Factors underlying age-related changes in discrete aiming

Experimental Brain Research
Florian Van HalewyckW F Helsen

Abstract

Age has a clear impact on one's ability to make accurate goal-directed aiming movements. Older adults seem to plan slower and shorter-ranged initial pulses towards the target, and rely more on sensory feedback to ensure endpoint accuracy. Despite the fact that these age-related changes in manual aiming have been observed consistently, the underlying mechanism remains speculative. In an attempt to isolate four commonly suggested underlying factors, young and older adults were instructed to make discrete aiming movements under varying speed and accuracy constraints. Results showed that older adults were physically able to produce fast primary submovements and that they demonstrated similar movement-programming capacities as young adults. On the other hand, considerable evidence was found supporting a decreased visual feedback-processing efficiency and the implementation of a play-it-safe strategy in older age. In conclusion, a combination of the latter two factors seems to underlie the age-related changes in manual aiming behaviour.

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Citations

Jul 28, 2016·Frontiers in Aging Neuroscience·Emilie SalviaChristian Collet
Oct 25, 2016·Brain and Cognition·Damon G LambKenneth M Heilman
Mar 23, 2017·PloS One·Denis MottetIsabelle Laffont
Mar 16, 2017·European Journal of Applied Physiology·Christian GreveRaoul M Bongers
Dec 29, 2019·Scientific Reports·Luka Peternel, Jan Babič
Oct 4, 2016·Experimental Brain Research·Jean-Jacques TempradoRita Sleimen-Malkoun
Nov 7, 2019·Somatosensory & Motor Research·János NégyesiJózsef Tihanyi
Jun 25, 2018·Experimental Brain Research·Changki KimEvangelos A Christou

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