Automatic auditory and somatosensory brain responses in relation to cognitive abilities and physical fitness in older adults
Strömmer, J., Põldver, N., Waselius, T., Kirjavainen, V., Järveläinen, S., Björksten, S., Tarkka, I., & Astikainen, P. (2017). Automatic auditory and somatosensory brain responses in relation to cognitive abilities and physical fitness in older adults. Scientific Reports, 7, Article 13699. https://doi.org/10.1038/s41598-017-14139-9
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2017Copyright
© the Authors 2017. This article is licensed under a Creative Commons Attribution 4.0 International License.
In normal ageing, structural and functional changes in the brain lead to an altered processing of sensory
stimuli and to changes in cognitive functions. The link between changes in sensory processing and
cognition is not well understood, but physical ftness is suggested to be benefcial for both. We recorded
event-related potentials to somatosensory and auditory stimuli in a passive change detection paradigm
from 81 older and 38 young women and investigated their associations with cognitive performance. In
older adults also associations to physical ftness were studied. The somatosensory mismatch response
was attenuated in older adults and it associated with executive functions. Somatosensory P3a did not
show group diferences, but in older adults, it associated with physical ftness. Auditory N1 and P2
responses to repetitive stimuli were larger in amplitude in older than in young adults. There were no
group diferences in the auditory mismatch negativity, but it associated with working memory capacity
in young but not in older adults. Our results indicate that in ageing, changes in stimulus encoding and
deviance detection are observable in electrophysiological responses to task-irrelevant somatosensory
and auditory stimuli, and the higher somatosensory response amplitudes are associated with better
executive functions and physical fitness.
...
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Nature Publishing GroupISSN Search the Publication Forum
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