The influence of transient spatial attention on the processing of intracutaneous electrical stimuli examined with ERPs

Robert Henricus Johannes van der Lubbe*, Jan R. Buitenweg, Maria Boschker, Bernard Gerdes, Marijtje L.A. Jongsma

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

    14 Citations (Scopus)

    Abstract

    Objective: Determine the influence of transient spatial attention on the processing of intracutaneous electrical stimuli.

    Methods: Electrical stimuli, a single pulse or five pulses, were presented at the index fingers of the left or right hand. The to-be-attended hand and stimulated finger varied randomly from trial to trial. Participants had to press a foot pedal only when the relevant stimulus, varied between participants, occurred at the attended hand. EEG was measured to extract relevant ERP components.

    Results: The N100 and N150 were enhanced for attended as compared to unattended stimuli. The N100, N150, P260, and the P500 were enlarged for five pulse as compared to single pulse stimuli. The P260, which is thought to reflect a call for attention, was enhanced for unattended as compared to attended stimuli. Source analyses indicate that attentional effects on the N100, N150, and P260 may be related to changes in activity in secondary somatosensory areas and the anterior cingulate cortex.

    Conclusions: A transient manipulation of spatial attention increases cortical activity induced by attended relative to unattended intracutaneous electrical stimuli, but initially unattended stimuli appear to induce an enhanced orienting effect.
    Original languageEnglish
    Pages (from-to)947-959
    Number of pages13
    JournalClinical neurophysiology
    Volume123
    Issue number5
    DOIs
    Publication statusPublished - May 2012

    Keywords

    • BSS-Biomechatronics and rehabilitation technology
    • Source localization
    • Orienting effect
    • Nociception
    • ERPs
    • Transient
    • Spatial attention
    • Intracutaneous electrical stimulation

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