The effects of age on response time, accuracy, and shoulder/arm kinematics during hammering

Norheim, Kristoffer Larsen; Samani, Afshin; Madeleine, Pascal

doi:10.1016/j.apergo.2020.103157

Cited by 7 publications

(3 citation statements)

References 33 publications

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“…In conjunction with the changes in selection lag, it appears that all participants traded off moving towards and selecting the correct targets faster to maintain accuracy at higher visual complexity levels, consistent with the well-established speed-accuracy trade-off phenomenon 40–43 . However, the selection errors were greater in older adults than young adults, contradicting previously demonstrated parity between the two groups resulting from older adults using movement slowing as a compensatory mechanism to maintain accuracy 44–46 .…”

Section: Discussioncontrasting

confidence: 91%

Aging modulates the effects of scene complexity on visual search and target selection in virtual environments

Lachica

Kalkar

Finley

2023

Preprint

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Processing task-relevant visual information is important for the successful completion of many everyday tasks. Prior work demonstrated that aging is associated with increased susceptibility to distraction by salient stimuli. However, these studies often use simple stimuli and little is known about how aging influences visual attention in 3D environments that are more representative of real-world visual complexity. We asked young and older adults to complete a virtual reality-based visual search task with three levels of increasing visual complexity. As the visual complexity of the environment increased, all participants took longer to complete the task, in part because they increased the time spent re-fixating task-relevant objects and the time spent fixating task-irrelevant objects. We also found that older adults took longer to complete the task and spent more time re-fixating task-relevant objects and fixating task-irrelevant objects. In addition, we found that short-term and working memory capacities were related to multiple measures of performance in the visual search task. These results demonstrate the importance of assessing the effects of aging on the control of visual attention using tasks and environments that better capture features of the real world.

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Section: Discussioncontrasting

confidence: 91%

Aging modulates the effects of scene complexity on visual search and target selection in virtual environments

Lachica

Kalkar

Finley

2023

Preprint

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“…The integration of emerging technologies into work environment is a focal point for enhancing labor conditions [34], serving as assistive systems that streamline humanmachine interactions and augment the physical and cognitive capabilities of operators [35]. Emerging technologies that have been enhanced with the development of the industrial digitalization and Industry 4.0 like virtual reality (VR) and MOCAP encompass components such as inertial immersion units (IMUs), force sensors and surface electromyography (EMG) [36].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Prototyping of a Sit-to-Stand Assisting Device

Rea,

Ruggiu,

Ottaviano

2024

Machines

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Assistive and rehabilitation technologies deal with solutions aiming at sustaining or enhancing individual’s capabilities and autonomy, thereby improving their overall welfare. In the framework of devices developed for daily life activities, we focus our attention on Sit-to-Stand (STS) devices, by proposing an innovative solution based on a mechanism that has been synthesized, designed, built and tested as a prototype version for accomplishing the task. The developed mechatronic system serves the requested motions of standing and sitting, possessing the main features of compactness and customization for being embedded in chairs and conventional seats, according to a procedure that will be detailed in the paper. A simulation in a realistic scenario using a 3D model of an individual was carried out to size and verify the mechanical design and actuation. The mechatronic design of the system and its operations were reported using a laboratory prototype to show its engineering soundness and first experimental tests.

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“…Indeed, the precise evaluation of arm kinematics in manipulation tasks has been applied to the study of ergonomics in many previous works [1][2][3]. There is a large number of published studies that describe the kinematic analysis of human movement in a variety of working tasks, e.g., in sewing [4], hammering [5] or material handling [6]. On the other hand, applications to motor rehabilitation have been explored in robot-assisted contexts [7,8] or for the monitoring of patient movement [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Multisensory Evaluation of Muscle Activity and Human Manipulability during Upper Limb Motor Tasks

et al. 2023

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In this work, we evaluate the relationship between human manipulability indices obtained from motion sensing cameras and a variety of muscular factors extracted from surface electromyography (sEMG) signals from the upper limb during specific movements that include the shoulder, elbow and wrist joints. The results show specific links between upper limb movements and manipulability, revealing that extreme poses show less manipulability, i.e., when the arms are fully extended or fully flexed. However, there is not a clear correlation between the sEMG signals’ average activity and manipulability factors, which suggests that muscular activity is, at least, only indirectly related to human pose singularities. A possible means to infer these correlations, if any, would be the use of advanced deep learning techniques. We also analyze a set of EMG metrics that give insights into how muscular effort is distributed during the exercises. This set of metrics could be used to obtain good indicators for the quantitative evaluation of sequences of movements according to the milestones of a rehabilitation therapy or to plan more ergonomic and bearable movement phases in a working task.

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The effects of age on response time, accuracy, and shoulder/arm kinematics during hammering

Cited by 7 publications

References 33 publications

Aging modulates the effects of scene complexity on visual search and target selection in virtual environments

Aging modulates the effects of scene complexity on visual search and target selection in virtual environments

Synthesis and Prototyping of a Sit-to-Stand Assisting Device

Multisensory Evaluation of Muscle Activity and Human Manipulability during Upper Limb Motor Tasks

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