Related Experiment Video
Updated: Aug 23, 2026

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
Published on: July 5, 2015
Attentional distraction of CNV depending on the spatial focus
Tomiharu Hiruma1, Yasuharu Sato, Hirooki Yabe
1Department of Neuropsychiatry, Hirosaki University School of Medicine, Hirosaki, Japan. aaa81520@pop11.odn.ne.jp
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.
Related Concept Videos
Depth Perception and Spatial Vision
Association Areas of the Cortex
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...

