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Activation of the parieto-premotor network is associated with vivid motor imagery--a parametric FMRI study.

Lorey B, Pilgramm S, Bischoff M, Stark R, Vaitl D, Kindermann S, Munzert J, Zentgraf K - PLoS ONE (2011)

Bottom Line: Within the right hemisphere, activation was found within the right cerebellum, the right putamen, and the right PMC.It is concluded that the perceived vividness of MI is parametrically associated with neural activity within sensorimotor areas.The results corroborate the hypothesis that MI is an outcome of neural computations based on movement representations located within motor areas.

View Article: PubMed Central - PubMed

Affiliation: Institute for Sports Science, Justus Liebig University Giessen, Giessen, Germany. Britta.Lorey@sport.uni-giessen.de

ABSTRACT
The present study examined the neural basis of vivid motor imagery with parametrical functional magnetic resonance imaging. 22 participants performed motor imagery (MI) of six different right-hand movements that differed in terms of pointing accuracy needs and object involvement, i.e., either none, two big or two small squares had to be pointed at in alternation either with or without an object grasped with the fingers. After each imagery trial, they rated the perceived vividness of motor imagery on a 7-point scale. Results showed that increased perceived imagery vividness was parametrically associated with increasing neural activation within the left putamen, the left premotor cortex (PMC), the posterior parietal cortex of the left hemisphere, the left primary motor cortex, the left somatosensory cortex, and the left cerebellum. Within the right hemisphere, activation was found within the right cerebellum, the right putamen, and the right PMC. It is concluded that the perceived vividness of MI is parametrically associated with neural activity within sensorimotor areas. The results corroborate the hypothesis that MI is an outcome of neural computations based on movement representations located within motor areas.

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Related in: MedlinePlus

Experimental procedure (left) and experimental conditions (right).
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pone-0020368-g004: Experimental procedure (left) and experimental conditions (right).

Mentions: In the fMRI phase, participants were scanned during a rest condition and while performing MI. Six variations of a repetitive aiming task with varying spatial accuracy (no, low, or high) either including an object or not were imagined. The stimulus material consisted of different pictures depicting the setting in which the respective hand movement was to be imagined (see Fig. 4; experimental conditions). These pictures showed: (a) no squares either with an object or without, (b) two big squares either with an object or without, or (c) two little squares either with an object or without. We chose imagery tasks with object-related movements and movements without objects in environments of varying spatial accuracy to ensure that the imagined movements differed in terms of their movement affordances.


Activation of the parieto-premotor network is associated with vivid motor imagery--a parametric FMRI study.

Lorey B, Pilgramm S, Bischoff M, Stark R, Vaitl D, Kindermann S, Munzert J, Zentgraf K - PLoS ONE (2011)

Experimental procedure (left) and experimental conditions (right).
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3105023&req=5

pone-0020368-g004: Experimental procedure (left) and experimental conditions (right).
Mentions: In the fMRI phase, participants were scanned during a rest condition and while performing MI. Six variations of a repetitive aiming task with varying spatial accuracy (no, low, or high) either including an object or not were imagined. The stimulus material consisted of different pictures depicting the setting in which the respective hand movement was to be imagined (see Fig. 4; experimental conditions). These pictures showed: (a) no squares either with an object or without, (b) two big squares either with an object or without, or (c) two little squares either with an object or without. We chose imagery tasks with object-related movements and movements without objects in environments of varying spatial accuracy to ensure that the imagined movements differed in terms of their movement affordances.

Bottom Line: Within the right hemisphere, activation was found within the right cerebellum, the right putamen, and the right PMC.It is concluded that the perceived vividness of MI is parametrically associated with neural activity within sensorimotor areas.The results corroborate the hypothesis that MI is an outcome of neural computations based on movement representations located within motor areas.

View Article: PubMed Central - PubMed

Affiliation: Institute for Sports Science, Justus Liebig University Giessen, Giessen, Germany. Britta.Lorey@sport.uni-giessen.de

ABSTRACT
The present study examined the neural basis of vivid motor imagery with parametrical functional magnetic resonance imaging. 22 participants performed motor imagery (MI) of six different right-hand movements that differed in terms of pointing accuracy needs and object involvement, i.e., either none, two big or two small squares had to be pointed at in alternation either with or without an object grasped with the fingers. After each imagery trial, they rated the perceived vividness of motor imagery on a 7-point scale. Results showed that increased perceived imagery vividness was parametrically associated with increasing neural activation within the left putamen, the left premotor cortex (PMC), the posterior parietal cortex of the left hemisphere, the left primary motor cortex, the left somatosensory cortex, and the left cerebellum. Within the right hemisphere, activation was found within the right cerebellum, the right putamen, and the right PMC. It is concluded that the perceived vividness of MI is parametrically associated with neural activity within sensorimotor areas. The results corroborate the hypothesis that MI is an outcome of neural computations based on movement representations located within motor areas.

Show MeSH
Related in: MedlinePlus