Lookup NU author(s): Dr Quoc Vuong,
Professor Vera Araujo Soares
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
There is accumulating evidence that task demands and psychological states can affect perceived pain intensity. Different accounts have been proposed to explain this attenuation based either on how limited attentional resources are allocated to the pain stimulus or on how the threat value of the pain stimulus biases attention. However, the evidence for both proposals remains mixed. Here we introduce an incremental dual-task paradigm in which participants were asked to detect pain on their fingertip without any additional tasks during baseline phases or while concurrently detecting visual targets during task phases. The force applied to participants’ fingertip in all phases increased incrementally until they detected moderate pain. In Experiment 1, we used coloured shapes and in Experiment 2 we used affective images as visual targets. We also manipulated the threat value of the pain stimulus in Experiment 2. For both experiments, we found that a concurrent task attenuated perceived pain intensity: mean force was significantly greater for the same moderate pain during task compared to baseline phases. Furthermore although task difficulty and affective content did not affect pain perception, the threat value of the pain stimulus moderated the magnitude of pain attenuation.
Author(s): Vuong QC, Owen A, Akin-Akinyosoye K, Araujo-Soares V
Publication type: Article
Publication status: Published
Journal: PLoS One
Online publication date: 09/11/2018
Acceptance date: 29/10/2018
Date deposited: 02/11/2018
ISSN (electronic): 1932-6203
Publisher: Public Library of Science
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