A prolonged motor imagery session alter imagined and actual movement durations: Potential implications for neurorehabilitation

Rozand, Vianney; Lebon, Florent; Stapley, Paul J.; Papaxanthis, Charalambos; Lepers, Romuald

doi:10.1016/j.bbr.2015.09.036

Cited by 79 publications

(53 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, repetitive MI led to participants having difficulties in maintaining focused attention on imagined movement. Repetitive MI of pointing tasks did significantly extend the duration of actual performance [40]. Also, in regard to influence of repetitive MI on the central nervous system excitability, repetitive MI of handgrip movements significantly decreased the MEPs amplitude compared with that at rest [41].…”

Section: Discussionmentioning

confidence: 81%

The Effect of Motor Imagery on Spinal Motor Neuron Excitability and Its Clinical Use in Physical Therapy

Bunno¹,

Fukumoto²,

Todo³

et al. 2017

Neurological Physical Therapy

View full text Add to dashboard Cite

We investigated the influence of the imagined muscle contraction strengths on spinal motor neuron excitability in healthy volunteers. F-wave was used for assessing spinal motor excitability. The F-waves during motor imagery (MI) under 10, 30, 50, 70, and 100% maximal voluntary contractions (MVCs) were compared. Furthermore, we investigated changes of the F-waves during motor imagery for 5min. Motor imagery under 10, 30, 50, 70, and 100% maximal voluntary contractions can increase spinal motor neuron excitability. However, the imagined muscle contraction strengths were not involved in changes of spinal motor neuron excitability. Additionally, spinal motor neuron excitability after 5min from onset of motor imagery returned to the rest level. Thus, in clinical use of motor imagery, slightly imagined muscle contraction strength is enough for facilitating spinal motor neuron excitability. Also, duration of motor imagery needs to be considered.

show abstract

Section: Discussionmentioning

confidence: 81%

The Effect of Motor Imagery on Spinal Motor Neuron Excitability and Its Clinical Use in Physical Therapy

Bunno¹,

Fukumoto²,

Todo³

et al. 2017

Neurological Physical Therapy

View full text Add to dashboard Cite

show abstract

“…The trials in each run (motor imagery or motor execution) contained an equal number of all 5 tasks presented in a pseudorandomized order, without allowing the same task to appear more than twice in a row within each run. Motor execution was interspersed between sections of motor imagery in order to improve the subject's ability to imagine performing the task, both as a reminder of the kinesthetics involved in the actual movement and to reduce fatigue caused by repeated motor imagery trials [62]. A total of 150 motor imagery and 60 motor execution trials were collected for each subject.…”

Section: Methodsmentioning

confidence: 99%

Comparison of Brain Activation during Motor Imagery and Motor Movement Using fNIRS

Batula

Mark

Kim

et al. 2017

Computational Intelligence and Neuroscience

118

View full text Add to dashboard Cite

Motor-activity-related mental tasks are widely adopted for brain-computer interfaces (BCIs) as they are a natural extension of movement intention, requiring no training to evoke brain activity. The ideal BCI aims to eliminate neuromuscular movement, making motor imagery tasks, or imagined actions with no muscle movement, good candidates. This study explores cortical activation differences between motor imagery and motor execution for both upper and lower limbs using functional near-infrared spectroscopy (fNIRS). Four simple finger- or toe-tapping tasks (left hand, right hand, left foot, and right foot) were performed with both motor imagery and motor execution and compared to resting state. Significant activation was found during all four motor imagery tasks, indicating that they can be detected via fNIRS. Motor execution produced higher activation levels, a faster response, and a different spatial distribution compared to motor imagery, which should be taken into account when designing an imagery-based BCI. When comparing left versus right, upper limb tasks are the most clearly distinguishable, particularly during motor execution. Left and right lower limb activation patterns were found to be highly similar during both imagery and execution, indicating that higher resolution imaging, advanced signal processing, or improved subject training may be required to reliably distinguish them.

show abstract

“…Repetitive MI of a handgrip movement decreases the corticospinal excitability [48]. Rozand et al [49] also demonstrated that participants felt difficulty to maintain their focus on imagined movement due to mental fatigue. Therefore, mental fatigue caused by sustained mental activity may affect the excitability of spinal motor neurons.…”

Section: Discussionmentioning

confidence: 99%

Motor Imagery for Neurorehabilitation: The F-Wave Study

Bunno¹

2020

Somatosensory and Motor Research

View full text Add to dashboard Cite

The immediate enrollment in rehabilitation program and facilitation of the excitability of spinal motor neurons are very important for post-stroke patients. We previously suggested that persistence and the F/M amplitude ratio, indicator of the excitability of spinal motor neurons, were significantly increased during MI. Thus, MI has a greater effect on the excitability of spinal motor neurons. We also indicated that the imagined muscle contraction strength may not affect the excitability of spinal motor neurons. Further, kinesthetic imagery can more facilitate the excitability of spinal motor neurons. However, longer duration of MI may not affect the excitability of spinal motor neurons. Therefore, slight imagined muscle contraction strength may be sufficient to facilitate the excitability of spinal motor neurons, and duration and strategy of imagery should be considered in neurorehabilitation.

show abstract

A prolonged motor imagery session alter imagined and actual movement durations: Potential implications for neurorehabilitation

Cited by 79 publications

References 40 publications

The Effect of Motor Imagery on Spinal Motor Neuron Excitability and Its Clinical Use in Physical Therapy

The Effect of Motor Imagery on Spinal Motor Neuron Excitability and Its Clinical Use in Physical Therapy

Comparison of Brain Activation during Motor Imagery and Motor Movement Using fNIRS

Motor Imagery for Neurorehabilitation: The F-Wave Study

Contact Info

Product

Resources

About