International Journal of Psychophysiology最新文献

{"title":"Perceptual fluency affects recognition memory under deep encoding conditions promoting recollection: Evidence from an ERP study using letter-segregated method","authors":"Paweł Stróżak ,&nbsp;P. Andrew Leynes ,&nbsp;Kamil Taurogiński","doi":"10.1016/j.ijpsycho.2025.112506","DOIUrl":"10.1016/j.ijpsycho.2025.112506","url":null,"abstract":"<div><div>Perceptual fluency can increase familiarity of some of the items in recognition tests and enhance attributions of these items to the past. It is not clear, however, whether perceptual fluency can influence recognition under conditions promoting recollection-based memory. To this end, we performed a systematic replication of a study by Lucas and Paller (2013) using a letter-segregated method. We recorded ERPs while participants performed recognition task in letter segregated (LS) blocks, in which new words were always composed of different letters than old words, and in letter non-segregated (LNS) blocks, in which half of the new words came from the same letter pool as the studied words (new related words), and the other half came from the other pool (new unrelated words). Unlike the Lucas and Paller study, deep encoding promoted more recollection-based memory. In the LNS blocks, the comparison between old and new unrelated words revealed early (180–260 ms) P200 old/new effect, showing that recognition can be supported by an early discrimination of perceptual differences between studied and unstudied test probes. The relatively large hit rates and relatively high sensitivity measures, as well as the late (500–700 ms) LPC old/new effects in both blocks, indicated high levels of recollection for old words. Still, recognition memory was more accurate in the LS blocks, whereas in the LNS blocks there were more false alarms for new related than for new unrelated words. This suggests that perceptual fluency derived from low-level information may influence not only familiarity, but also recollection-based memory judgments.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"208 ","pages":"Article 112506"},"PeriodicalIF":2.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142959156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Utilizing movement-related potentials to monitor cognitive rehabilitation in individuals with central nervous system disorders: A review","authors":"Giuseppe A. Chiarenza ,&nbsp;Jorge Bosch-Bayard","doi":"10.1016/j.ijpsycho.2024.112485","DOIUrl":"10.1016/j.ijpsycho.2024.112485","url":null,"abstract":"<div><div>In current neuroscience, there is a pressing need to evaluate the effectiveness of treatments for motor and cognitive disorders. In addition, there is a gap in the literature on assessing this type of rehabilitation. This review proposes using Movement-Related Potentials (MRPs) as a relevant marker for such evaluations. The method employed involves administering a psychomotor task known as the Skilled Performance Task (SPT). Originally described in 1980 by Papakostopoulos, the SPT requires specific abilities, such as bimanual coordination, adaptive programming, and precise timing. Subjects must start and stop a sweep on an oscilloscope screen with accurate timing, receiving immediate feedback that aids in performance improvement. This self-paced, goal-directed, and interactive task ensures continuous engagement and learning. Suitable for all ages, the SPT provides real-time feedback and demands constant attention and reprogramming of movements, making it an effective tool for assessing and promoting cognitive rehabilitation through neuroplasticity. The originality of this task lies in the ability to obtain, with a single motor act, a series of potentials that represent different stages of the processing of a goal-directed and self-initiated action. The MRPs associated with this task are the Bereitschaftspotential (BP), the Motor Cortex Potential (MCP), the N100, the P200, the Skilled Performance Positivity (SPP) and the Post-Action Negativity (PAN). The present study reinterprets previous research conducted on children and adults with various central nervous system pathologies, from a cognitive rehabilitation perspective, to provide new insights into neurorehabilitation techniques utilizing MRPs.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"208 ","pages":"Article 112485"},"PeriodicalIF":2.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142824894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Startle potentiation to unpredictable threat predicts adolescent development of generalized anxiety disorder","authors":"Srinidhi Jayakumar,&nbsp;Rachel Ferry,&nbsp;Thomas J. Harrison,&nbsp;Brady D. Nelson ,&nbsp;Daniel N. Klein","doi":"10.1016/j.ijpsycho.2024.112490","DOIUrl":"10.1016/j.ijpsycho.2024.112490","url":null,"abstract":"<div><h3>Background</h3><div>An elevated startle reflex in anticipation of unpredictable threat has been associated with concurrent anxiety disorders. However, only one study to date has examined whether startle potentiation in anticipation of unpredictable threat predicts the development of anxiety disorders.</div></div><div><h3>Method</h3><div>In a community sample of 309 adolescents, we examined whether the startle reflex in anticipation of predictable or unpredictable threat at age 15 predicted onset of generalized anxiety disorder (GAD) and social anxiety disorder (SAD) at age 18. To evaluate the specificity of these relationships, we also examined the development of depressive disorders. Startle reflex was measured using the no, predictable, and unpredictable threat task at age 15. Semi-structured diagnostic interviews were administered at both waves to assess lifetime anxiety disorders and depression.</div></div><div><h3>Results</h3><div>Average startle reflex and startle potentiation to unpredictable, but not predictable, threat at age 15 predicted GAD at age 18, independent of lifetime GAD through age 15 and lifetime depression through age 18. Startle responses at age 15 did not predict SAD or depression at age 18.</div></div><div><h3>Conclusions</h3><div>The present study suggests that elevated startle potentiation in anticipation of unpredictable threat is a risk factor for the development of GAD in adolescence.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"208 ","pages":"Article 112490"},"PeriodicalIF":2.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142878640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of cardiac and respiratory phases on auditory evoked potentials","authors":"Keita Mizuhara ,&nbsp;Lingjun Li ,&nbsp;Hiroshi Nittono","doi":"10.1016/j.ijpsycho.2025.112521","DOIUrl":"10.1016/j.ijpsycho.2025.112521","url":null,"abstract":"<div><div>Brain-body interactions play a crucial role in the perceptual and cognitive processing of external stimuli. Previous research has examined how cardiac phases (systole, diastole) and respiratory phases (inhalation, exhalation) influence various psychological functions, though findings on their impact on auditory processing remain inconsistent. This study investigated whether cardiac and respiratory phases affect auditory ERP components, specifically N1 and P2. To control for cardiac-related artifacts, pure tones (70 dB) and silent stimuli (0 dB) were presented in alternating, randomized intervals, and ERP difference waveforms were computed by subtracting waveforms elicited by silent stimuli from those elicited by tones. Two experiments were conducted with different participants: watching a video while ignoring the tones (Experiment 1) or pressing a button as quickly as possible in response to the tones while watching the video (Experiment 2). Results showed no significant differences in N1 amplitude between cardiac or respiratory phases. P2 amplitude was significantly larger at diastole than systole, although the effect size was small (<em>d</em>_z = 0.26). For respiratory phases, P2 amplitude was greater during exhalation than inhalation when participants ignored the tones (<em>d</em>_z = 0.35), but this effect disappeared when they attended to the tones. These findings suggest that visceral afferent signals may influence auditory processing by modulating attentional resource allocation across different cardiac and respiratory phases.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"209 ","pages":"Article 112521"},"PeriodicalIF":2.5,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143082309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Attenuation of auditory Tb and N200 in response to self-modulated tones during continuous actions reflects the prediction of action consequences","authors":"Fumie Sugimoto,&nbsp;Motohiro Kimura,&nbsp;Yuji Takeda","doi":"10.1016/j.ijpsycho.2025.112522","DOIUrl":"10.1016/j.ijpsycho.2025.112522","url":null,"abstract":"<div><div>Event-related potentials (ERPs) in response to tones modulated by one's own continuous actions (i.e., turning a steering wheel) are attenuated compared to those in response to tones presented externally. We investigated whether the ERP attenuation by continuous actions reflects a prediction of action consequences or a decrease in attentional resources available for auditory processing during the performance of actions. To compare these hypotheses, ERPs were measured in two conditions. In the modulation condition, participants modulated the pitch of tones by turning a steering wheel (i.e., frequent regular tones), and tones with an inconsistent pitch were occasionally presented among the regular tones (i.e., infrequent irregular tones). In the listening condition, participants listened to the same tones as in the modulation condition without performing any action. We expected that the irregular tones would elicit N2 and P3 (i.e., prediction errors) and their amplitudes should increase in the modulation than listening conditions, if more precise prediction was generated based on continuous actions; in contrast, they should decrease in the modulation than listening conditions, if attentional resources available for auditory processing decreased during continuous actions. The results showed that the amplitudes of Tb and N200 to regular tones decreased in the modulation than listening conditions, replicating the previous finding. Importantly, the amplitudes of N2 and P3 to irregular tones increased in the modulation than listening conditions. These results indicate that more precise prediction of action consequences underlies the ERP attenuation during continuous actions, which may contribute to efficient action adjustments in everyday life.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"209 ","pages":"Article 112522"},"PeriodicalIF":2.5,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143082307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the role of sex, sex steroids, menstrual cycle, and hormonal contraception use in visual working memory: Insights from behavioral and EEG analyses","authors":"Rimantė Gaižauskaitė ,&nbsp;Lina Gladutytė ,&nbsp;Ingrida Zelionkaitė,&nbsp;Ramunė Grikšienė","doi":"10.1016/j.ijpsycho.2025.112520","DOIUrl":"10.1016/j.ijpsycho.2025.112520","url":null,"abstract":"<div><div>Sex hormones have been shown to influence cognitive and emotional processes, yet their effects on visual working memory (VWM) are poorly understood. This study aimed to investigate the relationship between VWM, sex, and female hormonal status in participants aged 18–35 years. We recruited 32 males (M) and 133 females, categorized into four groups: naturally cycling females in the early follicular (NCF, <em>n</em> = 33) and mid-luteal (NCL, <em>n</em> = 35) phases of the menstrual cycle, oral contraceptive (OC, <em>n</em> = 37), and intrauterine device users (IUD, <em>n</em> = 28). Participants completed a bilateral change detection task while behavioral and EEG data were recorded. We evaluated VWM performance and associated brain electrophysiological responses, specifically Contralateral Delay Activity (CDA). Salivary levels of testosterone, progesterone, and estradiol were assessed. We found no systematic differences in VWM task performance or CDA between groups, nor any correlations with hormone levels. However, an exception to this was that NCF females performed worse than OC users when recalling four items. Age emerged as a significant covariate, with greater age being linked to poorer performance. An interaction between age and group in memory capacity highlighted differential patterns of age-related cognitive decline across sexes and female hormonal status groups.</div><div>These findings provide valuable insights into the broader relationship between sex, sex hormones, and cognition. They suggest that in studies employing a between-subject design, hormone-dependent differences in more complex processes, such as visuospatial performance, are unlikely to stem from the role of sex hormones in VWM and may instead arise from other factors.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"209 ","pages":"Article 112520"},"PeriodicalIF":2.5,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interrupting sitting with moderate-intensity physical activity breaks improves cognitive processing speed in adults with overweight and obesity: Findings from the SITLess pilot randomized crossover trial","authors":"Dominika M. Pindus ,&nbsp;Kathryn M. Lloyd ,&nbsp;Tomasz S. Ligeza ,&nbsp;A. Askow ,&nbsp;C. McKenna ,&nbsp;Neha Bashir ,&nbsp;Hannah Martin ,&nbsp;Flor B. Quiroz ,&nbsp;Bryan Montero Herrera ,&nbsp;Corrinne Cannavale ,&nbsp;Jin Kuang ,&nbsp;Qian Yu ,&nbsp;Maciej Kos ,&nbsp;Candace S. Brown ,&nbsp;Tayla von Ash ,&nbsp;Liye Zou ,&nbsp;Nicholas A. Burd ,&nbsp;Naiman A. Khan ,&nbsp;Arthur F. Kramer ,&nbsp;Charles H. Hillman","doi":"10.1016/j.ijpsycho.2025.112519","DOIUrl":"10.1016/j.ijpsycho.2025.112519","url":null,"abstract":"<div><h3>Introduction</h3><div>Prolonged sitting can acutely reduce working memory (WM) in individuals with overweight and obesity (OW/OB) who show executive function deficits. Interrupting prolonged sitting with brief PA bouts may counter these effects. However, the benefits of such interventions on behavioral and neuroelectric indices of WM and whether neurocognitive responses are associated with postprandial glycemic responses in young and middle-aged adults with OW/OB remain unknown. To address this gap, this study examined the acute effects of interrupting three-hour prolonged sitting every 30 min with 3.5-min moderate-intensity physical activity (MPA) bouts (MPA + SIT condition) relative to sedentary social interaction condition (SOC + SIT) on behavioral measures of WM and the P3b component of event-related potentials (ERP) in young and middle-aged adults with OW/OB.</div></div><div><h3>Method</h3><div>Nineteen adults with OW/OB (63 % females; 29.9 ± 7.5 years; BMI = 30.0 ± 3.64 kg*m⁻²) were included in the SITLess pilot randomized crossover trial. Choice RT and WM were measured before, after, and four times during each condition with 1- and 2-back letter tasks. They were expressed as the incremental area under the curve (iAUC). Choice RT was expressed as d-prime, target, and nontarget accuracy, and RT on the 1-back and nontarget RT on the 2-back task. WM was expressed as d-prime, target accuracy, and RT on the 2-back task. The amplitude of the P3b-ERP component was used to measure attentional resource allocation during both tasks; the P3b-ERP fractional area latency measured cognitive processing before and after each condition. Two-hour postprandial glycemic responses (expressed as iAUC) were measured using an oral glucose tolerance test (OGTT). Time (pre, post) x Condition (MPA + SIT vs. SOC + SIT) interactions and the main effect of Condition (iAUCs) were tested using Linear Mixed Models.</div></div><div><h3>Results</h3><div>No significant intervention effects on glucose were noted (<em>p</em> = 0.74). Compared to SOC + SIT, MPA + SIT resulted in shorter 1-back target P3b latency (<em>F</em>(1, 17.0) = 5.14, <em>p</em> = 0.037; <em>M</em>_diff = −9.77, <em>SE</em> = 4.31 ms, 95%CI: −18.9, −0.68) at post-test. No effects on behavioral measures were noted (<em>p</em>s ≥ 0.06). However, the between-condition difference in 1-back P3b latency correlated positively with the between-condition difference in RTs on 1-back;shorter P3b latency was related to shorter RTs in the MPA + SIT relative to SOC + SIT (<em>r</em> = 0.65 and 0.55 for target and nontarget trials, <em>ps</em> ≤ 0.02).</div></div><div><h3>Conclusion</h3><div>Interrupting sitting with short MPA bouts can enhance some aspects of cognitive processing in adults with OW/OB. Future studies are needed to better understand behavioral responses to interrupting prolonged sitting with MPA bouts and the underlying mechanisms.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"209 ","pages":"Article 112519"},"PeriodicalIF":2.5,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143069645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 Plague(d) Tale: Are violent video games effective in reducing stress levels?","authors":"Gary L. Wagener,&nbsp;André Schulz,&nbsp;André Melzer","doi":"10.1016/j.ijpsycho.2025.112518","DOIUrl":"10.1016/j.ijpsycho.2025.112518","url":null,"abstract":"<div><div>Stress relief is often cited as the main motive for playing video games. However, the effectiveness of video games in coping with stress, especially when comparing violent and non-violent genres, remains uncertain. In the present lab experiment with <em>N</em> = 82 participants, we assessed acute stress reduction after playing a violent vs. non-violent video game that followed stress induction using the Socially Evaluated Cold Pressor Test. We hypothesized that playing video games causes physiological (i.e., an increase in heart rate variability and a decrease in cortisol) and self-reported effects of stress relief, and a reduction in aggression levels, leading to restoration. Aggressive behavior was measured as self-reports and seconds in the Cold Pressor Test allocated to the next participant. In line with previous studies, participants playing a violent passage of a game reported feeling more stressed and aggressive, while those playing a non-violent passage of the same game felt less stressed and more relaxed. In contrast, however, we found an increase in heart rate variability as well as a decrease in heart rate and cortisol regardless of playing group, which indicates relaxation. This dissociation between self-reported and physiological stress results indicates that the own state of arousal is incorrectly assessed. This may be due to a different cognitive assessment of the characteristics of the respective game groups, as the violent game sequence was judged to be more difficult and challenging. However, the observed physiological relaxation effect might also suggest the potential of video game engagement for stress interventions.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"209 ","pages":"Article 112518"},"PeriodicalIF":2.5,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143043380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The relationship between behavioral inhibition and resting electroencephalography: A neuroelectrophysiological study","authors":"Mengsi Xu ,&nbsp;Yanxi Xu ,&nbsp;Shiyan Wu ,&nbsp;Zhiai Li","doi":"10.1016/j.ijpsycho.2025.112516","DOIUrl":"10.1016/j.ijpsycho.2025.112516","url":null,"abstract":"<div><div>Investigating the neurophysiological indicators of behavioral inhibition is crucial; however, despite numerous studies on the relationship between behavioral inhibition and resting-state electroencephalography (rs-EEG), the findings have yielded inconsistent results. Furthermore, these investigations primarily focused on reactive inhibition while neglecting intentional inhibition. Therefore, this study aimed to reassess the correlation between reactive inhibition and rs-EEG metrics while also exploring the association between intentional inhibition and rs-EEG. Power spectrum analysis and microstate analysis were employed to extract rs-EEG, whereas the Free Two-Choice Oddball task was utilized for assessing both reactive and intentional inhibition among 95 participants. The results revealed no significant correlations between reactive inhibition and rs-EEG metrics. However, intentional inhibition exhibited a negative correlation with relative power in delta and beta bands but a positive correlation with relative power in alpha band. Moreover, intentional inhibition demonstrated a negative correlation with occurrence rate and contribution of microstate A but a positive correlation with duration of microstate D. Additionally, it displayed a negative relationship with the transition probability between microstate A and C but a positive relationship with the transition probability between microstate C and D. The regression analysis revealed that the occurrence rate of microstate A can negatively predict intentional inhibition. Overall, this study advances theoretical understanding as well as empirical research in this field by addressing gaps in rs-EEG evidence for intentional inhibition while providing potential neuropsychological indicators for its assessment.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"209 ","pages":"Article 112516"},"PeriodicalIF":2.5,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143025541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Loneliness mediates the association between trait social anxiety and cardiovascular reactivity to acute psychological stress","authors":"Adam O'Riordan ,&nbsp;Aisling M. Costello","doi":"10.1016/j.ijpsycho.2025.112517","DOIUrl":"10.1016/j.ijpsycho.2025.112517","url":null,"abstract":"<div><div>The primary aims of the current study are (1) to examine the association between trait social anxiety and cardiovascular reactivity to acute psychological stress, and (2) to identify if loneliness significantly mediates the association between trait social anxiety and cardiovascular reactivity. A sample of 658 participants completed a cardiovascular reactivity protocol consisting of a resting baseline and stressor phase (mental arithmetic and Stroop), with systolic blood pressure (SBP), diastolic blood pressure (DBP) and heart rate (HR) monitored throughout. Participants also completed self-reported measures assessing social anxiety and loneliness. Social anxiety was associated with increased self-reported stress. However, no significant associations between social anxiety and measures of cardiovascular reactivity were observed in regression analyses. Loneliness was significantly associated with lower SBP and DBP reactivity. Additionally, loneliness significantly mediated the association between trait social anxiety and both SBP reactivity and DBP reactivity. Here, trait social anxiety predicted greater levels of loneliness, which in turn was associated with diminished cardiovascular reactivity. No significant associations emerged for HR reactivity. These blunted blood pressure responses to acute stress may indicate a potential mechanism leading to adverse prospective health outcomes.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"209 ","pages":"Article 112517"},"PeriodicalIF":2.5,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143025532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}