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- W2015811268 abstract "Pain can involuntarily capture attention and disrupt pain-unrelated cognitive activities. The brain mechanisms of these effects were explored by laser- and visual-evoked potentials. Consecutive nociceptive laser stimuli and visual stimuli were delivered in pairs. Subjects were instructed to ignore nociceptive stimuli while performing a task on visual targets. Because involuntary attention is particularly sensitive to novelty, in some trials (17%), unexpected laser stimuli were delivered on a different hand area (location-deviant) relative to the more frequent standard laser stimuli. Compared with frequent standard laser stimuli, deviant stimuli enhanced all nociceptive-evoked brain potentials (laser N1, N2, P2a, P2b). Deviant laser stimuli also decreased the amplitude of late latency-evoked responses (visual N2-P3) to the subsequent visual targets and delayed reaction times to them. The data confirm that nociceptive processing competes with pain-unrelated cognitive activities for attentional resources and that concomitant nociceptive events affect behavior by depressing attention allocation to ongoing cognitive processing. The laser-evoked potential magnitude reflected the engagement of attention to the novel nociceptive stimuli. We conclude that the laser-evoked potentials index the activity of a neural system involved in the detection of novel salient stimuli in order to focus attention and prioritize action to potentially damaging dangers." @default.
- W2015811268 created "2016-06-24" @default.
- W2015811268 creator A5016448399 @default.
- W2015811268 creator A5043511309 @default.
- W2015811268 creator A5070235088 @default.
- W2015811268 date "2009-10-01" @default.
- W2015811268 modified "2023-10-18" @default.
- W2015811268 title "Involuntary Orienting of Attention to Nociceptive Events: Neural and Behavioral Signatures" @default.
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- W2015811268 doi "https://doi.org/10.1152/jn.00372.2009" @default.