Magnetoencephalography reveals impaired sensory gating and change detection in older adults in the somatosensory system
Pesonen, H., Strömmer, J., Li, X., Parkkari, J., Tarkka, I. M., & Astikainen, P. (2023). Magnetoencephalography reveals impaired sensory gating and change detection in older adults in the somatosensory system. Neuropsychologia, 190, Article 108702. https://doi.org/10.1016/j.neuropsychologia.2023.108702
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NeuropsychologiaAuthors
Date
2023Discipline
Monitieteinen aivotutkimuskeskusLiikuntalääketiedeHyvinvoinnin tutkimuksen yhteisöPsykologiaCentre for Interdisciplinary Brain ResearchSports and Exercise MedicineSchool of WellbeingPsychologyAccess restrictions
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© 2023 Elsevier
Brain electrophysiological responses can provide information about age-related decline in sensory-cognitive functions with high temporal accuracy. Studies have revealed impairments in early sensory gating and pre-attentive change detection mechanisms in older adults, but no magnetoencephalographic (MEG) studies have been undertaken into both non-attentive and attentive somatosensory functions and their relationship to ageing. Magnetoencephalography was utilized to record cortical somatosensory brain responses in young (20–28 yrs), middle-aged (46–56 yrs), and older adults (64–78 yrs) under active and passive somatosensory oddball conditions. A repeated standard stimulus was occasionally replaced by a deviant stimulus (p = .1), which was an electrical pulse on a different finger. We examined the amplitudes of M50 and M100 responses reflecting sensory gating, and later components reflecting change detection and attention shifting (M190 and M250 for the passive condition, and M200 and M350 for the active condition, respectively). Spatiotemporal cluster-based permutation tests revealed that older adults had significantly larger M100 component amplitudes than young adults for task-irrelevant stimuli in both passive and active condition. Older adults also showed a reduced M250 component and an altered M350 in response to deviant stimuli. The responses of middle-aged adults did not differ from those of younger adults, but this study should be repeated with a larger sample size. By demonstrating changes in both somatosensory gating and attentional shifting mechanisms, our findings extend previous research on the effects of ageing on pre-attentive and attentive brain functions.
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https://converis.jyu.fi/converis/portal/detail/Publication/193463745
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This study was supported by the Jenny and Antti Wihuri foundation (personal grant to Juho Strömmer) and Faculty of Sport and Health Sciences (Heidi Pesonen).License
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