Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-10-09 Cooperative journals: 《心理学报》
Abstract： Individuals with autism spectrum disorders (ASD) are typically characterized by impaired social interactions that are thought to be related to deficits in empathy. While cognitive empathy deficit in ASD is widely recognized, it remains controversial whether individuals with ASD have a deficiency in emotional empathy. According to the shared representation theory, psychological and neuronal mechanisms involved in the personal experience of an emotional or somatosensory state are also engaged while empathizing with other individuals in those states. It suggests that the deficits of empathy seen in the ASD population could arise from the atypical experience of first-hand pain. Mild, subclinical forms of the characteristics associated with ASD are referred to as autistic traits. Individuals with high autistic traits exhibit sensory, emotional, and social behaviors similar to those with ASD. Given the relationship between pain empathy and first-hand pain as well as the similarity between autistic traits and ASD, the present study tested the hypothesis that autistic traits in the general population would influence pain empathic responses, which could be contributed by first-hand pain-related profiles.In Experiment 1, we adopted an ecological pain empathy paradigm and compared behavioral and neural activity between individuals with high scores on the Autism-Spectrum Quotient Test (HAQ, with high autistic traits) and those with low scores (LAQ, with low autistic traits). During the pain empathy paradigm, the participants either perceived the painful electrical stimuli themselves or witnessed the delivery of painful electrical stimuli to their partners in certain and uncertain contexts. When perceiving pain themselves, behavioral and brain responses were comparable between HAQ and LAQ groups. When witnessing others in pain, participants in the HAQ group had greater amplitudes of the P2 component on the event-related potentials and reported higher ratings of unpleasantness than those in the LAQ group. The between-group differences in the behavioral and neural responses related to pain empathy were not moderated by certainty of the context (certain or uncertain). Mediation analysis further revealed that the between-group differences in the unpleasantness elicited by witnessing others' pain could be contributed by the greater fear of pain while anticipating the upcoming painful stimuli.In Experiment 2, the relationship among autistic traits, pain-related profiles, and trait empathy was assessed in randomly recruited participants. We found that autistic trait levels were negatively correlated with scores on the perspective-taking subscale of the Interpersonal Reactivity Index and positively correlated with the personal distress subscale. Importantly, pain-related fear and pain catastrophizing mediated the link between autistic traits and personal distress. Data from Experiments 1 and 2 demonstrated that autistic traits heighten emotional empathy, which can be explained by the negative emotion and cognition toward pain. Given the similarities between individuals with high autistic traits and ASD, this finding may help to expand the biological mechanisms underlying ASD, such as explaining empathy deficits or other social difficulties seen in the ASD from the perspective of atypical pain-related profiles. Future studies should combine multiple modalities of painful stimulations and multidimensional pain assessments to comprehensively characterize pain-related profiles among individuals with high autistic traits or ASD, and establish linkage between pain-related profiles and empathy or social deficits. This understanding has the potential to provide targets for clinical interventions and treatments of ASD.
Subjects: Psychology >> Cognitive Psychology submitted time 2023-03-15
Abstract：
Individuals with autism spectrum disorders (ASD) are typically characterized by impaired social interactions that are thought to be related to deficits in empathy. While cognitive empathy deficit in ASD is widely recognized, it remains controversial whether individuals with ASD have a deficiency in emotional empathy. According to the shared representation theory, psychological and neuronal mechanisms involved in the personal experience of an emotional or somatosensory state are also engaged while empathizing with other individuals in those states. It suggests that the deficits of empathy seen in the ASD population could arise from the atypical experience of first-hand pain. Mild, subclinical forms of the characteristics associated with ASD are referred to as autistic traits. Individuals with high autistic traits exhibit sensory, emotional, and social behaviors similar to those with ASD. Given the relationship between pain empathy and first-hand pain as well as the similarity between autistic traits and ASD, the present study tested the hypothesis that autistic traits in the general population would influence pain empathic responses, which could be contributed by first-hand pain-related profiles.
In Experiment 1, we adopted an ecological pain empathy paradigm and compared behavioral and neural activity between individuals with high scores on the Autism-Spectrum Quotient Test (HAQ, with high autistic traits) and those with low scores (LAQ, with low autistic traits). During the pain empathy paradigm, the participants either perceived the painful electrical stimuli themselves or witnessed the delivery of painful electrical stimuli to their partners in certain and uncertain contexts. When perceiving pain themselves, behavioral and brain responses were comparable between HAQ and LAQ groups. When witnessing others in pain, participants in the HAQ group had greater amplitudes of the P2 component on the event-related potentials and reported higher ratings of unpleasantness than those in the LAQ group. The between-group differences in the behavioral and neural responses related to pain empathy were not moderated by certainty of the context (certain or uncertain). Mediation analysis further revealed that the between-group differences in the unpleasantness elicited by witnessing others’ pain could be contributed by the greater fear of pain while anticipating the upcoming painful stimuli.
In Experiment 2, the relationship among autistic traits, pain-related profiles, and trait empathy was assessed in randomly recruited participants. We found that autistic trait levels were negatively correlated with scores on the perspective-taking subscale of the Interpersonal Reactivity Index and positively correlated with the personal distress subscale. Importantly, pain-related fear and pain catastrophizing mediated the link between autistic traits and personal distress.
Data from Experiments 1 and 2 demonstrated that autistic traits heighten emotional empathy, which can be explained by the negative emotion and cognition toward pain. Given the similarities between individuals with high autistic traits and ASD, this finding may help to expand the biological mechanisms underlying ASD, such as explaining empathy deficits or other social difficulties seen in the ASD from the perspective of atypical pain-related profiles. Future studies should combine multiple modalities of painful stimulations and multidimensional pain assessments to comprehensively characterize pain-related profiles among individuals with high autistic traits or ASD, and establish linkage between pain-related profiles and empathy or social deficits. This understanding has the potential to provide targets for clinical interventions and treatments of ASD.
Peer Review Status:
Awaiting Review
Subjects: Psychology >> Physiological Psychology submitted time 2021-02-03
Abstract： Pain is defined as an unpleasant sensory and emotional experience associated with, or resembling that associated with, actual or potential tissue damage. Pain is of vital functional significance, as it signals threat and initiates behavioral adaptations to avoid harm so as to protect the body. Previous studies have shown abnormalities in pain sensitivity among individuals with autism spectrum disorder (ASD), which have been associated with their clinical core symptoms, including restricted and repetitive behaviors as well as deficits in social behaviors. Evidence from case studies and surveys suggested the hyposensitivity to pain for individuals with ASD. Nevertheless, results from experimental studies that involve the application of noxious stimulations and psychophysical measurements were heterogeneous, e.g., some studies reported hypersensitivity to pain in ASD individuals, others reported their hyposensitivity or even normal sensitivity to pain. In this study, we utilized a meta-analysis approach to systematically review experimental studies that investigated pain sensitivity among individuals with ASD and published before August 10, 2020. The meta-analysis was performed according to the rigorous PRISMA Protocol. Studies were included in the analysis if they included both clearly diagnosed ASD individuals and healthy controls, reported data relevant to pain sensitivity, including pain threshold, pain tolerance, pain ratings, and pain-related physiological responses. Relevant studies were obtained from databases including China National Knowledge Infrastructure, Web of Science, PsycInfo, and PubMed by searching for keywords including pain, nociception, autis*, and Asperger. The meta-analysis was conducted in STATA12, and the effect size Hedge’s g with ±95% confidence intervals (CIs) was calculated using a random effect statistical model. Further, we assessed possible moderating effects from variables of pain modality, pain site, the age of involved participants, the sample size of the ASD group and sample locations. Sixteen experimental studies were included in the meta-analysis, with a total sample size N = 822. Pain threshold was not significantly different between ASD individuals and healthy controls (g = 0.34, 95%CI = [?0.14, 0.82]), and this estimate was moderated by variables of pain modality, the age of involved participants, and the sample size of the ASD group. Specifically, individuals with ASD exhibited lower pain thresholds than those of healthy controls selectively for pressure pain (g = 1.62, 95%CI = [0.46, 2.77]). For the outcome variable of pain evoked physiological response, individuals with ASD showed significantly greater physiological responses to medical procedures than those of healthy controls (g = 2.87, 95%CI = [1.07, 4.67]). Nevertheless, ASD and control groups had comparable pain ratings (g = ?0.26, 95%CI = [?0.64, 0.11]). These results suggest that the abnormalities of pain sensitivity among individuals with ASD were modality-dependent, with the abnormality selectively applicable to pressure pain or medical pain. Future studies should combine behavioral, physiological, and neuroimaging measures to comprehensively investigate the pain sensitivity profiles of individuals with ASD. The potential link between pain sensitivity and clinical core symptoms among individuals with ASD should be characterized. Relevant results would potentially expand our understanding of ASD neurobiological mechanisms and provide the theoretical basis for pain assessment among individuals with ASD. " " "
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