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Babiloni, C. et al.

Babiloni, Brancucci, Arendt-Nielsen, Del Percio, Babiloni, Pascual-Marqui, Sabbatini, Rossini, Chen,

Cortical sensorimotor interactions during the expectancy of a go/no-go task: effects of painful stimuli.

The intent of this electroencephalography study was to investigate the competition between cortical nociceptive and cognitive-motor processes preceding sensorimotor interactions. Sensorimotor expectancy processes to painful stimulation and motor go/no-go demands were indexed over primary sensorimotor and midline cortical areas by contingent negative variation (CNV). Before the sensorimotor interaction, CNV was observed over midline posterior and bilateral central areas. Early expectancy of painful stimulation and the go/no-go task induced an evident midline posterior CNV. During the late expectancy period. CNV extended to the right central area contralateral to the stimulation. These findings suggest a sequential activation of midline posterior and primary sensorimotor areas contralateral to the painful stimulation as a reflection of the enhanced nociceptive processes preceding painful sensorimotor interactions.[1]

References

Cortical sensorimotor interactions during the expectancy of a go/no-go task: effects of painful stimuli. Babiloni, C., Brancucci, A., Arendt-Nielsen, L., Del Percio, C., Babiloni, F., Pascual-Marqui, R.D., Sabbatini, G., Rossini, P.M., Chen, A.C. Behav. Neurosci. (2004) [Pubmed]

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