title: Cortical sensorimotor interactions during the expectancy of a go/no-go task: effects of painful stimuli.
abstract: 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.
authors.affiliation: Dipartimento di Fisiologia Umana e Farmacologia, Sezione di EEG ad Alta Risoluzione, Università degli Studi di Roma La Sapienza, Piazzale Aldo Moro 5, 00185 Rome, Italy. claudio.babiloni@uniromal.it.
authors.forename: Claudio
authors.initials: C
authors.lastname: Babiloni
authors.forename: Alfredo
authors.initials: A
authors.lastname: Brancucci
authors.forename: Lars
authors.initials: L
authors.lastname: Arendt-Nielsen
authors.forename: Claudio
authors.initials: C
authors.lastname: Del Percio
authors.forename: Fabio
authors.initials: F
authors.lastname: Babiloni
authors.forename: Roberto D
authors.initials: RD
authors.lastname: Pascual-Marqui
authors.forename: Giancarlo
authors.initials: G
authors.lastname: Sabbatini
authors.forename: Paolo Maria
authors.initials: PM
authors.lastname: Rossini
authors.forename: Andrew C N
authors.initials: AC
authors.lastname: Chen
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D002540:Cerebral Cortex / Q000502:physiology*; D004558:Electric Stimulation / Q000379:methods; D004569:Electroencephalography / Q000379:methods; D006801:Humans; D008297:Male; D010146:Pain / Q000503:physiopathology*; D010147:Pain Measurement / Q000379:methods*; D010775:Photic Stimulation / Q000379:methods; D011597:Psychomotor Performance / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology