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Jian C, Deng L, Liu H, Yan T, Wang X, Song R. Modulating and restoring inter-muscular coordination in stroke patients using two-dimensional myoelectric computer interface: a cross-sectional and longitudinal study. J Neural Eng 2021; 18. [DOI: 10.1088/1741-2552/abc29a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 10/19/2020] [Indexed: 12/11/2022]
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Suzuki T, Suzuki M, Kanemura N, Hamaguchi T. Differential Effect of Visual and Proprioceptive Stimulation on Corticospinal Output for Reciprocal Muscles. Front Integr Neurosci 2019; 13:63. [PMID: 31736723 PMCID: PMC6829117 DOI: 10.3389/fnint.2019.00063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 10/15/2019] [Indexed: 11/13/2022] Open
Abstract
This study investigated the corticospinal excitability of reciprocal muscles during tasks involving sensory difference between proprioceptive and visual inputs. Participants were instructed to relax their muscles and to observe a screen during vibratory stimulation. A video screen was placed on the board covering the right hand and forearm. Participants were randomly tested in four conditions: resting, control, static, and dynamic. The resting condition involved showing a black screen, the control condition, a mosaic patterned static videoclip; the static condition, a static videoclip of wrist flexion 0°; and the dynamic condition, a videoclip that corresponded to each participant's closely-matched illusory wrist flexion angle and speed by vibration. Vibratory stimulation (frequency 80 Hz and duration 4 s) was applied to the distal tendon of the dominant right extensor carpi radialis (ECR) using a tendon vibrator in the control, static, and dynamic conditions. Four seconds after the vibratory stimulation (end of vibration), the primary motor cortex at the midpoint between the centers of gravity of the flexor carpi radialis (FCR) and ECR muscles was stimulated by transcranial magnetic stimulation (TMS). The ECR motor evoked potential (MEP) amplitudes significantly increased in the control condition compared to the resting condition, whereas the FCR MEP amplitudes did not change between the resting and control conditions. In addition, the ECR MEP amplitudes significantly increased in the static condition compared to the dynamic condition. However, the FCR MEP amplitudes significantly increased in the dynamic condition compared to the static condition. These results imply that the difference between visuo-proprioceptive information had an effect on corticospinal excitability for the muscle. In conclusion, we found that proprioceptive and visual information differentially altered the corticospinal excitability of reciprocal muscles.
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Affiliation(s)
- Takako Suzuki
- School of Health Sciences, Saitama Prefectural University, Saitama, Japan
| | - Makoto Suzuki
- Department of Rehabilitation, Faculty of Health Sciences, Tokyo Kasei University, Saitama, Japan
| | - Naohiko Kanemura
- School of Health Sciences, Saitama Prefectural University, Saitama, Japan
| | - Toyohiro Hamaguchi
- School of Health Sciences, Saitama Prefectural University, Saitama, Japan
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Okuyama K, Ogura M, Kawakami M, Tsujimoto K, Okada K, Miwa K, Takahashi Y, Abe K, Tanabe S, Yamaguchi T, Liu M. Effect of the combination of motor imagery and electrical stimulation on upper extremity motor function in patients with chronic stroke: preliminary results. Ther Adv Neurol Disord 2018; 11:1756286418804785. [PMID: 30327684 PMCID: PMC6178123 DOI: 10.1177/1756286418804785] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 08/01/2018] [Indexed: 02/06/2023] Open
Abstract
Background The combination of motor imagery (MI) and afferent input with electrical stimulation (ES) enhances the excitability of the corticospinal tract compared with motor imagery alone or electrical stimulation alone. However, its therapeutic effect is unknown in patients with hemiparetic stroke. We performed a preliminary examination of the therapeutic effects of MI + ES on upper extremity (UE) motor function in patients with chronic stroke. Methods A total of 10 patients with chronic stroke demonstrating severe hemiparesis participated. The imagined task was extension of the affected finger. Peripheral nerve electrical stimulation was applied to the radial nerve at the spiral groove. MI + ES intervention was conducted for 10 days. UE motor function as assessed with the Fugl-Meyer assessment UE motor score (FMA-UE), the amount of the affected UE use in daily life as assessed with a Motor Activity Log (MAL-AOU), and the degree of hypertonia in flexor muscles as assessed with the Modified Ashworth Scale (MAS) were evaluated before and after intervention. To assess the change in spinal neural circuits, reciprocal inhibition between forearm extensor and flexor muscles with the H reflex conditioning-test paradigm at interstimulus intervals (ISIs) of 0, 20, and 100 ms were measured before and after intervention. Results UE motor function, the amount of the affected UE use, and muscle hypertonia in flexor muscles were significantly improved after MI + ES intervention (FMA-UE: p < 0.01, MAL-AOU: p < 0.01, MAS: p = 0.02). Neurophysiologically, the intervention induced restoration of reciprocal inhibition from the forearm extensor to the flexor muscles (ISI at 0 ms: p = 0.03, ISI at 20 ms: p = 0.03, ISI at 100 ms: p = 0.01). Conclusion MI + ES intervention was effective for improving UE motor function in patients with severe paralysis.
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Affiliation(s)
- Kohei Okuyama
- Department of Rehabilitation Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Miho Ogura
- Department of Rehabilitation Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Michiyuki Kawakami
- Department of Rehabilitation Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Kengo Tsujimoto
- Department of Rehabilitation Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kohsuke Okada
- Department of Rehabilitation Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kazuma Miwa
- Department of Rehabilitation Medicine, Keio University Hospital, Tokyo, Japan
| | - Yoko Takahashi
- Department of Rehabilitation Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kaoru Abe
- Department of Rehabilitation Medicine, Keio University Hospital, Tokyo, Japan
| | - Shigeo Tanabe
- Faculty of Rehabilitation, School of Health Sciences, Fujita Health University, Toyoake-shi, Aichi, Japan
| | - Tomofumi Yamaguchi
- Department of Physical Therapy, Yamagata Prefectural University of Health Sciences, Yamagata-shi, Yamagata, Japan
| | - Meigen Liu
- Department of Rehabilitation Medicine, Keio University School of Medicine, Tokyo, Japan
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Change in Reciprocal Inhibition of the Forearm with Motor Imagery among Patients with Chronic Stroke. Neural Plast 2018; 2018:3946367. [PMID: 29853844 PMCID: PMC5949151 DOI: 10.1155/2018/3946367] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 01/11/2018] [Accepted: 03/04/2018] [Indexed: 01/08/2023] Open
Abstract
We investigated cortically mediated changes in reciprocal inhibition (RI) following motor imagery (MI) in short- and long(er)-term periods. The goals of this study were (1) to describe RI during MI in patients with chronic stroke and (2) to examine the change in RI after MI-based brain-machine interface (BMI) training. Twenty-four chronic stroke patients participated in study 1. All patients imagined wrist extension on the affected side. RI from the extensor carpi radialis to the flexor carpi radialis (FCR) was assessed using a FCR H reflex conditioning-test paradigm. We calculated the "MI effect score on RI" (RI value during MI divided by that at rest) and compared that score according to lesion location. RI during MI showed a significant enhancement compared with RI at rest. The MI effect score on RI in the subcortical lesion group was significantly greater than that in the cortical lesion group. Eleven stroke patients participated in study 2. All patients performed BMI training for 10 days. The MI effect score on RI at a 20 ms interstimulus interval was significantly increased after BMI compared with baseline. In conclusion, mental practice with MI may induce plastic change in spinal reciprocal inhibitory circuits in patients with stroke.
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Suzuki M, Hamaguchi T, Matsunaga A. Nonequivalent modulation of corticospinal excitability by positive and negative outcomes. Brain Behav 2018; 8:e00862. [PMID: 29568678 PMCID: PMC5853642 DOI: 10.1002/brb3.862] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 08/25/2017] [Accepted: 09/25/2017] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE The difference between positive and negative outcomes is important in trial-and-error decision-making processes and affects corticospinal excitability. This study investigated corticospinal excitability during the performance of trial-and-error decision-making tasks with varying competing behavioral outcomes. METHODS Each trial began with one of five colored circles presented as a cue. Each color represented a different reward probability, ranging from 10% to 90%. The subjects were instructed to decide whether to perform wrist flexion in response to the cue. Two seconds after the presentation of the cue, a reward stimulus (picture of a coin) or penalty stimulus (mauve circle) was randomly presented to the subject. If the picture of a coin appeared, the subjects received the coin after the experiment if they had performed wrist flexion, but not if they had not performed wrist flexion. If a mauve circle appeared, a coin was deducted from the total reward if the subjects had performed wrist flexion, but not if they had not performed wrist flexion. One second after the reward or penalty stimulus, transcranial magnetic stimulation was delivered to the primary motor cortex at the midpoint between the centers of gravity of the flexor carpi radialis (agonist) and extensor carpi radialis (antagonist) muscles. RESULTS Cumulative wrist flexions were positively correlated with reward probabilities. Motor evoked potential (MEP) amplitudes in agonist muscles were significantly higher when wrist flexion incurred a penalty than when it incurred a reward, but there was no difference in the MEP amplitudes of antagonist muscles. CONCLUSION Positive and negative behavioral outcomes differentially altered behavior and corticospinal excitability, and unexpected penalties had a stronger effect on corticospinal excitability for agonist muscles.
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Affiliation(s)
- Makoto Suzuki
- School of Health Sciences Saitama Prefectural University Saitama Japan
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Suzuki M, Kirimoto H, Sugawara K, Oyama M, Yamada S, Yamamoto JI, Matsunaga A, Fukuda M, Onishi H. Motor cortex-evoked activity in reciprocal muscles is modulated by reward probability. PLoS One 2014; 9:e90773. [PMID: 24603644 PMCID: PMC3948372 DOI: 10.1371/journal.pone.0090773] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Accepted: 02/05/2014] [Indexed: 12/02/2022] Open
Abstract
Horizontal intracortical projections for agonist and antagonist muscles exist in the primary motor cortex (M1), and reward may induce a reinforcement of transmission efficiency of intracortical circuits. We investigated reward-induced change in M1 excitability for agonist and antagonist muscles. Participants were 8 healthy volunteers. Probabilistic reward tasks comprised 3 conditions of 30 trials each: 30 trials contained 10% reward, 30 trials contained 50% reward, and 30 trials contained 90% reward. Each trial began with a cue (red fixation cross), followed by blue circle for 1 s. The subjects were instructed to perform wrist flexion and press a button with the dorsal aspect of middle finger phalanx as quickly as possible in response to disappearance of the blue circle without looking at their hand or the button. Two seconds after the button press, reward/non-reward stimulus was randomly presented for 2-s duration. The reward stimulus was a picture of Japanese 10-yen coin, and each subject received monetary reward at the end of experiment. Subjects were not informed of the reward probabilities. We delivered transcranial magnetic stimulation of the left M1 at the midpoint between center of gravities of agonist flexor carpi radialis (FCR) and antagonist extensor carpi radialis (ECR) muscles at 2 s after the red fixation cross and 1 s after the reward/non-reward stimuli. Relative motor evoked potential (MEP) amplitudes at 2 s after the red fixation cross were significantly higher for 10% reward probability than for 90% reward probability, whereas relative MEP amplitudes at 1 s after reward/non-reward stimuli were significantly higher for 90% reward probability than for 10% and 50% reward probabilities. These results implied that reward could affect the horizontal intracortical projections in M1 for agonist and antagonist muscles, and M1 excitability including the reward-related circuit before and after reward stimulus could be differently altered by reward probability.
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Affiliation(s)
- Makoto Suzuki
- Graduate School of Medical Sciences, Kitasato University, Kanagawa, Japan
- * E-mail:
| | - Hikari Kirimoto
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata, Japan
| | - Kazuhiro Sugawara
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata, Japan
| | - Mineo Oyama
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata, Japan
| | - Sumio Yamada
- Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | | | - Atsuhiko Matsunaga
- Graduate School of Medical Sciences, Kitasato University, Kanagawa, Japan
| | - Michinari Fukuda
- Graduate School of Medical Sciences, Kitasato University, Kanagawa, Japan
| | - Hideaki Onishi
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata, Japan
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Suzuki M, Kirimoto H, Sugawara K, Watanabe M, Shimizu S, Ishizaka I, Yamada S, Matsunaga A, Fukuda M, Onishi H. Induction of cortical plasticity for reciprocal muscles by paired associative stimulation. Brain Behav 2014; 4:822-32. [PMID: 25365805 PMCID: PMC4212109 DOI: 10.1002/brb3.280] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 07/27/2014] [Accepted: 08/18/2014] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Paired associative stimulation (PAS) is widely used to induce plasticity in the human motor cortex. Although reciprocal inhibition of antagonist muscles plays a fundamental role in human movements, change in cortical circuits for reciprocal muscles by PAS is unknown. METHODS We investigated change in cortical plasticity for reciprocal muscles during PAS. PAS consisted of 200 pairs of peripheral electric stimulation of the right median nerve at the wrist at a frequency of 0.25 Hz followed by transcranial magnetic stimulation of the left M1 at the midpoint between the center of gravities of the flexor carpi radialis (FCR) and extensor carpi radialis (ECR) muscles. Measures of motor cortical excitability included resting motor threshold (RMT), GABAA-mediated short-interval intracortical inhibition (SICI), and GABAB-mediated long-interval intracortical inhibition (LICI). RESULTS Motor evoked potential amplitude-conditioned LICI for the FCR muscle was significantly decreased after PAS (P = 0.020), whereas that for the ECR muscle was significantly increased (P = 0.033). Changes in RMT and SICI for the FCR and ECR muscles were not significantly different before and after PAS. Corticospinal excitability for both reciprocal muscles was increased during PAS, but GABAB-mediated cortical inhibitory functions for the agonist and antagonist muscles were reciprocally altered after PAS. CONCLUSION These results implied that the cortical excitability for reciprocal muscles including GABAB-ergic inhibitory systems within human M1 could be differently altered by PAS.
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Affiliation(s)
- Makoto Suzuki
- Graduate School of Medical Sciences, Kitasato University Kanagawa, Japan ; School of Allied Health Sciences, Kitasato University Kanagawa, Japan
| | - Hikari Kirimoto
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare Niigata, Japan
| | - Kazuhiro Sugawara
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare Niigata, Japan
| | - Makoto Watanabe
- School of Allied Health Sciences, Kitasato University Kanagawa, Japan
| | - Shinobu Shimizu
- School of Allied Health Sciences, Kitasato University Kanagawa, Japan
| | - Ikuyo Ishizaka
- School of Allied Health Sciences, Kitasato University Kanagawa, Japan
| | - Sumio Yamada
- Department of Rehabilitation Science, Nagoya University Graduate School of Medicine Nagoya, Japan
| | - Atsuhiko Matsunaga
- Graduate School of Medical Sciences, Kitasato University Kanagawa, Japan ; School of Allied Health Sciences, Kitasato University Kanagawa, Japan
| | - Michinari Fukuda
- Graduate School of Medical Sciences, Kitasato University Kanagawa, Japan ; School of Allied Health Sciences, Kitasato University Kanagawa, Japan
| | - Hideaki Onishi
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare Niigata, Japan
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Suzuki M, Kirimoto H, Onishi H, Yamada S, Tamaki H, Maruyama A, Yamamoto JI. Reciprocal changes in input–output curves of motor evoked potentials while learning motor skills. Brain Res 2012; 1473:114-23. [DOI: 10.1016/j.brainres.2012.07.043] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Accepted: 07/23/2012] [Indexed: 11/15/2022]
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The need for lumbar-pelvic assessment in the resolution of chronic hamstring strain. J Bodyw Mov Ther 2009; 14:294-8. [PMID: 20538228 DOI: 10.1016/j.jbmt.2009.08.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2009] [Revised: 08/20/2009] [Accepted: 08/23/2009] [Indexed: 11/21/2022]
Abstract
A lumbar-pelvic assessment and treatment model based on a review of clinical and anatomical research is presented for consideration in the treatment of chronic hamstring strain. The origin of the biceps femoris muscle attaches to the pelvis at the ischial tuberosity and to the sacrum via the sacrotuberous ligament. The biomechanics of the sacroiliac joint and hip, along with lumbar-pelvic stability, therefore play a significant role in hamstring function. Pelvic asymmetry and/or excessive anterior tilt can lead to increased tension at the biceps origin and increase functional demands on the hamstring group by inhibiting its synergists. Joint proprioceptive mechanisms may play a significant role in re-establishing balance between agonists and antagonists. An appreciation of neuromuscular connections as well as overall lumbar-pelvic structural assessment is recommended in conjunction with lumbar-pelvic strengthening exercises to help resolve chronic hamstring strain.
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