P1-16-03. The influence of motor imagery and practice time on the accuracy and excitability of spinal anterior horn cells

Fukumoto, Yuki; Suzuki, Toshiaki; Iwatsuki, Hiroyasu

doi:10.1016/j.clinph.2019.06.182

Cited by 1 publication

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“…Second, the increase in excessive excitability of spinal motor neurons was suppressed because of the vivid MI 36 . Participants who improved their precision pinch force control skills by performing MI performed vivid MI, which suppressed the increase in excessive excitability of spinal motor neurons 28 . The excitability of spinal motor neurons may not increase during MI due to conflicting various, and two possible patterns may emerge: the imagery may not be smooth or it may be vivid.…”

Section: Discussionmentioning

confidence: 99%

“…Additionally, increased excitability of spinal motor neurons during MI was not always associated with improved precision pinch force control skills. Individuals who had improved precision pinch force control skills performed vivid MI, leading to suppression of the excessive increase in spinal motor neuron excitability 28 . In addition, we hypothesized that the excitability of spinal motor neurons does not always increase during KMI, as vividness imagery is performed when relevant numerical information is provided.…”

Section: Differences In Motor Imagery Strategy Change Behavioral Outcomementioning

confidence: 99%

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Differences in motor imagery strategy change behavioral outcome

Fukumoto

Todo²,

Bunno³

et al. 2022

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Kinesthetic motor imagery (KMI) involves imagining the feeling and experience of movements. We examined the effects of KMI, number visualizing, and KMI with number visualizing on the excitability of spinal motor neurons and a behavioral outcome measure in a pinch force task. Healthy participants (13 men and 8 women; mean age: 24.8 ± 5.5 years) were recruited. We compared the F-waves of the left thenar muscles after stimulating the left median nerve at the wrist during each motor imagery condition after a practice session. The KMI condition consisted of imagining muscle contraction, the number visualizing condition consisted of imagining the pinch force increasing numerically, and the KMI with number visualizing consisted of alternating between the KMI and imagining the pinch force increasing numerically. Before and after motor imagery, the time required to adjust to the target pinch force was compared. The time required to adjust the pinch force was shorter in the KMI with number visualizing condition than in the KMI and number visualizing conditions. There was no difference in the F/M amplitude ratio between each MI strategy condition, indicating the excitability of spinal motor neurons. Numerical information helped to improve the ability of participants to perform KMI.

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Section: Discussionmentioning

confidence: 99%

Section: Differences In Motor Imagery Strategy Change Behavioral Outcomementioning

confidence: 99%