Prism adaptation in normal aging: slower adaptation rate and larger aftereffect

Fernández-Ruíz, Juan; Hall, Cynthia; Vergara, Paula; Dı́az, Rosalinda

doi:10.1016/s0926-6410(99)00057-9

Cited by 122 publications

(132 citation statements)

References 27 publications

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“…In terms of aftereffects (a measure of visuomotor learning), the results are also confusing. In prism adaptation tasks, Fernandez-Ruiz et al (2000) reported larger aftereffects in the older group; whereas Roller et al (2002) did not find age differences in aftereffects. Moreover, McNay and Willingham (1998) showed that aging does not affect the aftereffects during post-exposure if participants are told of the absence of the visual distortion at the start of this phase.…”

mentioning

confidence: 61%

“…It can be argued that only the first post-exposure trial is free of volitional strategic shifts (Fernandez-Ruiz et al 2000), and thus, is a truer indicator of learning than additional post-exposure trials. The reduced aftereffects in the aged group when comparing the first post-exposure trial may be indicative of reduced visuomotor learning under a gradual adaptation regime.…”

Section: Buch Et Almentioning

confidence: 99%

“…Nevertheless, the age-related decline observed in visuomotor adaptation reported in some of the studies above could be explained by reduced plasticity (Pratt et al 1994;Mirmiran et al 1996), increased movement variability with age Darling et al 1989), deficits in visuospatial working memory (West 1996;Raz et al 2000;Richardson and Vecchi 2002), and degraded cognitive/strategic processing (McNay and Willingham 1998;Fernandez-Ruiz et al 2000;Raz et al 2000). These possible explanations have important consequences for both determining the underlying basis for deterioration of visuomotor mechanisms in aging and for devising new intervention procedures for new skill learning in elderly populations.…”

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confidence: 95%

“…Some studies found no age-related adaptation deficits (Canavan et al 1990;Roller et al 2002); whereas others suggest that aging results in slower and reduced adaptation (Etnier and Landers 1998;McNay and Willingham 1998;Fernandez-Ruiz et al 2000;Teulings et al 2002). In terms of aftereffects (a measure of visuomotor learning), the results are also confusing.…”

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confidence: 99%

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Visuomotor Adaptation in Normal Aging

Buch¹,

Young²,

2003

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Visuomotor adaptation to a gradual or sudden screen cursor rotation was investigated in healthy young and elderly subjects. Both age groups were equally divided into two subgroups; one subgroup was exposed to 11.25° step increments of visual feedback rotation, every 45 trials (up to a total of 90°), whereas a second subgroup was subjected to 90° rotation from the onset of exposure. Participants performed discrete, horizontal hand movements to virtual targets in four randomized directions. Targets appeared on a computer screen in front of them, and a board prevented vision of the hand at all times. Differential effects of aging on visuomotor adaptation were found, depending on the time course of the visual distortion. In both age groups, early exposure to the sudden visual feedback distortion resulted in typical spiral-like trajectories, which became straighter by late exposure. However, the final adaptation level was reduced in the aged group, although the aftereffects were similar. When subjects were exposed to the gradual distortion, no statistically significant differences in measures of adaptation with advancing age were found. In this case, both age groups appeared to adapt equally. However, after removal of the distortion, elderly subjects showed reduced aftereffects as compared with the young group. These findings suggest differential effects of aging on adaptation to gradual versus sudden visual feedback distortions, and may help to explain the conflicting results obtained in previous visuomotor adaptation studies

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confidence: 61%

Section: Buch Et Almentioning

confidence: 99%

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confidence: 95%

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confidence: 99%

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Visuomotor Adaptation in Normal Aging

Buch¹,

Young²,

2003

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“…Some showed comparable performance in young and old subjects (Bock and Schneider 2002;Buch et al, 2003;Etnier and Landers, 1998;Roller et al, 2002), but other showed distinct degradation in the elderly (Buch et al, 2003;Bock, 2005;Fernandez-Ruiz et al, 2000;McNay and Willingham, 1998). This discrepancy has been related to deficits of strategic control in elderly and has been interpreted as evidence that recalibration is ageresistant whereas strategic control might deteriorate in old age (Fernandez-Ruiz et al, 2000;McNay and Willingham, 1998). In another set of studies, Proteau (1996a, 1996b) suggested that older individuals appeared to process independently from each other depending on the different sources of sensory information available (vision and/or proprioception).…”

Section: Cursormentioning

confidence: 99%