Psychophysiology最新文献

{"title":"Cardiac Autonomic Dynamics Differentially Shape Cognitive and Affective Theory of Mind: Evidence From Respiratory Manipulation.","authors":"Bo-Cheng Hsu, Yen-Hsuan Hsu, Chia-Ying Weng","doi":"10.1111/psyp.70395","DOIUrl":"10.1111/psyp.70395","url":null,"abstract":"<p><p>Theory of Mind (ToM) is a fundamental component of social cognition that enables individuals to infer others' mental states and predict their behavior. Although ToM may be shaped by cardiac autonomic dynamics, the psychophysiological mechanisms underlying its cognitive (CToM) and affective (AToM) components remain unclear. Prior research has predominantly emphasized cardiac parasympathetic (PNS) modulation, whereas the role of cardiac sympathetic (SNS) activation-particularly under experimental manipulation-remains underexplored. The present study experimentally manipulated cardiac autonomic states using paced breathing to examine their effects on CToM and AToM performance and their associations with tonic and phasic cardiac autonomic dynamics. A total of 175 healthy young adults were assigned to fast-paced breathing (FPB; SNS-dominant), slow-paced breathing (SPB; PNS-enhanced), or control conditions. Cardiac autonomic indices were continuously recorded, and ToM performance was assessed following each manipulation. Results showed that manipulation checks confirmed distinct cardiac autonomic profiles without inducing emotional changes. FPB-characterized by increased SNS activation along with PNS withdrawal-selectively impaired CToM performance, whereas AToM remained unaffected, and no differences were observed between SPB and control conditions. Tonic analyses indicated that reciprocal cardiac PNS-SNS activity was positively associated with CToM performance, whereas better AToM was primarily related to higher cardiac PNS activity. At the phasic level, greater SNS reactivity uniquely predicted poorer CToM performance, whereas poorer AToM was associated with greater coordinated PNS-SNS modulation. The convergence between experimental manipulation and phasic patterns strengthens the interpretability of these associations. These findings provide direct evidence that cardiac autonomic dynamics differentially shape cognitive and affective components of ToM. Specifically, heightened cardiac SNS reactivity appears to disrupt cognitively demanding mental state inference, whereas overall cardiac PNS-SNS stability supports affective mental state attribution. This study advances an integrative framework linking dynamic, state-dependent cardiac autonomic processes to distinct components of social cognition.</p>","PeriodicalId":20913,"journal":{"name":"Psychophysiology","volume":"63 9","pages":"e70395"},"PeriodicalIF":3.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13547642/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148901081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Executive Functioning and Acute Stress Responses: The Role of Cognitive Appraisals, Repetitive Negative Thinking, and Emotion Regulation.","authors":"Elise Grimm, Stefan Agrigoroaei","doi":"10.1111/psyp.70388","DOIUrl":"https://doi.org/10.1111/psyp.70388","url":null,"abstract":"<p><p>Exposure to stress can have significant negative consequences on long-term health. Among modifiable targets for promoting adaptive stress responses, executive functioning has emerged as a promising candidate. The current study sought to examine the extent to which executive functioning facets (inhibition, flexibility, updating) and working memory capacity played a beneficial role in reactivity and recovery to an acute stressor. Participants completed executive functioning tasks in the laboratory before undergoing either an acute stressor (Maastricht Acute Stress Test, MAST) or its control equivalent (placebo-MAST). Multilevel models were conducted to predict anticipation, reactivity, and recovery to the stressor. For anticipation, poorer flexibility was associated with higher anticipatory blood pressure and skin conductance levels after receiving MAST instructions. For reactivity, lower flexibility was related to greater skin conductance levels during the stressor period compared to baseline. For recovery, poorer flexibility was related to poorer stress recovery, as evidenced by increased systolic blood pressure, mean skin conductance levels, and stress levels after the resting period compared to baseline. We found no evidence for a significant mediational role of cognitive appraisals, repetitive negative thinking, or emotion regulation. Hence, the study findings identified flexibility as an important factor for the promotion of adaptive acute stress responses.</p>","PeriodicalId":20913,"journal":{"name":"Psychophysiology","volume":"63 9","pages":"e70388"},"PeriodicalIF":3.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149031390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Combined Effects of Prefrontal tDCS and Slow-Paced Breathing on Stress and Emotions.","authors":"Emmanuelle Schoonjans, Jens Allaert, Ymke Verduyn, Joni Houfflyn, Stefanie De Smet, Mitchel Kappen, Cristina Ottaviani, Rudi De Raedt, Marie-Anne Vanderhasselt","doi":"10.1111/psyp.70399","DOIUrl":"10.1111/psyp.70399","url":null,"abstract":"<p><p>Difficulties in stress and emotion regulation can undermine well-being. Yet, they could be tackled by intervention acting on the nervous system. Two promising interventions could achieve this via complementary pathways: slow-paced breathing (SPB), acting via peripheral mechanisms, and prefrontal transcranial Direct Current Stimulation (tDCS), targeting brain regions involved in autonomic regulation. Combining those techniques could therefore enhance their effects. This placebo-controlled study examined the effects of SPB and tDCS, alone and in combination, on stress and emotions. Participants were assigned to four groups combining SPB (5.5 bpm) or control breathing (15 bpm) with active (2 mA) or sham tDCS (ramp up/ramp down). They completed a baseline assessment, the intervention, a psychosocial stress task, a recovery phase and an emotional task with negative versus neutral images. During the different phases, we measured psychophysiological indices of stress and emotion regulation (heart rate variability [RMSSD], skin conductance [level and responses], pupil dilation during the emotional task and blood pressure [systolic and diastolic], appraisal of threat [Primary Appraisal Secondary Appraisal Scale (PASA)], affect [Affect Scale], and the use of emotion regulation strategies [State Emotion Regulation Inventory (SERI)]). tDCS reduced pupil dilation, prevented the decline in positive activating affect after stress recovery and the emotional task and of distraction during the emotional task. SPB decreased pupil dilation, reduced skin conductance responses, increased acceptance and distraction use and prevented the decline in positive activating affect during stress recovery. Combining active tDCS with SPB reduced the effects on pupil dilation, positive affect and acceptance. For the other variables, no effect of the intervention was observed. Rather than enhancing outcomes, combining them may impede each intervention. These findings highlight the independent efficacy of SPB and tDCS, caution against their concurrent use and highlight the need for further investigation.</p>","PeriodicalId":20913,"journal":{"name":"Psychophysiology","volume":"63 9","pages":"e70399"},"PeriodicalIF":3.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149002541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Social Cost of Perseverative Cognition: Impairing Interpersonal Engagement Propensity Through Cognitive and Autonomic Dysregulation.","authors":"Martina Fusaro, Chiara Fini, Giovanna Cuomo, Seyma Kaya, Cristina Ottaviani, Vanessa Era","doi":"10.1111/psyp.70379","DOIUrl":"https://doi.org/10.1111/psyp.70379","url":null,"abstract":"<p><p>Perseverative cognition, the repetitive, sustained activation of cognitive representations about past stressors or anticipated threats, is known to impair attention and disrupt emotional and physiological regulation; yet, its interpersonal consequences remain poorly understood. This study tested whether a brief induction of perseverative cognition reduces interpersonal engagement propensity, defined as the willingness to initiate social interactions. In a within-subjects design, participants completed two counterbalanced sessions: (i) a perseverative cognition induction, involving the recall and description of a personally salient, recurrent, and emotionally distressing event; and (ii) a control condition, involving the description of the plot of a dramatic but non-self-referential film or book. Cognitive, emotional, and physiological responses were assessed using self-reported measures of thought distraction, negative affect, heart rate (HR), and vagally mediated HR variability (HRV), respectively. Interpersonal engagement propensity was evaluated through perceived self-other overlap (Inclusion of the Other in the Self, IOS), preferred interpersonal closeness, and automatic imitation. Compared with the control condition, the perseverative cognition induction elicited higher distraction, greater negative affect, elevated HR, and reduced HRV. Greater thought distraction and lower HRV were associated with reduced preferred interpersonal closeness, indicating that cognitive interference and diminished parasympathetic regulation may both contribute to reduced willingness to engage with others following perseverative cognition. These results suggest that perseverative cognition can undermine social engagement in healthy individuals, highlighting its potential role as a transdiagnostic mechanism contributing to social withdrawal.</p>","PeriodicalId":20913,"journal":{"name":"Psychophysiology","volume":"63 8","pages":"e70379"},"PeriodicalIF":3.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13481889/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148797551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dissociated in Anticipation, Common in Feedback: Neuroelectrophysiological Mechanisms of Social-Motivational Processing in Bivalent Evaluation Fears.","authors":"Rui Zhang, Jinhong Ding","doi":"10.1111/psyp.70374","DOIUrl":"10.1111/psyp.70374","url":null,"abstract":"<p><p>The Bivalent Evaluation Fear Hypothesis posits that fear of positive evaluation (FPE) and fear of negative evaluation (FNE) are two independent core characteristics of social anxiety. However, whether they rely on dissociable and/or shared neural mechanisms in the processing of social motivation remains unclear. By employing the Social Incentive Delay Task combined with EEG, we found that during the anticipation phase, individuals with high FPE exhibited \"generalized over-engagement toward evaluative situations\"-enhanced conflict monitoring (N2) and motivational preparation (CNV) in response to both reward and punishment cues. In contrast, individuals with high FNE displayed \"specific threat vigilance with generalized motivational withdrawal\"-demonstrating enhanced N2 specifically to punishment cues, along with reduced CNV to both reward and punishment cues, consistent with a profile of defensive motivational inhibition. During the feedback phase, neither group exhibited the positive-over-negative feedback effect observed in the control group, with reduced delta and theta oscillations in response to socially accepting feedback, suggesting a possible commonality in deep reward integration. These findings demonstrate that FPE and FNE are associated with distinct neuro-affective preparatory patterns during anticipation: one characterized by a generalized, vigilant over-mobilization, and the other by specific threat vigilance coupled with a generalized reduction in motivational engagement. At the same time, the similar delta and theta patterns during feedback may reflect a common difficulty in translating positive social outcomes into adaptive motivational behaviors. This study deepens our understanding of evaluation fears and provides critical neural evidence in support of the Bivalent Evaluation Fear Hypothesis.</p>","PeriodicalId":20913,"journal":{"name":"Psychophysiology","volume":"63 8","pages":"e70374"},"PeriodicalIF":3.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13428241/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148649284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exercise Dependence and Cardiovascular Reactivity to Acute Psychological Stress: An Extension and Replication Study.","authors":"Anna C Whittaker, Yuan Tian, Jenni Connelly, Jennifer L J Heaney, Aiden J Chauntry, Siobhán Howard","doi":"10.1111/psyp.70389","DOIUrl":"10.1111/psyp.70389","url":null,"abstract":"<p><p>Low cardiovascular reactions to acute psychological stress have been shown among those with substance and non-substance dependencies like exercise dependence. However, associations between exercise dependence and low cardiovascular reactions to stress have been demonstrated between small sex-specific groups with extreme exercise dependence scores. The present study sought to replicate previous findings as well as examine whether exercise dependence across the range of scores was linearly related to reactivity magnitude in a more diverse sample. Participants (n = 161, 65% female) undertook laboratory stress testing. Cardiovascular activity was measured at rest and in response to a 10-min Paced Auditory Serial Addition Test (PASAT). Exercise dependence was measured via three validated questionnaires. There were no significant linear associations between exercise dependence scores and blood pressure reactivity, with or without adjustment for covariates. In a subsample of females aged < 30 years, small negative associations emerged for blood pressure reactivity. Replication analyses of extreme groups created using the EABQ, as in prior work, showed no significant differences in reactivity, but there were some indications of low reactivity among individuals classified as exercise dependent on the EDQ. In conclusion, differences in stress reactivity may not be confined to extreme scoring groups and can also emerge as linear associations. However, the presence and form of these effects appear to be measure-, outcome- and sample-dependent.</p>","PeriodicalId":20913,"journal":{"name":"Psychophysiology","volume":"63 8","pages":"e70389"},"PeriodicalIF":3.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13507582/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148819509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Protocol to Acquire Infant Heart Rate Variability in the Rohingya Camps and Surrounding Communities in Cox's Bazar, Bangladesh.","authors":"Elisa Ugarte, Paul D Hastings, Eamam Hossain, Md Shakil Ahamed, A K Rahim, Mahbub Elahi, Md Sajjadur Rahman, Fahmida Tofail, Alice J Wuermli","doi":"10.1111/psyp.70356","DOIUrl":"10.1111/psyp.70356","url":null,"abstract":"<p><p>Regulation of autonomic arousal during infancy is critical for the development of self-regulation, socioemotional development and cognitive functioning. High frequency heart rate variability (HRV), a key indicator of parasympathetic nervous system function, supports physiological regulation and emerging behaviors that foster social engagement during this critical developmental period. However, research on HRV has largely been confined to controlled settings with highly resourced populations, limiting its applicability to culturally and contextually diverse populations. This study presents a protocol for collecting HRV data from 1-month-old infants in remote and low-resource field contexts, specifically, the Rohingya camps and surrounding host communities in Cox's Bazar, Bangladesh. We present a three-step process to address challenges inherent to working in such contexts while ensuring ecological validity and cultural sensitivity, navigating logistical challenges, and optimizing data quality. Data quality metrics in 148 infants showed high usability, with 86% of data being usable when infants were held by their mothers (joint condition), and 80% when they were alone (solo condition). Aligning with theoretical expectations, higher respiratory sinus arrhythmia (RSA, extracted from HRV) was negatively correlated with behavioral arousal (e.g., more alert, exhibiting motor activity) in both conditions. RSA also remained stable across 30-s segments within each baseline condition, indicating no systematic change in mean RSA levels across time. This study demonstrates a scalable, ethical approach to collecting HRV data in remote field settings, providing a foundation for exploring how early autonomic development intersects with proximal processes such as caregiving across diverse cultural contexts. This protocol aims to advance equity and inclusivity in developmental psychophysiology while maintaining rigorous scientific standards.</p>","PeriodicalId":20913,"journal":{"name":"Psychophysiology","volume":"63 8","pages":"e70356"},"PeriodicalIF":3.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13439163/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148674158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"eyeris: A Flexible, Extensible, and Reproducible Pupillometry Preprocessing Framework in R.","authors":"Shawn T Schwartz, Haopei Yang, Alice M Xue, Mingjian He","doi":"10.1111/psyp.70375","DOIUrl":"10.1111/psyp.70375","url":null,"abstract":"<p><p>Pupillometry provides a noninvasive window into the mind and brain, particularly as a psychophysiological readout of autonomic and cognitive processes like arousal, attention, stress, and emotional states. Pupillometry research lacks a robust, standardized framework for data preprocessing, whereas in functional magnetic resonance imaging and electroencephalography, researchers have converged on tools such as fMRIPrep, EEGLAB, and MNE-Python. Many established pupillometry preprocessing packages and workflows fall short of serving the goal of enhancing reproducibility, especially since most existing solutions lack designs based on Findability, Accessibility, Interoperability, and Reusability (FAIR) principles. To promote FAIR and open science practices for pupillometry research, we developed eyeris, a complete pupillometry preprocessing suite designed to be intuitive, modular, performant, and extensible (https://github.com/shawntz/eyeris). Out-of-the-box, eyeris provides a recommended preprocessing workflow and considers signal processing best practices for tonic and phasic pupillometry. Moreover, eyeris further enables open and reproducible science workflows, as well as quality control workflows by following a well-established file management schema and generating interactive output reports for both record keeping/sharing and quality assurance of preprocessed pupil data prior to formal analysis. Taken together, eyeris provides a robust all-in-one transparent and adaptive solution for high-fidelity pupillometry preprocessing with the aim of further improving reproducibility in pupillometry research.</p>","PeriodicalId":20913,"journal":{"name":"Psychophysiology","volume":"63 8","pages":"e70375"},"PeriodicalIF":3.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13469724/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148725547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Changes in Aperiodic (1/f Slope) Activity During a Picture-Word Interference Task: Effects of Congruency and Sequence Manipulations.","authors":"Virginia Tronelli, Patrycja Kałamała, Gabriele Gratton, Monica Fabiani, Mate Gyurkovics, Kathy A Low, Maurizio Codispoti, Andrea De Cesarei","doi":"10.1111/psyp.70376","DOIUrl":"10.1111/psyp.70376","url":null,"abstract":"<p><p>Aperiodic neural activity (1/f EEG) has been proposed to reflect the balance between excitatory and inhibitory (E/I) inputs, with steeper spectral slopes reflecting increased inhibition and flatter slopes indicating excitation. This activity is also thought to reflect the temporal coordination of neural firing, offering insights into fundamental brain dynamics. Recent studies have shown that the 1/f slope is sensitive to stimulus onset, characterized by initial inhibitory shifts followed by excitatory rebounds, which may reflect cognitive control mechanisms involved in suppressing distractions and preparing goal-directed responses. However, previous research has relied on fixed temporal windows and insufficient control of ERP contamination, limiting our understanding of rapid control dynamics. Here we used newly developed time-resolved analyses to study 1/f spectral slope modulation during a Picture-Word Interference task, focusing on two canonical cognitive control markers: the Congruency Effect (CE) and Congruency Sequence Effect (CSE). Forty-nine participants categorized pictures while ignoring congruent or incongruent words. Behaviorally, we replicated robust CE and CSE patterns. Spectral slope analyses showed that incongruent trials elicited steeper slopes-consistent with increased inhibition-particularly in frontal and central regions, reflecting conflict-related control engagement. Moreover, CSE analyses revealed dynamic slope modulations across frontal, central, and occipital components over time, suggesting control adjustments influenced by previous trial congruency. These results provide the first within-trial time-resolved evidence that aperiodic 1/f EEG activity can track both immediate conflict resolution and cognitive adjustments, offering a temporally sensitive neural marker of cognitive control, albeit with effects that are small in magnitude on average.</p>","PeriodicalId":20913,"journal":{"name":"Psychophysiology","volume":"63 8","pages":"e70376"},"PeriodicalIF":3.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13451924/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148689853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Beware of What You Expect? A Partial Replication Study on the Behavioral and Psychophysiological Effects of Negative Expectations on Mechanical Hypersensitivity.","authors":"Ketan P Jaltare, Martina D'Agostini, Lies De Voeght, Margot Kinnart, Diana M Torta, Emanuel N van den Broeke","doi":"10.1111/psyp.70364","DOIUrl":"10.1111/psyp.70364","url":null,"abstract":"<p><p>Mechanical hypersensitivity of uninjured skin surrounding a cutaneous injury is a sign of plasticity of the nociceptive system and can be induced in healthy individuals using high-frequency electrical stimulation (HFS). However, despite a broad body of evidence for acute painful stimuli, mixed results have been reported concerning the role of negative expectations in the development of mechanical hypersensitivity. Given the theoretical and clinical relevance of verbal suggestions' impact on the potential development of mechanical hypersensitivity, this study aimed to replicate previous positive findings and establish the effects of negative expectations and HFS on autonomic activity. Sixty participants were randomly assigned to a nocebo or control group, with high-frequency stimulation (HFS) administered to one forearm. Negative expectations were induced only in the nocebo group through written instructions. We assessed the perceived intensity and spatial extent of mechanical hypersensitivity, as well as resting and pinprick-evoked pupil dilation as proxies for tonic arousal and phasic locus coeruleus activity, respectively. No statistically significant group differences were found in mechanical hypersensitivity, its spatial spread, or resting pupil dilation. Pinprick-evoked pupil dilation in the area of mechanical hypersensitivity increased after HFS, but this effect emerged only when a less conservative preprocessing approach was used. Manipulation checks further indicated that some control participants formed negative expectations. Under the present experimental conditions, our results do not support the possibility that negative expectations worsen the development of mechanical sensitivity or increase autonomic responses.</p>","PeriodicalId":20913,"journal":{"name":"Psychophysiology","volume":"63 8","pages":"e70364"},"PeriodicalIF":3.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13486616/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148797623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}