期刊
BEHAVIOURAL BRAIN RESEARCH
卷 408, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.bbr.2021.113279
关键词
EEG band; Elderly; Electroencephalography; Postural balance; Sensory organization test
资金
- Ministry of Science and Technology of Taiwan [MOST 108-2314-B-040-022-]
This study found that elderly individuals exhibit different patterns of brain activity compared to young individuals when dealing with eye closure and misleading somatosensory information. Elderly participants showed sustained efforts in all sensory conditions, but may lack the efficacy in redistributing relative sensory weights when dealing with eye closure.
Sensory challenges to postural balance are daily threats for elderly individuals. This study examined electro-encephalography (EEG) in alpha and beta bands in sensory association areas during the Sensory Organization Test, involving withdrawal of visual or presenting misleading somatosensory inputs, in twelve young and twelve elderly participants. The results showed stepwise deterioration in behavioral performance in four conditions, with group effects that were amplified with combined sensory challenges. With eye closure, alpha and beta activities increased in all sensory association areas. Fast beta activity increased in the bilateral parietal-temporaloccipital areas. Misleading somatosensory information effects on EEG activity were of smaller amplitude than eye closure effects and in a different direction. Decreased alpha activity in left parietal-temporal-occipital areas and decreased beta and fast beta activities in bilateral parietal-temporal-occipital areas were significant. Elderly participants had increased fast beta activity in the left temporal-occipital and bilateral occipital areas, indicative of sustained efforts that they made in all sensory conditions. Similar to the young participants, elderly participants with eyes closed showed increased alpha activity, although to a smaller degree, in bilateral temporaloccipital and left occipital areas. This might indicate a lack of efficacy in redistributing relative sensory weights when elderly participants dealt with eye closure. In summary, EEG power changes did not match the stepwise deterioration in behavioral data, but reflected different sensory strategies adopted by young and elderly participants to cope with eye closure or misleading somatosensory information based on the efficacy of these different strategies.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据