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Huang X, Yin J, Liu X, Tan W, Lao M, Wang X, Liu S, Ou Q, Tang D, Wu W. The overgeneralization of pain-related fear in individuals with higher pain sensitivity: A behavioral and event-related potential study. Brain Res 2023; 1818:148473. [PMID: 37414269 DOI: 10.1016/j.brainres.2023.148473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 06/23/2023] [Accepted: 06/28/2023] [Indexed: 07/08/2023]
Abstract
Fear generalization contributes to the development and maintenance of pain. Pain sensitivity has been proposed to predict the strength of fear responses to aversive stimuli. However, whether individual variation in pain sensitivity affects pain-related fear generalization and its underlying cognitive processing remains unclear. To address this gap, we recorded behavioral and event-related potential (ERP) data among 22 high pain sensitivity (HPS) and 22 low pain sensitivity (LPS) healthy adults when exposed to a fear generalization paradigm. The behavioral results indicate that the HPS group displayed higher unconditioned stimulus expectancy and greater fear, arousal, and anxiety ratings to conditioned stimulus and generalization stimulus than the LPS group (all p values < 0.05). The ERP results showed that the HPS group exhibited a larger late positive potential evoked by GS2, GS3 and CS- (all p < 0.005) but a smaller N1 evoked by all CS and GSs (all p values < 0.05) relative to the LPS group. These findings suggest that individuals with a high level of pain sensitivity allocate more attention resources to pain-related threatening stimuli, which contributes to an overgeneralization of pain-related fear.
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Affiliation(s)
- Xiaomin Huang
- Department of Rehabilitation Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China
| | - Junxiao Yin
- Department of Clinical Medical College of Acupuncture and Rehabilitation, University of Traditional Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Xinli Liu
- Department of Rehabilitation Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China
| | - Wenwei Tan
- Department of Rehabilitation Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China
| | - Mengting Lao
- Department of Rehabilitation Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China
| | - Xianglong Wang
- Department of Rehabilitation Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China
| | - Sishi Liu
- Department of Rehabilitation Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China
| | - Qiling Ou
- Department of Rehabilitation Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China
| | - Danzhe Tang
- Department of Rehabilitation Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China
| | - Wen Wu
- Department of Rehabilitation Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China.
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Meulders A. Fear in the context of pain: Lessons learned from 100 years of fear conditioning research. Behav Res Ther 2020; 131:103635. [DOI: 10.1016/j.brat.2020.103635] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 04/20/2020] [Accepted: 04/24/2020] [Indexed: 02/06/2023]
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