title: Attentional distraction of CNV depending on the spatial focus.
abstract: To investigate the distraction of spatial attention to the task-irrelevant visual stimuli, contingent negative variation (CNV) was measured by using a forewarned reaction time task in 20 healthy subjects. The lasting emission of light, irrelevant to the CNV task, at each perimetric angle of 15 degrees, 30 degrees or 45 degrees to the fixated point was presented to the subjects. The amplitude of early CNV was small only under the light-emission at the angle of 30 degrees. Our results indicate that attention is distracted even by the lasting, task-irrelevant stimuli and that distraction is dependent on the focusing function of attention.
authors.affiliation: Department of Neuropsychiatry, Hirosaki University School of Medicine, Hirosaki, Japan. aaa81520@pop11.odn.ne.jp
authors.forename: Tomiharu
authors.initials: T
authors.lastname: Hiruma
authors.forename: Yasuharu
authors.initials: Y
authors.lastname: Sato
authors.forename: Hirooki
authors.initials: H
authors.lastname: Yabe
authors.forename: Naoko
authors.initials: N
authors.lastname: Shinozaki
authors.forename: Takeyuki
authors.initials: T
authors.lastname: Sutoh
authors.forename: Takashi
authors.initials: T
authors.lastname: Matuoka
authors.forename: Tadayoshi
authors.initials: T
authors.lastname: Nashida
authors.forename: Ren
authors.initials: R
authors.lastname: Asai
authors.forename: Sunao
authors.initials: S
authors.lastname: Kaneko
mesh_terms: D000293:Adolescent; D000328:Adult; D001288:Attention / Q000502:physiology*; D003265:Contingent Negative Variation; D004569:Electroencephalography; D005074:Evoked Potentials, Visual / Q000502:physiology; D005260:Female; D005403:Fixation, Ocular / Q000502:physiology; D006801:Humans; D008297:Male; D010775:Photic Stimulation; D013028:Space Perception / Q000502:physiology*