title: Alpha event-related desynchronization preceding a go/no-go task: a high-resolution EEG study.
abstract: The authors delineated the time evolution of alpha event-related desynchronization over human frontal, parietal, and primary sensorimotor areas during the expectancy of a go/no-go task. The main issue under investigation was whether anticipatory processes impinged upon cortical areas in sequential or parallel mode. Compared with the control condition, in the experimental condition there was an Alpha 1 desynchronization over the central midline, an Alpha 2 desynchronization increasing over primary sensorimotor areas, and an Alpha 3 desynchronization increasing in parallel over bilateral primary sensorimotor areas. These processes had different temporal features. Results disclose an anticipatory activity of central midline areas and primary sensorimotor areas in both parallel and sequential modes. This reflects an adaptive, energy-consuming strategy rather than an economic waiting for the go stimulus.
authors.affiliation: Dipartimento di Fisiologia Umana e Farmacologia, Università degli Studi di Roma "La Sapienza', 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: Fabio
authors.initials: F
authors.lastname: Babiloni
authors.forename: Paolo
authors.initials: P
authors.lastname: Capotosto
authors.forename: Filippo
authors.initials: F
authors.lastname: Carducci
authors.forename: Febo
authors.initials: F
authors.lastname: Cincotti
authors.forename: Lara
authors.initials: L
authors.lastname: Romano
authors.forename: Andrew C N
authors.initials: AC
authors.lastname: Chen
authors.forename: Paolo Maria
authors.initials: PM
authors.lastname: Rossini
mesh_terms: D000328:Adult; D000513:Alpha Rhythm / Q000145:classification / Q000379:methods*; D000704:Analysis of Variance; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000033:anatomy & histology / Q000502:physiology*; D003657:Decision Making / Q000502:physiology*; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D010775:Photic Stimulation / Q000379:methods; D013057:Spectrum Analysis / Q000379:methods; D013997:Time Factors