The modulation of corticospinal excitability during motor imagery of actions with objects.
We investigated whether corticospinal excitability during motor imagery of actions (the power or the pincer grip) with objects was influenced by actually touching objects (tactile input) and by the congruency of posture with the imagined action (proprioceptive input). Corticospinal excitability was...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2011-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3192791?pdf=render |
| _version_ | 1811289929542533120 |
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| author | Nobuaki Mizuguchi Masanori Sakamoto Tetsuro Muraoka Kento Nakagawa Shoichi Kanazawa Hiroki Nakata Noriyoshi Moriyama Kazuyuki Kanosue |
| author_facet | Nobuaki Mizuguchi Masanori Sakamoto Tetsuro Muraoka Kento Nakagawa Shoichi Kanazawa Hiroki Nakata Noriyoshi Moriyama Kazuyuki Kanosue |
| author_sort | Nobuaki Mizuguchi |
| collection | DOAJ |
| description | We investigated whether corticospinal excitability during motor imagery of actions (the power or the pincer grip) with objects was influenced by actually touching objects (tactile input) and by the congruency of posture with the imagined action (proprioceptive input). Corticospinal excitability was assessed by monitoring motor evoked potentials (MEPs) in the first dorsal interosseous following transcranial magnetic stimulation over the motor cortex. MEPs were recorded during imagery of the power grip of a larger-sized ball (7 cm) or the pincer grip of a smaller-sized ball (3 cm)--with or without passively holding the larger-sized ball with the holding posture or the smaller-sized ball with the pinching posture. During imagery of the power grip, MEPs amplitude was increased only while the actual posture was the same as the imagined action (the holding posture). On the other hand, during imagery of the pincer grip while touching the ball, MEPs amplitude was enhanced in both postures. To examine the pure effect of touching (tactile input), we recorded MEPs during imagery of the power and pincer grip while touching various areas of an open palm with a flat foam pad. The MEPs amplitude was not affected by the palmer touching. These findings suggest that corticospinal excitability during imagery with an object is modulated by actually touching an object through the combination of tactile and proprioceptive inputs. |
| first_indexed | 2024-04-13T04:02:47Z |
| format | Article |
| id | doaj.art-f27d9a6d84e64e0fb12243f2d32f11d9 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-13T04:02:47Z |
| publishDate | 2011-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-f27d9a6d84e64e0fb12243f2d32f11d92022-12-22T03:03:25ZengPublic Library of Science (PLoS)PLoS ONE1932-62032011-01-01610e2600610.1371/journal.pone.0026006The modulation of corticospinal excitability during motor imagery of actions with objects.Nobuaki MizuguchiMasanori SakamotoTetsuro MuraokaKento NakagawaShoichi KanazawaHiroki NakataNoriyoshi MoriyamaKazuyuki KanosueWe investigated whether corticospinal excitability during motor imagery of actions (the power or the pincer grip) with objects was influenced by actually touching objects (tactile input) and by the congruency of posture with the imagined action (proprioceptive input). Corticospinal excitability was assessed by monitoring motor evoked potentials (MEPs) in the first dorsal interosseous following transcranial magnetic stimulation over the motor cortex. MEPs were recorded during imagery of the power grip of a larger-sized ball (7 cm) or the pincer grip of a smaller-sized ball (3 cm)--with or without passively holding the larger-sized ball with the holding posture or the smaller-sized ball with the pinching posture. During imagery of the power grip, MEPs amplitude was increased only while the actual posture was the same as the imagined action (the holding posture). On the other hand, during imagery of the pincer grip while touching the ball, MEPs amplitude was enhanced in both postures. To examine the pure effect of touching (tactile input), we recorded MEPs during imagery of the power and pincer grip while touching various areas of an open palm with a flat foam pad. The MEPs amplitude was not affected by the palmer touching. These findings suggest that corticospinal excitability during imagery with an object is modulated by actually touching an object through the combination of tactile and proprioceptive inputs.http://europepmc.org/articles/PMC3192791?pdf=render |
| spellingShingle | Nobuaki Mizuguchi Masanori Sakamoto Tetsuro Muraoka Kento Nakagawa Shoichi Kanazawa Hiroki Nakata Noriyoshi Moriyama Kazuyuki Kanosue The modulation of corticospinal excitability during motor imagery of actions with objects. PLoS ONE |
| title | The modulation of corticospinal excitability during motor imagery of actions with objects. |
| title_full | The modulation of corticospinal excitability during motor imagery of actions with objects. |
| title_fullStr | The modulation of corticospinal excitability during motor imagery of actions with objects. |
| title_full_unstemmed | The modulation of corticospinal excitability during motor imagery of actions with objects. |
| title_short | The modulation of corticospinal excitability during motor imagery of actions with objects. |
| title_sort | modulation of corticospinal excitability during motor imagery of actions with objects |
| url | http://europepmc.org/articles/PMC3192791?pdf=render |
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