Potential Motor Benefits of Visual Feedback of Error Reduction for Older Adults

Hwang, Ing Shiou; Hu, Chia-Ling; Huang, Wei Min; Tsai, Yi-Ying; Chen, Yi-Ching

doi:10.1123/japa.2019-0405

Cited by 3 publications

(10 citation statements)

References 46 publications

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“…However, any manipulation of the error gain of visual EA should be done pragmatically. As visual EA is expected to enhance visual-spatial attention during training, it could simultaneously increase the cognitive load and performance stress during postural training 20 . In addition, excessively large error amplification could enhance perceptual conflicts among the visual, vestibular and proprioception inputs, with the result that the subjects could fail to react to performance loss and realize the error causes 13 .…”

Section: Discussionmentioning

confidence: 99%

“…If EA works to expedite balance training in older adults, it should provide fast cortical adaptability to balance constraints, overriding the potential negative factors of biased visual feedback that impede learning with aging (such as perceptual conflicts 19 and declines in resource capacity 20 ). Balance training could change one's postural synergy via whole-brain reorganization 21 .…”

Section: Introductionmentioning

confidence: 99%

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Quick balance skill improvement after short-term training with error amplification feedback for older adults

et al. 2023

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This study investigated behavioral and cortical mechanisms for short-term postural training with error amplification (EA) feedback in the elderly. Thirty-six elderly subjects (65.7 ± 2.2 years) were grouped (control and EA, n = 18) for training in stabilometer balance under visual guidance. During the training session (8 training rounds of 60 s in Day 2), the EA group received visual feedback that magnified errors to twice the real size, whereas the control group received visual feedback that displayed real errors. Scalp EEG and kinematic data of the stabilometer plate and ankle joint were recorded in the pre-test (Day 1) and post-test (Day 3). The EA group (−46.5 ± 4.7%) exhibited greater post-training error reduction than that of the control group (−27.1 ± 4.0%)(p = 0.020), together with a greater decline in kinematic coupling between the stabilometer plate and ankle joint (EA: −26.6 ± 4.8%, control: 2.3 ± 8.6%, p = 0.023). In contrast to the control group, the EA group manifested greater reductions in mean phase-lag index (PLI) connectivity in the theta (4–7 Hz)(p = 0.011) and alpha (8–12 Hz) (p = 0.027) bands. Only the EA group showed post-training declines in the mean PLI in the theta and alpha bands. Minimal spanning tree analysis revealed that EA-based training led to increases in the diameter (p = 0.002) and average eccentricity (p = 0.004) of the theta band for enhanced performance monitoring and reduction in the leaf fraction (p = 0.030) of the alpha band for postural response with enhanced automaticity. In conclusion, short-term EA training optimizes balance skill, favoring multi-segment coordination for the elderly, which is linked to more sophisticated error monitoring with less attentive control over the stabilometer stance.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quick balance skill improvement after short-term training with error amplification feedback for older adults

et al. 2023

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“…The particular forms of contraction were designed for EMG decomposition using a previous proof-of-algorithm. In addition, the bi-rhythmic force task was expected to add task difficulty and performance stress, unlike the static and mono-rhythmic force tasks used in the previous studies, which manipulated the error size in the visual feedback ( Chen et al, 2017a ; Chen et al, 2017b ; Chen et al, 2017c ; Hwang et al, 2020 ). On Day 2, the practice session contained 15 contraction trials of the same task scheme used on Day 1.…”

Section: Methodsmentioning

confidence: 99%

“…To our knowledge, no previous studies have investigated the effect of visuomotor training with ER for young adults from the aspects of force dynamics and motor unit behaviors. For virtual minimization of execution errors, ER could reinforce correct schemas for less performance stress in the initial skill acquisition ( Ong et al, 2010 ; Hwang et al, 2020 ). Hence, the subjects could be better motivated and thus achieve a superior learning effect after training ( Chiviacowsky and Wulf, 2007 ; Saemi et al, 2012 ).…”

Section: Introductionmentioning

confidence: 99%

“…Namely, the participants learned to couple a force trajectory to a target signal of combined sinusoidal waves of two different frequencies, with half of participants receiving ER feedback. We hypothesized that ER training would result in a better performance than would training with feedback with no reduction in errors, based on our previous results that showed potential immediate effect of visual ER for older adults ( Hwang et al, 2020 ). Regarding the potential benefit of visual ER, ER training was hypothesized to increase coherent discharge at the target frequencies and reduce the discharge variability of motor units for young adults during a bi-rhythmic force task.…”

Section: Introductionmentioning

confidence: 99%

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Failure to improve task performance after visuomotor training with error reduction feedback for young adults

Lin

Chen²,

Chang³

et al. 2023

Front. Physiol.

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Visual feedback that reinforces accurate movements may motivate skill acquisition by promoting self-confidence. This study investigated neuromuscular adaptations to visuomotor training with visual feedback with virtual error reduction. Twenty-eight young adults (24.6 ± 1.6 years) were assigned to error reduction (ER) (n = 14) and control (n = 14) groups to train on a bi-rhythmic force task. The ER group received visual feedback and the displayed errors were 50% of the real errors in size. The control group was trained with visual feedback with no reduction in errors. Training-related differences in task accuracy, force behaviors, and motor unit discharge were contrasted between the two groups. The tracking error of the control group progressively declined, whereas the tracking error of the ER group was not evidently reduced in the practice sessions. In the post-test, only the control group exhibited significant task improvements with smaller error size (p = .015) and force enhancement at the target frequencies (p = .001). The motor unit discharge of the control group was training-modulated, as indicated by a reduction of the mean inter-spike interval (p = .018) and smaller low-frequency discharge fluctuations (p = .017) with enhanced firing at the target frequencies of the force task (p = .002). In contrast, the ER group showed no training-related modulation of motor unit behaviors. In conclusion, for young adults, ER feedback does not induce neuromuscular adaptations to the trained visuomotor task, which is conceptually attributable to intrinsic error dead-zones.

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Effects of Error Modulation-Based Visual and Haptic Feedback Fusion Strategies on Motor Learning and Motivation

Jing-yan

et al. 2023

Applied Bionics and Biomechanics

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Visual or haptic feedback based on error modulation has been used to improve the effect of robot-assisted rehabilitation training. However, there are several investigations on the effects of error modulation-based visual and haptic feedback fusion strategies on motor learning and motivation. To observe the influence of different feedback fusion strategies on motor learning and motivation, a parallel controlled study was conducted, dividing 30 healthy subjects into three groups with similar skill levels. The no error modulation group received visual and haptic feedback without error modulation; the visual amplification haptic reduction group received visual error amplification combined with haptic error reduction, and the visual reduction haptic amplification (VRHA) group received visual error reduction combined with haptic error amplification. Each subject implemented a trajectory-tracking task with an upper limb rehabilitation robot. They went through baseline, training, assessment, and generalization tests and completed 340 consecutive tracking movements. To evaluate motor learning and motivation, the average tracking error, the root mean square (RMS) of surface electromyography (sEMG) signals, and the intrinsic motivation inventory scale were all examined. In the assessment tests, the average tracking error was significantly decreased in all three groups. In particular, the VRHA group had a larger reduction in average tracking error in the generalization test, lower RMS of sEMG signals both in the assessment and generalization tests and higher perceived competence in the assessment tests. The VRHA fusion strategy significantly improved the subjects’ motor learning and transfer ability, decreased muscle activation, and increased motor learning motivation. These findings may provide some new insights for multisensory feedback fusion technology in the application of rehabilitation robots.

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Potential Motor Benefits of Visual Feedback of Error Reduction for Older Adults

Cited by 3 publications

References 46 publications

Quick balance skill improvement after short-term training with error amplification feedback for older adults

Quick balance skill improvement after short-term training with error amplification feedback for older adults

Failure to improve task performance after visuomotor training with error reduction feedback for young adults

Effects of Error Modulation-Based Visual and Haptic Feedback Fusion Strategies on Motor Learning and Motivation

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