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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

Brain areas showing greater activation as a function of vivid (A) and nonvivid (B) motor imagery based on calculating a parametric modulation.
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pone-0020368-g002: Brain areas showing greater activation as a function of vivid (A) and nonvivid (B) motor imagery based on calculating a parametric modulation.

Mentions: A parametric analysis was performed to determine which brain sites were modulated by perceived imagery vividness. Results revealed a vividness-dependent increase of activation in a left-hemispheric network capturing the left putamen, the dorsal as well as the ventral part of the left PMC (dPMC and vPMC), the left inferior parietal cortex, the anterior part of the left superior parietal lobe, the left primary motor cortex (M1, Area 4a), the left somatosensory cortex (S1, Area 3b), the left insula, and the left cerebellum (Crus VIIIb). Within the right hemisphere, the activation cluster captured the right cerebellum (Crus VI) and the cerebellar vermis, as well as the right putamen. Another activation site was found in the right dPMC (Fig. 2A). These results are summarized in Table 1.When testing for regions whose activation was associated with vividness-related changes as well as with motor imagery specific effects, we found activation clusters within the superior and inferior parietal, as well as within the dorsal part of PMC (Fig. 3B, Table 2).


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)

Brain areas showing greater activation as a function of vivid (A) and nonvivid (B) motor imagery based on calculating a parametric modulation.
© Copyright Policy
Related In: Results  -  Collection

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

pone-0020368-g002: Brain areas showing greater activation as a function of vivid (A) and nonvivid (B) motor imagery based on calculating a parametric modulation.
Mentions: A parametric analysis was performed to determine which brain sites were modulated by perceived imagery vividness. Results revealed a vividness-dependent increase of activation in a left-hemispheric network capturing the left putamen, the dorsal as well as the ventral part of the left PMC (dPMC and vPMC), the left inferior parietal cortex, the anterior part of the left superior parietal lobe, the left primary motor cortex (M1, Area 4a), the left somatosensory cortex (S1, Area 3b), the left insula, and the left cerebellum (Crus VIIIb). Within the right hemisphere, the activation cluster captured the right cerebellum (Crus VI) and the cerebellar vermis, as well as the right putamen. Another activation site was found in the right dPMC (Fig. 2A). These results are summarized in Table 1.When testing for regions whose activation was associated with vividness-related changes as well as with motor imagery specific effects, we found activation clusters within the superior and inferior parietal, as well as within the dorsal part of PMC (Fig. 3B, Table 2).

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