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H.a.m. Seelen - One of the best experts on this subject based on the ideXlab platform.
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effects of Movement Imagery and electromyography triggered feedback on arm hand function in stroke patients in the subacute phase
Clinical Rehabilitation, 2007Co-Authors: B. Hemmen, H.a.m. SeelenAbstract:Objective: To investigate the effects of Movement Imagery-assisted electromyography (EMG)-triggered feedback (focused on paretic wrist dorsiflexors) on the arm—hand function of stroke patients.Design: Single-blinded, longitudinal, multicentre randomized controlled trial. Measurements were performed (on average) 54 days post stroke (baseline), three months later (post training) and at 12 months post baseline.Setting: Two rehabilitation centres.Subjects: Twenty-seven patients with a first-ever, ischaemic, subacute stroke.Interventions: A reference group received conventional electrostimulation, while the experimental group received arm—hand function training based on EMG-triggered feedback combined with Movement Imagery. Both groups were trained for three months, 5 days/week, 30 minutes/day, in addition to their therapy as usual.Main measures: Arm—hand function was evaluated using the upper extremity-related part of the Brunnstrom Fugl-Meyer test and the Action Research Arm test.Results: During training, Br...
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Effects of Movement Imagery and electromyography-triggered feedback on arm—hand function in stroke patients in the subacute phase
Clinical rehabilitation, 2007Co-Authors: B. Hemmen, H.a.m. SeelenAbstract:Objective: To investigate the effects of Movement Imagery-assisted electromyography (EMG)-triggered feedback (focused on paretic wrist dorsiflexors) on the arm—hand function of stroke patients.Design: Single-blinded, longitudinal, multicentre randomized controlled trial. Measurements were performed (on average) 54 days post stroke (baseline), three months later (post training) and at 12 months post baseline.Setting: Two rehabilitation centres.Subjects: Twenty-seven patients with a first-ever, ischaemic, subacute stroke.Interventions: A reference group received conventional electrostimulation, while the experimental group received arm—hand function training based on EMG-triggered feedback combined with Movement Imagery. Both groups were trained for three months, 5 days/week, 30 minutes/day, in addition to their therapy as usual.Main measures: Arm—hand function was evaluated using the upper extremity-related part of the Brunnstrom Fugl-Meyer test and the Action Research Arm test.Results: During training, Br...
Ryusuke Kakigi - One of the best experts on this subject based on the ideXlab platform.
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Mechanisms of Differences in Gating Effects on Short- and Long-Latency Somatosensory Evoked Potentials Relating to Movement
Brain Topography, 2003Co-Authors: Hiroki Nakata, Koji Inui, Toshiaki Wasaka, Yoshiaki Nishihira, Ryusuke KakigiAbstract:We investigated the mechanisms underlying the differences in gating effects on short- and long-latency somatosensory evoked potentials (SEPs) relating to Movement. SEPs were recorded in normal subjects for 6 different tasks in Experiment 1: Control, Movement, Distraction, Attention, Movement during Distraction and Movement during Attention, and for 4 different tasks in Experiment 2: Control, Passive Movement, Contralateral Movement and Movement Imagery. The amplitudes of short-latency SEPs were significantly reduced by active and passive Movement of the stimulated hand, but long-latency SEPs (N140-P200) were significantly enhanced by active Movement of the stimulated hand. Attention, Distraction, Contralateral Movement and Movement Imagery did not affect the amplitudes of SEPs. The degree of enhancement of long-latency SEPs by active Movement was greater than that by active Movement with Attention or Distraction. Gating effects on long-latency SEPs were different from those on short-latency SEPs. Since this effect was not related to Attention/Distraction, Passive Movement, Movement Imagery or Movement of another site, it is probably due to specific centrifugal effects, which are different from more direct gating effects on short-latency components. This study showed the difference in gating effects on somatosensory perception depending on time periods following stimulation, which may indicate an interaction between motor and somatosensory cortex.
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effects of Movement and Movement Imagery on somatosensory evoked magnetic fields following posterior tibial nerve stimulation
Cognitive Brain Research, 1997Co-Authors: Ryusuke Kakigi, Motoko Shimojo, Minoru Hoshiyama, Sachiko Koyama, Shoko Watanabe, Daisuke Naka, Hiroyuki Suzuki, Akinori NakamuraAbstract:We examined the “gating” effects caused by active and passive Movements of toes and by “Movement Imagery” (mental moving of the toe without actual Movements) on somatosensory evoked magnetic fields (SEFs) following stimulation of the posterior tibial nerve in normal subjects. Active and passive Movements significantly attenuated the short- and middle-latency cortical components (P<0.001) with no latency change, and the effects of the active Movements were larger than those of the passive Movements. In contrast, the subsequent long-latency component with a latency of about 100 ms was enhanced only by the active Movements. Therefore, both centrifugal and centripetal mechanisms should be considered. The gating effects by Movements on all components may occur in the primary sensory cortex (SI) in the hemisphere contralateral to the stimulated nerve, because all of the equivalent current dipoles (ECDs) of the components in the “control” and each “interference” waveform were located there. Active Movements of the toes contralateral to the stimulated nerve caused no significant gating effect. The short-latency components were not consistently changed by “Movement Imagery”, but the middle- and long-latency components were enhanced. Their ECDs were located in the SI contralateral to the stimulated nerve and in the SII in bilateral hemispheres. Therefore, we speculated that brain responses to somatosensory stimulation, particularly components generated in SII, were affected by volitional changes. © 1997 Elsevier Science B.V. All rights reserved.
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Effects of Movement and Movement Imagery on somatosensory evoked magnetic fields following posterior tibial nerve stimulation.
Brain research. Cognitive brain research, 1997Co-Authors: Ryusuke Kakigi, Motoko Shimojo, Minoru Hoshiyama, Sachiko Koyama, Shoko Watanabe, Daisuke Naka, Hiroyuki Suzuki, Akinori NakamuraAbstract:We examined the “gating” effects caused by active and passive Movements of toes and by “Movement Imagery” (mental moving of the toe without actual Movements) on somatosensory evoked magnetic fields (SEFs) following stimulation of the posterior tibial nerve in normal subjects. Active and passive Movements significantly attenuated the short- and middle-latency cortical components (P
B. Hemmen - One of the best experts on this subject based on the ideXlab platform.
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effects of Movement Imagery and electromyography triggered feedback on arm hand function in stroke patients in the subacute phase
Clinical Rehabilitation, 2007Co-Authors: B. Hemmen, H.a.m. SeelenAbstract:Objective: To investigate the effects of Movement Imagery-assisted electromyography (EMG)-triggered feedback (focused on paretic wrist dorsiflexors) on the arm—hand function of stroke patients.Design: Single-blinded, longitudinal, multicentre randomized controlled trial. Measurements were performed (on average) 54 days post stroke (baseline), three months later (post training) and at 12 months post baseline.Setting: Two rehabilitation centres.Subjects: Twenty-seven patients with a first-ever, ischaemic, subacute stroke.Interventions: A reference group received conventional electrostimulation, while the experimental group received arm—hand function training based on EMG-triggered feedback combined with Movement Imagery. Both groups were trained for three months, 5 days/week, 30 minutes/day, in addition to their therapy as usual.Main measures: Arm—hand function was evaluated using the upper extremity-related part of the Brunnstrom Fugl-Meyer test and the Action Research Arm test.Results: During training, Br...
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Effects of Movement Imagery and electromyography-triggered feedback on arm—hand function in stroke patients in the subacute phase
Clinical rehabilitation, 2007Co-Authors: B. Hemmen, H.a.m. SeelenAbstract:Objective: To investigate the effects of Movement Imagery-assisted electromyography (EMG)-triggered feedback (focused on paretic wrist dorsiflexors) on the arm—hand function of stroke patients.Design: Single-blinded, longitudinal, multicentre randomized controlled trial. Measurements were performed (on average) 54 days post stroke (baseline), three months later (post training) and at 12 months post baseline.Setting: Two rehabilitation centres.Subjects: Twenty-seven patients with a first-ever, ischaemic, subacute stroke.Interventions: A reference group received conventional electrostimulation, while the experimental group received arm—hand function training based on EMG-triggered feedback combined with Movement Imagery. Both groups were trained for three months, 5 days/week, 30 minutes/day, in addition to their therapy as usual.Main measures: Arm—hand function was evaluated using the upper extremity-related part of the Brunnstrom Fugl-Meyer test and the Action Research Arm test.Results: During training, Br...
Anthony Singhal - One of the best experts on this subject based on the ideXlab platform.
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Prototypical actions with objects are more easily imagined than atypical actions
2018Co-Authors: Christopher R Madan, Anthony SinghalAbstract:Tool use is an important facet of everyday life, though sometimes it is necessary to use tools in ways that do not fit within their typical functions. Here we asked participants to imagine characters using objects based on instructions that fit the prototypical actions for the object or were atypical in a novel object-action Imagery task. Atypical action instructions either described sensible, substitute uses of the object, or actions that were bizarre but possible. Participants were better able to imagine the prototypical than atypical actions, but no effect of bizarreness was found. We additionally assessed inter-individual differences in Movement Imagery ability using two objective tests. Performance in the object-action Imagery task correlated with the Movement Imagery tests, providing a link between motor simulations and mental Imagery ability.
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Handedness effects of imagined fine motor Movements
Laterality, 2017Co-Authors: Christopher M. Donoff, Christopher R Madan, Anthony SinghalAbstract:Previous studies of Movement Imagery have found inter-individual differences in the ability to imagine whole-body Movements. The majority of these studies have used subjective scales to measure Imagery ability, which may be confounded by other factors related to effort. Madan and Singhal [2013. Introducing TAMI: An objective test of ability in Movement Imagery. Journal of Motor Behavior, 45(2), 153–166. doi:10.1080/00222895.2013.763764] developed the Test of Ability in Movement Imagery (TAMI) to address these confounds by using a multiple-choice format with objectively correct responses. Here we developed a novel Movement Imagery questionnaire targeted at assessing Movement Imagery of fine-motor hand Movements. This questionnaire included two subscales: Functionally-involved Movement (i.e., tool-related) and Isolated Movement (i.e., hand-only). Hand-dominance effects were observed, such that right-handed participants were significantly better at responding to right-hand questions compared to left-hand questions for both Imagery types. A stronger handedness effect was observed for Functionally-involved Movement Imagery, and it did not correlate with the Edinburgh Handedness Inventory. We propose that the Functionally-involved Movement Imagery subscale provides an objective hand Imagery test that induces egocentric spatial processing and a greater involvement of memory processes, potentially providing a better skill-based measure of handedness.
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No sex differences in the TAMI
Cognitive Processing, 2015Co-Authors: Christopher R Madan, Anthony SinghalAbstract:The Test of Ability in Movement Imagery (TAMI; Madan and Singhal in J Mot Behav 45:153–166, 2013 ) has recently been developed as an objective measure for evaluating individual ability in Movement Imagery. Other tests of Imagery have reported sex differences, including the mental rotations test (MRT) and the Vividness of Movement Imagery Questionnaire (VMIQ). However, some have attributed these observed sex differences to other processes, such as difference in spatial abilities and confidence. Here, we tested for sex differences in the TAMI in a large sample of young adults ( N = 246). In the same sample, we also administered a modified version of the MRT that included both block configurations and human figures and the VMIQ2. This modified MRT was used, as the Imagery processes involved in the TAMI may be more similar to those involved in the rotations of human figures. While strong sex differences were found in both subscales of the modified MRT, no sex differences were observed in the TAMI.
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Improving the TAMI for use with athletes
Journal of sports sciences, 2014Co-Authors: Christopher R Madan, Anthony SinghalAbstract:AbstractAthletes have been shown to have greater Movement Imagery abilities than non-athletes. However, since these differences were observed using questionnaires where participants subjectively judged the vividness of performing imagined Movements, it is possible that responses could be biased by other factors such as social desirability. One possible solution is to use an objective test, such as the Test of Ability in Movement Imagery (TAMI; Madan, C. R., & Singhal, A. (2013). Introducing TAMI: An objective test of ability in Movement Imagery. Journal of Motor Behavior, 45, 153–166.). Unfortunately, young adults perform relatively well on the TAMI, leaving little room for statistical sensitivity in observing higher scores. Here we propose an alternate scoring method for the TAMI that resolves this limitation by weighing items according to their difficulty. We apply this scoring method to existing data and show that this improves the TAMI’s selectivity to measuring ability in Movement Imagery, rather tha...
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introducing tami an objective test of ability in Movement Imagery
Journal of Motor Behavior, 2013Co-Authors: Christopher R Madan, Anthony SinghalAbstract:Individual ability in mental Imagery varies widely across individuals, leading to the development of questionnaires to evaluate mental Imagery. Within the domain of Movement Imagery, questionnaires have previously relied on subjective ratings of vividness, which may be influenced by additional factors such as motor skill confidence, success of imagined actions, and social desirability. These additional factors are of particular importance when making comparisons between samples from different populations, such as athletes versus nonathletes and patients versus healthy individuals. The authors present a novel test of ability in Movement Imagery (Test of Ability in Movement Imagery [TAMI]) that relies on objective measures and requires participants to make explicit imagined Movements from an external perspective. In Study 1, the authors present evidence that young adults perform at a mid-level on the TAMI. In Study 2, they further compare performance on the TAMI with a battery of other measures to better characterize the TAMI by determining its similarities and differences with existing measures. The findings of both studies indicate the TAMI to be a valid and reliable measure of Movement Imagery ability. The authors additionally discuss future applications of the TAMI to athletic and clinical research.
Kyungkyu Park - One of the best experts on this subject based on the ideXlab platform.
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Movement Imagery related lateralization of event related de synchronization erd ers motor Imagery duration effects
Clinical Neurophysiology, 2011Co-Authors: Yongwoong Jeon, Kyungkyu ParkAbstract:Abstract Objective To investigate Movement Imagery-related lateralization of event-related (de)synchronization (ERD/ERS) during two motor-Imagery tasks with varying Movement duration (brief versus continuous). Methods Twelve subjects performed or kinesthetically imagined the indicated Movement (left or right hand Movement) for 1 s (brief) or 5 s (continuous) while electroencephalograms (EEGs) were recorded using 16 electrodes covering the sensorimotor cortex of the brain according to the modified 10–20 system. Results Significant hemispheric differences were found between contralateral and ipsilateral area in mu ERD, mu ERS and beta ERD during both brief and continuous conditions, showing contralateral dominance of mu and beta ERD and ipsilateral dominance of mu ERS. Beta ERS showed a significant ipsilateral dominance only in the brief condition. Movement Imagery duration influenced the lateralization of mu ERD, beta ERD, and beta ERS, but not mu ERS. Conclusions The results of this study will aid in clarifying Movement-related lateralization in association with Imagery tasks under varying Movement duration. Significance For designing an EEG-based brain–computer interface (BCI) for people with severe neuromuscular impairments, Movement Imagery-related lateralization can play a key role in utilizing motor-Imagery tasks as a control or communication strategy.
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Movement Imagery-related lateralization of event-related (de)synchronization (ERD/ERS): Motor-Imagery duration effects
Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology, 2010Co-Authors: Chang S. Nam, Yongwoong Jeon, Young-joo Kim, Insuk Lee, Kyungkyu ParkAbstract:Abstract Objective To investigate Movement Imagery-related lateralization of event-related (de)synchronization (ERD/ERS) during two motor-Imagery tasks with varying Movement duration (brief versus continuous). Methods Twelve subjects performed or kinesthetically imagined the indicated Movement (left or right hand Movement) for 1 s (brief) or 5 s (continuous) while electroencephalograms (EEGs) were recorded using 16 electrodes covering the sensorimotor cortex of the brain according to the modified 10–20 system. Results Significant hemispheric differences were found between contralateral and ipsilateral area in mu ERD, mu ERS and beta ERD during both brief and continuous conditions, showing contralateral dominance of mu and beta ERD and ipsilateral dominance of mu ERS. Beta ERS showed a significant ipsilateral dominance only in the brief condition. Movement Imagery duration influenced the lateralization of mu ERD, beta ERD, and beta ERS, but not mu ERS. Conclusions The results of this study will aid in clarifying Movement-related lateralization in association with Imagery tasks under varying Movement duration. Significance For designing an EEG-based brain–computer interface (BCI) for people with severe neuromuscular impairments, Movement Imagery-related lateralization can play a key role in utilizing motor-Imagery tasks as a control or communication strategy.