Vision for Motor Performance in Virtual Environments Across the Lifespan

Grabowski, Patrick J.; Mason, Andrea

doi:10.5772/37341

Cited by 4 publications

(8 citation statements)

References 73 publications

(96 reference statements)

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“…In conclusion, our findings support that aging groups, especially middle-aged, tend to rely more on a visual feedback control when vision of the hand was occluded. Recently, Grabowski and Mason (2012 and 2019) [18, 32] investigated RTG performance in virtual reality and reported conflicting results with our findings. Previous studies revealed that middle-aged participants tend to use full visual feedback of the hand to improve RTG performance, while older participants have a tendency to rely more on a feed-forward strategy when vision was occluded [18].…”

Section: Discussioncontrasting

confidence: 86%

“…Recently, Grabowski and Mason (2012 and 2019) [18, 32] investigated RTG performance in virtual reality and reported conflicting results with our findings. Previous studies revealed that middle-aged participants tend to use full visual feedback of the hand to improve RTG performance, while older participants have a tendency to rely more on a feed-forward strategy when vision was occluded [18]. In addition, the recent research reported visual occlusion using virtual reality did not affect movement time of RTG movement across different age groups [32].…”

Section: Discussioncontrasting

confidence: 86%

“…Younger adults have the ability to utilize visual information differently compared to middle-aged and older adults [18]. However, performing the task in a virtual environment might utilize the movement kinematics differently from the real workplace similar to our study [5, 18]. In addition, there is evidence that brain activity is altered between experiences in virtual reality and real world [20, 21].…”

Section: Introductionsupporting

confidence: 63%

“…Different movement strategies among younger, middle-aged and older groups were reported when performing precision grasp [18, 19]. Younger adults have the ability to utilize visual information differently compared to middle-aged and older adults [18]. However, performing the task in a virtual environment might utilize the movement kinematics differently from the real workplace similar to our study [5, 18].…”

Section: Introductionsupporting

confidence: 53%

“…Only a few studies have assessed reach-to-grasp performance across a life span and investigated the effect of visual occlusion in virtual environments. Different movement strategies among younger, middle-aged and older groups were reported when performing precision grasp [18, 19]. Younger adults have the ability to utilize visual information differently compared to middle-aged and older adults [18].…”

Section: Introductionmentioning

confidence: 99%

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Age-related changes in reach-to-grasp movements with partial visual occlusion

et al. 2019

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This study investigated the influence of age and visual occlusion on fast reach-to-grasp movements. The effect of visual occlusion on reach-to-grasp movement was examined using a task that heavily relies on feed-forward control. Three groups of healthy adults aged 22, 49 and 65 on average performed fast reach-to-grasp movements with full visual and partial visual occlusion conditions of the hand during the initial part of movement. Regarding the effect of age, the all parameters of reach-to-grasp movement were deteriorated with age, except relative time to maximum velocity and spatial coordination. Regarding the effect of visual condition, participants reached with prolonged movement time, lower peak velocity, and later occurrences of peak velocity and peak aperture, as well as decrease in spatial coordination. Regarding the effect of age on visual condition, visual occlusion resulted in a longer movement time and delayed time to maximum velocity in middle-aged and older groups compared to full vision, but the difference was not observed in the younger groups. Conclusion: Reach-to-grasp performance deteriorated with age and the performance was affected when vision of the hand at initial movement was occluded. Overall, movement performance in middle-aged and older adults was affected by visual occlusion, whereas it was unaffected in younger adults. The results indicate that visual feedback of the hand at initial movement is important to control reach-to-grasp movement of middle-aged and older adults during real tasks.

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Section: Discussioncontrasting

confidence: 86%