Novel Behavioral and Neural Evidences for Age-Related changes in Force complexity

The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
Yi-Ching ChenIng-Shiou Hwang

Abstract

This study investigated age-related changes in behavioral and neural complexity for a polyrhythmic movement, which appeared to be an exception to the loss of complexity hypothesis. Young (n = 15; age = 24.2 years) and older (15; 68.1 years) adults performed low-level force-tracking with isometric index abduction to couple a compound sinusoidal target. Multiscale entropy (MSE) of tracking force and inter-spike interval (ISI) of motor unit (MU) in the first dorsal interosseus muscle were assessed. The MSE area of tracking force at shorter time scales of older adults was greater (more complex) than that of young adults, whereas an opposite trend (less complex for the elders) was noted at longer time scales. The MSE area of force fluctuations (the stochastic component of the tracking force) were generally smaller (less complex) for older adults. Along with greater mean and coefficient of ISI, the MSE area of the cumulative discharge rate of elders tended to be lower (less complex) than that of young adults. In conclusion, age-related complexity changes in polyrhythmic force-tracking depended on the time scale. The adaptive behavioral consequences could be multifactorial origins of the age-related impairment in rate coding, increase...Continue Reading

References

Apr 1, 1992·JAMA : the Journal of the American Medical Association·L A Lipsitz, A L Goldberger
May 1, 1986·Behavioural Brain Research·R C MiallJ F Stein
Aug 1, 1982·The Journal of Physiology·C J De LucaA P Xenakis
Mar 20, 1999·Journal of Physiology, Paris·M Piotrkiewicz
Oct 12, 2000·Journal of Neurophysiology·A B SlifkinK M Newell
Feb 7, 2003·Journal of Applied Physiology·David E Vaillancourt, Karl M Newell
Mar 1, 1993·Journal of Motor Behavior·R C MiallJ F Stein
Aug 9, 2003·Journal of Neurophysiology·John G SemmlerRoger M Enoka
Jun 29, 2004·Journal of Applied Physiology·David E VaillancourtKarl M Newell
Mar 24, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Madalena CostaC-K Peng
Jun 11, 2005·Journal of Biomechanics·John H Challis
Aug 11, 2006·Journal of Neurophysiology·Carlo J De LucaS Hamid Nawab
Sep 9, 2006·Journal of Applied Physiology·Christopher A Knight, Gary Kamen
Dec 19, 2008·The Journals of Gerontology. Series B, Psychological Sciences and Social Sciences·Jacob J Sosnoff, Karl M Newell
Feb 24, 2009·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Tetsuya TakahashiYuji Wada
Oct 30, 2009·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Jeremy R ManningMichael J Kahana
Mar 31, 2010·Experimental Brain Research·Edward OforiJacob J Sosnoff
May 1, 2010·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·S Hamid NawabCarlo J De Luca
Jul 30, 2011·Experimental Brain Research·Deanna M Kennedy, Evangelos A Christou
Jun 6, 2014·Journal of Neurophysiology·Carlo J De LucaPaola Contessa
Sep 23, 2014·Journal of Cognitive Neuroscience·Jennifer J HeiszAnthony R McIntosh
Nov 13, 2014·Exercise and Sport Sciences Reviews·Dario Farina, Francesco Negro
Jun 18, 2015·Frontiers in Physiology·Joachim P SturmbergAndrew J E Seely
Sep 25, 2015·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Bradley VoytekAdam Gazzaley
Feb 19, 2016·Physiology·Dario FarinaRoger M Enoka
Nov 1, 2016·Journal of Applied Physiology·Sandra K HunterKevin G Keenan
Mar 7, 2017·Frontiers in Physiology·Neha Lodha, Evangelos A Christou
Nov 24, 2017·Frontiers in Human Neuroscience·Yi-Ching ChenIng-Shiou Hwang

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Citations

Oct 20, 2019·Journal of Aging and Physical Activity·Yi-Ching ChenIng-Shiou Hwang
Apr 23, 2020·European Journal of Applied Physiology·Yi-Ching ChenIng-Shiou Hwang

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