Muscular responses during motor imagery as a function of muscle contraction types

Guillot, Aymeric; Lebon, Florent; Rouffet, David; Champely, Stéphane; Doyon, Julien; Collet, Christian

doi:10.1016/j.ijpsycho.2007.05.009

Cited by 135 publications

(119 citation statements)

References 66 publications

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“…According to the simulation hypothesis, these similarities suggest that motor imagery involves a sequence of neural events similar to motor execution, except that an inhibition mechanism operates downstream along the efferent pathway, possibly at the brainstem or spinal level, to suppress overt movement (Bonnet et al, 1997;Jeannerod, 2006). If such an inhibition mechanism exists, it must be incomplete (Jeannerod, 1994), because motor imagery has been shown to produce subliminal EMG activity in the involved muscles (Guillot et al, 2007;Lebon et al, 2008), as well as tonic and phasic autonomic responses preparing the body for action (Calabrese et al, 2004;Collet et al 2013;Collet and Guillot, 2009;Decety et al 1991).…”

Section: Introductionmentioning

confidence: 99%

Incomplete inhibition of central postural commands during manual motor imagery

Boulton

Mitra

2015

Brain Research

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Imagined movements exhibit many of the behavioral and neurophysiological characteristics of executed actions. As a result, they are considered simulations of physical actions with an inhibition mechanism that suppresses overt movement. This inhibition is incomplete, as it does not block autonomic preparation, and it also does not effectively suppress postural adjustments planned in support of imagined movements. It has been suggested that a central inhibition command may fail to suppress postural adjustments because it may not have access to afference-based elaborations of the postural response that occur downstream of central motor planning.Here, we measured changes in the postural response associated with imagining manual reaching movements under varying levels of imagined loading of the arm. We also manipulated stance stability, and found that postural sway reduced with increased (imagined) arm loading when imagining reaching movements from the less stable stance. As there were no afferent signals associated with the loading constraint, these results suggest that postural adjustments can leak during motor imagery because the postural component of the central motor plan is itself not inhibited effectively.

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Section: Introductionmentioning

confidence: 99%

Incomplete inhibition of central postural commands during manual motor imagery

Boulton

Mitra

2015

Brain Research

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“…Several previous studies have suggested that mental training of a specific action without a corresponding motor output has mechanisms similar to underlying movement preparation and execution 22,23) . According to Guillot et al 9) , when subjects imaged various different type of muscle contraction, a corresponding muscle activation pattern was detected on electromyography. Second, the effect of mental training may be explained by cerebral and cerebellar plasticity.…”

Section: Discussionmentioning

confidence: 99%

“…In particular, balance dysfunction is a very important issue in the elderly. Numerous therapeutic interventions have been attempted in order to improve the postural control ability of elderly adults and various types of patients 6,8,9,30) . Our findings show that mental practice with motor imagery can provide an effective and safe training method for individuals with balance dysfunction.…”

Section: Discussionmentioning

confidence: 99%

“…Balance-related problems lead to considerable health problems and social incur services costs, because of the patient's dependence on basic functional activities 5) . In order to improve balance ability, many studies have adopted a wide range of training methods involving balance training with visual feedback, muscle strength training, plyometric, virtual reality, and mental training [6][7][8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

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Effect of Mental Training on the Balance Control Ability of Healthy Subjects

Choi

Nam³

et al. 2010

J Phys Ther Sci

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Abstract. [Purpose] This study investigated the effect of physical training with visual feedback and mental training with motor imagery on balance control ability.[Subjects] Twenty-one healthy adults (male/ female: 7/14, mean age: 19.8 ± 0.1 years) with no history of neurological or orthopedic problems were enrolled in this study. The subjects were randomly divided into a physical training group (PTG), a mental training group (MTG), and a control group (CG).[Methods] PTG and MTG performed a dynamic balance task with physical and mental training, respectively, in a 30-minute training session, 5 days a week for 3 weeks. The CG did not receive any training. The outcomes of postural balance were evaluated in terms of the performance time and sway length measured by a force platform. [Results] In the baseline test, the three groups showed similar demographic data, performance time, and sway length. The PTG and MTG showed a significant decrease in performance time, but neither group showed any significant change in sway length. There was no significant difference in the CG.[Conclusion] Our findings indicate that physical balance training with visual feedback as well as mental balance training with motor imagery is effective. Therefore, mental training could contribute to improving dynamic balance ability in a cost-effective home-based training program.

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“…It is known that during MI selective changes in EMG activity can occur that mirror those observed during overt movement (Guillot et al, 2007). It could be assumed that motor activity might have been present during the imagery tasks.…”

Section: Study Limitationsmentioning

confidence: 99%

Extension of mental preparation positively affects motor imagery as compared to motor execution: A functional near-infrared spectroscopy study

Holper

Scholkmann

Shalóm

et al. 2012

Cortex

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Motor imagery (MI) is widely used to study cognitive action control. Although, the neural simulation theory assumes that MI and motor execution (ME) share many common features, the extent of similarity and whether it spreads into the preparation phase is still under investigation. Here we asked, whether an extension of physiological mental preparation has a comparable effect on MI and ME. Data were recorded using wireless functional near-infrared spectroscopy (fNIRS) in a two-stage task design where subjects were cued with or without preparatory stimuli to either execute or imagine complex sequential thumb-finger tasks. The main finding is that the extended mental preparation has a significant positive effect on oxy-hemoglobin (∆[O(2)Hb]) in response to MI, which is proportionally larger as that found in response to ME. Furthermore, fNIRS was capable to discriminate within each task whether it was preceded by preparatory stimuli or not. Transition from mental preparation to actual performance (ME or MI) was reflected by a dip of the fNIRS signal presumably related to underlying cortical processes changing between preparation and task performance. Statistically significant main effects of 'Preparation' and 'Task' showed that ∆[O(2)Hb] during preparation was preparation-specific, i.e., positively affected by the presence of preparatory stimuli, whereas during task performance ∆[O(2)Hb] was both preparation-and task-specific, i.e., additionally affected by the task mode. These results are particularly appealing from a practical point of view for making use of MI in neuroscientific applications. Especially neurorehabilitation and neural interfaces may benefit from utilizing positive interactions between mental preparation and MI performance.Extension of mental preparation positively affects motor imagery as compared to motor execution: a functional near-infrared spectroscopy AbstractMotor imagery (MI) is widely used to study cognitive action control. Although, the neural simulation theory assumes that MI and motor execution (ME) share many common features, the extent of similarity and whether it spreads into the preparation phase is still under investigation. Here we asked, whether an extension of physiological mental preparation has a comparable effect on MI and ME.Data were recorded using wireless functional near-infrared spectroscopy (fNIRS) in a two-stage task design where subjects were cued with or without preparatory stimuli to either execute or imagine complex sequential thumb-finger tasks.The main finding is that the extended mental preparation has a significant positive effect on oxy-Hb]) in response to MI, which is proportionally larger as that found in response to ME. Furthermore, fNIRS was capable to discriminate within each task whether it was preceded by preparatory stimuli or not. Transition from mental preparation to actual performance (ME or MI) was reflected by a dip of the fNIRS signal presumably related to underlying cortical processes changing between preparation and task performance. S...

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Muscular responses during motor imagery as a function of muscle contraction types

Cited by 135 publications

References 66 publications

Incomplete inhibition of central postural commands during manual motor imagery

Incomplete inhibition of central postural commands during manual motor imagery

Effect of Mental Training on the Balance Control Ability of Healthy Subjects

Extension of mental preparation positively affects motor imagery as compared to motor execution: A functional near-infrared spectroscopy study

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