Older adults reveal enhanced task-related beta power decreases during a force modulation task

Behavioural Brain Research
Lena HübnerClaudia Voelcker-Rehage

Abstract

Older adults (OA) compared to young adults (YA) reveal deteriorated fine motor control. However, it remains unknown whether this age difference is reflected on the central level, i.e., in electrophysiological correlates such as EEG task-related power (TRPow) in alpha (8-13 Hz) or beta band (13-30 Hz). Furthermore, we were interested in the association between age and alpha/beta power at rest as a potential determinant for TRPow changes. Twenty-five YA (19-29 years) and 45 OA (67-83 years) performed a force modulation (FM) task requiring to match a sinusoidal target force by exerting an isometric force with thumb and index finger. EEG was measured at rest and during FM task. YA outperformed OA in the FM task. For alpha, OA demonstrated less frontal power at rest than YA. For beta, OA revealed more power than YA in frontal, central, and parietal areas at rest. TRPow results depended on whether analyses were controlled for power at rest. When analyses were controlled, OA showed higher TRPow decreases than YA in beta in parietal and occipital areas during FM performance. TRPow decreases for beta were stronger in the contralateral than in the ipsilateral frontal hemisphere in OA than in YA. Decreases in TRPow indicate increased cort...Continue Reading

Citations

Jan 25, 2019·Neural Plasticity·Lena HübnerClaudia Voelcker-Rehage
Feb 13, 2019·Frontiers in Psychology·Eva-Maria ReuterClaudia Voelcker-Rehage
Apr 16, 2020·Frontiers in Physiology·Julian RudischClaudia Voelcker-Rehage
Jun 20, 2019·Frontiers in Human Neuroscience·Mahjabeen RahmanPeter A Hancock
Apr 10, 2021·NeuroImage·Tatsunori WatanabeHikari Kirimoto
Aug 31, 2021·Frontiers in Aging Neuroscience·Stephanie FröhlichClaudia Voelcker-Rehage
Dec 8, 2021·Experimental Gerontology·Shunsuke EbisuTomoya Ishida

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