Constraints on Prehension: A Framework for Studying the Effects of Aging

Roy, Éric; Weir, Patricia L.; Leavitt, Jack

doi:10.1016/s0166-4115(96)80013-6

Cited by 11 publications

(2 citation statements)

References 97 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lengthening of the deceleration phase is reported to lead to a 15–30% increase in movement time for older adults (e.g., Buckles, ) and has been attributed to an increase in feedback‐dependent corrective mechanisms needed to continuously and consciously modify movements to meet action requirements (Bennett & Castiello, ; Roy et al, ). According to Cicerale et al () older adults strategy reflects compensation, whereby a “play it safe” strategy, characterized by a longer deceleration phase and less wrist rotation, is assumed to reduce the likelihood of error.…”

Section: Discussionmentioning

confidence: 99%

“…In reaching and grasping, differences in performance have been attributed to lengthening of the deceleration phase, which corresponds to the final approach to the target goal. This allows for more feedback-dependent corrective mechanisms, as the ability to use feed-forward control declines with age (Bennett & Castiello, 1994;Buckles, 1993;Roy, Weir, & Leavitt, 1996;Seidler-Dobrin & Stelmach, 1998). A more conservative or "play-it-safe" strategy is thus observed, enabling older adults to reach the target accurately and without error (Bennett & Castiello, 1994;Seidler et al, 2010;Welsh, Higgins, & Elliott, 2007).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

How the mode of action affects evidence of planning and movement kinematics in aging: End‐state comfort in older adults

Scharoun

Gonzalez

Roy

et al. 2015

Developmental Psychobiology

Self Cite

View full text Add to dashboard Cite

Motor deficits are commonly observed with age; however, it has been argued that older adults are more adept when acting in natural tasks and do not differ from young adults in these contexts. This study assessed end-state comfort and movement kinematics in a familiar task to examine this further. Left- and right-handed older adults picked up a glass (upright or overturned) as if to pour water in four modes of action (pantomime, pantomime with image/cup as a guide, actual grasping). With increasing age, a longer deceleration phase (in pantomime without a stimulus) and less end-state comfort (in pantomime without a stimulus and image as a guide) was displayed as the amount of contextual information available to guide movement decreased. Changes in movement strategies likely reflect an increased reliance on feedback control and demonstration of a more cautious movement. A secondary aim of this study was to assess hand preference and performance, considering conflicting reports of manual asymmetries with age. Performance differences in the Grooved Pegboard place task indicate left handers may display a shift towards right handedness in some, but not all cases. Summarizing, this study supports age-related differences in planning and control processes in a familiar task, and changes in manual asymmetries with age in left handers.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

How the mode of action affects evidence of planning and movement kinematics in aging: End‐state comfort in older adults

Scharoun

Gonzalez

Roy

et al. 2015

Developmental Psychobiology

Self Cite

View full text Add to dashboard Cite

show abstract

Comparison between Single-touch and Multi-touch Interaction for Older People

Lepicard

Vigouroux

2012

Lecture Notes in Computer Science

View full text Add to dashboard Cite

Tactile impairments cannot explain the effect of age on a grasp and lift task

Cole¹,

Rotella²,

Harper³

1998

Experimental Brain Research

View full text Add to dashboard Cite

This experiment addressed the often-posed theory that age-related declines in manual dexterity result from diminished tactile function. We measured the time 'young' subjects (n=33; mean=45 years) and 'old' subjects (n=33; mean=74 years) needed to grip (thumb and index finger), lift, and transport a small metal sphere when vision was permitted and when blindfolded. Subjects began each trial by reaching for the sphere and were instructed to complete the entire task quickly. In the absence of visual information, placement of the finger and thumb for a secure grip and lift cannot be performed efficiently without tactile information. If age-related tactile changes are functionally significant for this task, then without visual information the 'old' group should show a disproportionate increase in the duration of the grip and lift phase of the task compared to the 'young' group. Perceptual thresholds for tactile pressure stimuli (Semmes-Weinstein filaments) confirmed well-known age-related changes. Age and vision effects were manifest mainly during the grip-lift phase (time from object contact to lift-off from its support surface), with the expected finding that the 'old' group required more time than 'young' group, regardless of visual condition. The main finding was that the 'grip-lift' duration in the 'no-vision' condition was about twice the duration observed in the 'vision' condition for both age groups (ratios of 2.1 and 2.3 for 'young' and 'old', respectively). This similar relative slowing for the two groups fails to support the hypothesis that old adults' ability to grip and lift the object was limited by changes in the availability or use of tactile information.

show abstract

Constraints on Prehension: A Framework for Studying the Effects of Aging

Cited by 11 publications

References 97 publications

How the mode of action affects evidence of planning and movement kinematics in aging: End‐state comfort in older adults

How the mode of action affects evidence of planning and movement kinematics in aging: End‐state comfort in older adults

Comparison between Single-touch and Multi-touch Interaction for Older People

Tactile impairments cannot explain the effect of age on a grasp and lift task

Contact Info

Product

Resources

About