Journal
EXPERIMENTAL BRAIN RESEARCH
Volume 195, Issue 3, Pages 467-472Publisher
SPRINGER
DOI: 10.1007/s00221-009-1799-0
Keywords
Visual attention; Chronic pain; Neural plasticity; Mechanical pain
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Funding
- Richter Gedeon Ltd
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Perceived pain intensity is modulated by attention. However, it is not known that how pain intensity ratings are affected by attention in capsaicin-induced secondary hyperalgesia. Here we show that perceived pain intensity in secondary hyperalgesia is decreased when attention is distracted away from the painful pinprick stimulus with a visual task. Furthermore, it was found that the magnitude of attentional modulation in secondary hyperalgesia is very similar to that of capsaicin-untreated, control condition. Our findings, showing no interaction between capsaicin treatment and attentional modulation suggest that capsaicin-induced secondary hyperalgesia and attention might affect mechanical pain through independent mechanisms.
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