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Inhibitory effect of voluntary movement preparation on cutaneous heat pain and laser-evoked potentials.

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Title: Inhibitory effect of voluntary movement preparation on cutaneous heat pain and laser-evoked potentials.
Authors: Le Pera, D. (AUTHOR), Brancucci, A. (AUTHOR), De Armas, L. (AUTHOR), Del Percio, C. (AUTHOR), Miliucci, R. (AUTHOR), Babiloni, C. (AUTHOR), Restuccia, D. (AUTHOR), Rossini, P. M. (AUTHOR), Valeriani, M. (AUTHOR)
Source: European Journal of Neuroscience. Mar2007, Vol. 25 Issue 6, p1900-1907. 8p. 3 Diagrams, 1 Chart, 1 Graph.
Subjects: Motor cortex, Pain, Body movement, Neurophysiology, Neural stimulation, Neurology
Abstract: In our study, preparation of voluntary movement was used to physiologically activate the motor cortex areas and the effect of this activation on CO2 laser-evoked potentials (LEPs) was explored. LEPs were recorded from 31 scalp electrodes in 10 healthy subjects after painful stimulation of the right C6–C7 skin dermatomes. LEP stimuli were delivered in the time interval between a visual warning stimulus followed after 1 s. by an imperative stimulus. The imperative stimulus triggered: (i) no task in the baseline condition (Pain); (ii) flexion–extension movements of the second finger of the right hand in the movement condition (Pain + Movement); (iii) cognitive task (mathematic computation) in the distraction condition (Pain + Cognition). The experimental conditions were also repeated during application of laser stimuli on the left C6–C7 skin dermatomes. Compared with the baseline condition (no task required), during preparation of right-hand voluntary movement there was a significant reduction in LEP amplitude and subjective pain rating after right- but not after left-hand stimulation, which suggests that the observed effect cannot be attributed to a nonspecific reduction in attention toward painful stimulus. During preparation of a cognitive task, LEP amplitude was reduced compared to baseline. Our results represent the first neurophysiological suggestion that physiological activation of the motor cortex, occurring during movement preparation, inhibits cortical pain processing by a centrifugal mechanism. [ABSTRACT FROM AUTHOR]
Copyright of European Journal of Neuroscience is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Inhibitory effect of voluntary movement preparation on cutaneous heat pain and laser-evoked potentials.
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  Data: <searchLink fieldCode="AR" term="%22Le+Pera%2C+D%2E%22">Le Pera, D.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Brancucci%2C+A%2E%22">Brancucci, A.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22De+Armas%2C+L%2E%22">De Armas, L.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Del+Percio%2C+C%2E%22">Del Percio, C.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Miliucci%2C+R%2E%22">Miliucci, R.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Babiloni%2C+C%2E%22">Babiloni, C.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Restuccia%2C+D%2E%22">Restuccia, D.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rossini%2C+P%2E+M%2E%22">Rossini, P. M.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Valeriani%2C+M%2E%22">Valeriani, M.</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22European+Journal+of+Neuroscience%22">European Journal of Neuroscience</searchLink>. Mar2007, Vol. 25 Issue 6, p1900-1907. 8p. 3 Diagrams, 1 Chart, 1 Graph.
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  Data: <searchLink fieldCode="DE" term="%22Motor+cortex%22">Motor cortex</searchLink><br /><searchLink fieldCode="DE" term="%22Pain%22">Pain</searchLink><br /><searchLink fieldCode="DE" term="%22Body+movement%22">Body movement</searchLink><br /><searchLink fieldCode="DE" term="%22Neurophysiology%22">Neurophysiology</searchLink><br /><searchLink fieldCode="DE" term="%22Neural+stimulation%22">Neural stimulation</searchLink><br /><searchLink fieldCode="DE" term="%22Neurology%22">Neurology</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: In our study, preparation of voluntary movement was used to physiologically activate the motor cortex areas and the effect of this activation on CO2 laser-evoked potentials (LEPs) was explored. LEPs were recorded from 31 scalp electrodes in 10 healthy subjects after painful stimulation of the right C6–C7 skin dermatomes. LEP stimuli were delivered in the time interval between a visual warning stimulus followed after 1 s. by an imperative stimulus. The imperative stimulus triggered: (i) no task in the baseline condition (Pain); (ii) flexion–extension movements of the second finger of the right hand in the movement condition (Pain + Movement); (iii) cognitive task (mathematic computation) in the distraction condition (Pain + Cognition). The experimental conditions were also repeated during application of laser stimuli on the left C6–C7 skin dermatomes. Compared with the baseline condition (no task required), during preparation of right-hand voluntary movement there was a significant reduction in LEP amplitude and subjective pain rating after right- but not after left-hand stimulation, which suggests that the observed effect cannot be attributed to a nonspecific reduction in attention toward painful stimulus. During preparation of a cognitive task, LEP amplitude was reduced compared to baseline. Our results represent the first neurophysiological suggestion that physiological activation of the motor cortex, occurring during movement preparation, inhibits cortical pain processing by a centrifugal mechanism. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of European Journal of Neuroscience is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/j.1460-9568.2007.05389.x
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              Text: Mar2007
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