during standing during single (S-S), standing during dual (S-D), one leg standing during single (O-S), and one leg standing during dual (O-D) tasks. For sway pass length, significant difference in only the O-D task was observed between both groups. oxyHb levels were markedly increased in the right dorsolateral prefrontal cortex and supplementary motor area in the high-span group during a dual-task. Therefore, WM capacity influenced the allocation of attentional resources and motor performance.

DOI10.1155/2016/7053867
Alternate JournalBiomed Res Int
PubMed ID27034947
PubMed Central IDPMC4791508

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