Pub Date : 2025-01-01DOI: 10.1016/j.ijpsycho.2024.112492
Aoife Whiston, Tracey M. Keogh, Siobhán Howard, Stephen Gallagher
Blunted cardiovascular reactions in response to acute psychological stress are predictive of future health risk. A large body of research has identified depression as an influential factor associated with blunted cardiovascular reactivity. Separately, there has been a resurgence in focus on anhedonia as a key feature of depression, responsible for poor treatment responses to non-improvement in cardiac event–free survival. In a re-analysis of a previously published study that found depression to be associated with blunted systolic blood pressure (SBP) and heart rate responses (HR), we used cross-sectional network models to examine if anhedonia symptoms were key drivers of this observation. Healthy young adults (N = 180) completed measures of depression symptoms (Hospital Anxiety and Depression Scale (HADS)) and had their blood pressure and heart rate monitored throughout a standardized stress testing protocol. Using network analysis, a Walktrap algorithm identified two clusters of depressive symptoms: anhedonia and non-anhedonia. These anhedonia symptoms of depression, but not the non-anhedonia symptoms, were associated with blunted SBP and HR reactivity, such that those scoring higher on HADS-D items capturing anhedonia displayed more blunted cardiovascular response profiles. Moreover, these findings were robust to adjustment for several covariates. This study adds greater clarity on the depression-cardiovascular reactivity to stress association, by demonstrating that anhedonia is a key driver of this observation.
{"title":"Depression and cardiovascular reactions to acute psychological stress: Is anhedonia the driver?","authors":"Aoife Whiston, Tracey M. Keogh, Siobhán Howard, Stephen Gallagher","doi":"10.1016/j.ijpsycho.2024.112492","DOIUrl":"10.1016/j.ijpsycho.2024.112492","url":null,"abstract":"<div><div>Blunted cardiovascular reactions in response to acute psychological stress are predictive of future health risk. A large body of research has identified depression as an influential factor associated with blunted cardiovascular reactivity. Separately, there has been a resurgence in focus on anhedonia as a key feature of depression, responsible for poor treatment responses to non-improvement in cardiac event–free survival. In a re-analysis of a previously published study that found depression to be associated with blunted systolic blood pressure (SBP) and heart rate responses (HR), we used cross-sectional network models to examine if anhedonia symptoms were key drivers of this observation. Healthy young adults (<em>N</em> = 180) completed measures of depression symptoms (Hospital Anxiety and Depression Scale (HADS)) and had their blood pressure and heart rate monitored throughout a standardized stress testing protocol. Using network analysis, a Walktrap algorithm identified two clusters of depressive symptoms: anhedonia and non-anhedonia. These anhedonia symptoms of depression, but not the non-anhedonia symptoms, were associated with blunted SBP and HR reactivity, such that those scoring higher on HADS-D items capturing anhedonia displayed more blunted cardiovascular response profiles. Moreover, these findings were robust to adjustment for several covariates. This study adds greater clarity on the depression-cardiovascular reactivity to stress association, by demonstrating that anhedonia is a key driver of this observation.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"207 ","pages":"Article 112492"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142883605","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}
Pub Date : 2025-01-01DOI: 10.1016/j.ijpsycho.2024.112486
Satish Jaiswal , Jason Nan , Suzanna R. Purpura , James K. Manchanda , Niranjala Yogaratnam , Dhakshin Ramanathan , Jyoti Mishra
Childhood trauma (CT) has been consistently linked with etiology of anxiety and depression. Finding biomarkers that mediate the relationship between CT and psychopathology is important and electroencephalography (EEG) can be a useful and cost-effective tool serving this purpose. Hence, in the current research we investigated resting state EEG biomarkers associated with CT and how these may link to psychopathology of anxiety and depression in adults. A total of 324 community recruited participants (age range 15–93 years) completed standard self-report scales of CT, anxiety and depression, and also underwent an eyes-closed resting state EEG recording session. Based on several functional neuroimaging studies, which have shown that connectivity in the salience network with major nodes in the anterior cingulate cortex (ACC) and insula is modulated by CT, we derived salience network connectivity measures from resting state EEG source imaging. Also given that theta band (3–7 Hz) neural oscillations have been shown to have an ACC source, we specifically focused on theta band salience network connectivity. The results showed significant positive correlation between CT and both anxiety and depression. We also found that theta band salience network connectivity, but not network activity, had a significant inverse relationship with CT and specifically mediated the relationship between CT and anxiety, but not depression. Interrogating the subcomponents of CT, theta connectivity in the salience network mediated the relationship between anxiety and both emotional abuse and physical neglect. These results showcase the utility of a resting state EEG source imaging-based biomarker in understanding the mechanistic associations between CT and psychopathology in community dwelling individuals.
{"title":"Resting state EEG source derived salience network theta connectivity mediates anxiety in community dwelling individuals reporting childhood trauma","authors":"Satish Jaiswal , Jason Nan , Suzanna R. Purpura , James K. Manchanda , Niranjala Yogaratnam , Dhakshin Ramanathan , Jyoti Mishra","doi":"10.1016/j.ijpsycho.2024.112486","DOIUrl":"10.1016/j.ijpsycho.2024.112486","url":null,"abstract":"<div><div>Childhood trauma (CT) has been consistently linked with etiology of anxiety and depression. Finding biomarkers that mediate the relationship between CT and psychopathology is important and electroencephalography (EEG) can be a useful and cost-effective tool serving this purpose. Hence, in the current research we investigated resting state EEG biomarkers associated with CT and how these may link to psychopathology of anxiety and depression in adults. A total of 324 community recruited participants (age range 15–93 years) completed standard self-report scales of CT, anxiety and depression, and also underwent an eyes-closed resting state EEG recording session. Based on several functional neuroimaging studies, which have shown that connectivity in the salience network with major nodes in the anterior cingulate cortex (ACC) and insula is modulated by CT, we derived salience network connectivity measures from resting state EEG source imaging. Also given that theta band (3–7 Hz) neural oscillations have been shown to have an ACC source, we specifically focused on theta band salience network connectivity. The results showed significant positive correlation between CT and both anxiety and depression. We also found that theta band salience network connectivity, but not network activity, had a significant inverse relationship with CT and specifically mediated the relationship between CT and anxiety, but not depression. Interrogating the subcomponents of CT, theta connectivity in the salience network mediated the relationship between anxiety and both emotional abuse and physical neglect. These results showcase the utility of a resting state EEG source imaging-based biomarker in understanding the mechanistic associations between CT and psychopathology in community dwelling individuals.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"207 ","pages":"Article 112486"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142820380","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}
Affective modulation of startle reflex (AMSR) is a widely used experimental tool for assessing emotional reactivity. Previous research has shown inconsistent findings of emotional reactivity in amplitude in bipolar patients (BP). This study examined emotional reactivity (ER) in euthymic BP compared to healthy controls using both subjective and objective measures.
Method
This study compared ER between 33 euthymic BP (I and II) and 35 healthy controls. Subjective experiences, valence, and arousal scores were assessed using the Self-Assessment Manikin. Objective measures included startle reflex parameters - amplitude, area, and latency - from the orbicularis oculi muscle via electromyography. To assess the AMSR, pictures of varying emotional valences from the International Affective Picture System were used during acoustic stimulation.
Results
A significant picture category effect was observed in the subjective picture evaluation; however, no substantial group effect or picture category-group interaction was detected. In the controls, picture categories exerted a significant effect on amplitude, but did not in euthymic BP. A linear pattern of startle amplitude across different picture categories was evident in the control group but not in patients. Analyses of the area did not reveal significant group differences. Onset latency was also similar between groups.
Conclusion
This study indicates impaired emotional processing in euthymic individuals with bipolar disorder, as shown by altered startle reflex measurements. Future research with larger samples and consideration of bipolar disorder subtypes is needed to explore these findings further.
{"title":"Affective modulation of emotional reactivity in euthymic patients with bipolar disorder","authors":"Nilgun Oktar Erdogan , Cagrı Mesut Temucin , Koray Başar , Zumrut Duygu Sen , Suzan Ozer","doi":"10.1016/j.ijpsycho.2024.112487","DOIUrl":"10.1016/j.ijpsycho.2024.112487","url":null,"abstract":"<div><h3>Background</h3><div>Affective modulation of startle reflex (AMSR) is a widely used experimental tool for assessing emotional reactivity. Previous research has shown inconsistent findings of emotional reactivity in amplitude in bipolar patients (BP). This study examined emotional reactivity (ER) in euthymic BP compared to healthy controls using both subjective and objective measures.</div></div><div><h3>Method</h3><div>This study compared ER between 33 euthymic BP (I and II) and 35 healthy controls. Subjective experiences, valence, and arousal scores were assessed using the Self-Assessment Manikin. Objective measures included startle reflex parameters - amplitude, area, and latency - from the orbicularis oculi muscle via electromyography. To assess the AMSR, pictures of varying emotional valences from the International Affective Picture System were used during acoustic stimulation.</div></div><div><h3>Results</h3><div>A significant picture category effect was observed in the subjective picture evaluation; however, no substantial group effect or picture category-group interaction was detected. In the controls, picture categories exerted a significant effect on amplitude, but did not in euthymic BP. A linear pattern of startle amplitude across different picture categories was evident in the control group but not in patients. Analyses of the area did not reveal significant group differences. Onset latency was also similar between groups.</div></div><div><h3>Conclusion</h3><div>This study indicates impaired emotional processing in euthymic individuals with bipolar disorder, as shown by altered startle reflex measurements. Future research with larger samples and consideration of bipolar disorder subtypes is needed to explore these findings further.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"207 ","pages":"Article 112487"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142820379","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}
Pub Date : 2025-01-01DOI: 10.1016/j.ijpsycho.2024.112480
Hannes Per Carsten , Kai Härpfer , Marcelo Malbec , Matthias J. Wieser , Anja Riesel
Overactive error monitoring—as measured by the error-related negativity (ERN)—is a candidate transdiagnostic risk marker for internalizing psychopathology. Previous research reported associations of the ERN and individual differences in intolerance of uncertainty (IU). These findings imply associations between the subconstructs of IU (prospective and inhibitory IU) and the ERN, which we sought to replicate and extend by testing for causal influences that might elucidate specific mechanisms underlying this association. To test associations of uncertainty and the ERN, a preregistered, randomized-controlled design was employed. After measuring the baseline ERN of N = 120 university students, a subsample was randomly assigned to two groups: While an intervention group (n = 30) performed an unsolvable probabilistic “learning” task intended to induce state uncertainty, a passive control group (n = 30) rested. Subsequently, the ERN was assessed again. Self-reported uncertainty was assessed before and after the intervention. To further increase the statistical power of the replication attempt, we performed a correlation analysis (non-preregistered) by including data from two additional samples collected at different study sites. This analysis comprised psychophysiological data from a total of N = 355 participants. Cross-sectionally, no effects of IU on the ERN emerged. Regarding the state uncertainty induction, the intervention group displayed increased self-reported uncertainty after the intervention, but no evidence emerged for ERN alterations attributable to the intervention. The link between individual differences in IU and the ERN might be smaller and less robust than previous findings suggest, reflecting the understudied character of this association. The absence of evidence for mechanistic changes in the ERN due to a successful induction of state uncertainty further questions a link between IU and the ERN. In line with previous studies that linked increased ERN to anxiety, independent of current clinical status, the ERN seems unaffected by short-term changes such as symptom provocations in non-clinical populations.
{"title":"Are errors more aversive in an uncertain world? Testing the influence of uncertainty on the error-related negativity in a randomized controlled trial","authors":"Hannes Per Carsten , Kai Härpfer , Marcelo Malbec , Matthias J. Wieser , Anja Riesel","doi":"10.1016/j.ijpsycho.2024.112480","DOIUrl":"10.1016/j.ijpsycho.2024.112480","url":null,"abstract":"<div><div>Overactive error monitoring—as measured by the error-related negativity (ERN)—is a candidate transdiagnostic risk marker for internalizing psychopathology. Previous research reported associations of the ERN and individual differences in intolerance of uncertainty (IU). These findings imply associations between the subconstructs of IU (prospective and inhibitory IU) and the ERN, which we sought to replicate and extend by testing for causal influences that might elucidate specific mechanisms underlying this association. To test associations of uncertainty and the ERN, a preregistered, randomized-controlled design was employed. After measuring the baseline ERN of <em>N</em> = 120 university students, a subsample was randomly assigned to two groups: While an intervention group (<em>n</em> = 30) performed an unsolvable probabilistic “learning” task intended to induce state uncertainty, a passive control group (<em>n</em> = 30) rested. Subsequently, the ERN was assessed again. Self-reported uncertainty was assessed before and after the intervention. To further increase the statistical power of the replication attempt, we performed a correlation analysis (non-preregistered) by including data from two additional samples collected at different study sites. This analysis comprised psychophysiological data from a total of <em>N</em> = 355 participants. Cross-sectionally, no effects of IU on the ERN emerged. Regarding the state uncertainty induction, the intervention group displayed increased self-reported uncertainty after the intervention, but no evidence emerged for ERN alterations attributable to the intervention. The link between individual differences in IU and the ERN might be smaller and less robust than previous findings suggest, reflecting the understudied character of this association. The absence of evidence for mechanistic changes in the ERN due to a successful induction of state uncertainty further questions a link between IU and the ERN. In line with previous studies that linked increased ERN to anxiety, independent of current clinical status, the ERN seems unaffected by short-term changes such as symptom provocations in non-clinical populations.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"207 ","pages":"Article 112480"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142796493","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}
Pub Date : 2025-01-01DOI: 10.1016/j.ijpsycho.2024.112483
Gaby Pfeifer , Sophie Cawkwell
Interoception, the perception and response to internal bodily states, significantly influences physical and mental wellbeing. While ageing is associated with interoceptive decline, research has primarily examined selective dimensions of interoception. Understanding these changes is vital as the global population ages, addressing age-related health issues and sustaining psychological wellbeing. This systematic review synthesised findings from 22 studies on age-related interoceptive changes and their impact on psychophysiological processes. Results showed age-related declines (48.4 %), no age differences (32.3 %), an age-related increase (16.13 %), and an inverted U-shaped curvilinear relationship (3.23 %) in interoceptive sensitivity across age groups and interoceptive dimensions. Three patterns emerged regarding psychophysiological processes in older adults: altered mind-body connections with age were associated with reduced high-arousal and increased positive emotional experiences, cognitive protective effects, and improved body representation that correlated with better interoceptive sensitivity. These patterns indicate the complex relationships between interoceptive ageing and psychophysiological processes, showing both, aspects of decline and compensatory mechanisms. We propose future research avenues to elucidate the functional significance of different interoceptive dimensions across the lifespan for optimised psychological wellbeing and health behaviours in older adults.
{"title":"Interoceptive ageing and the impact on psychophysiological processes: A systematic review","authors":"Gaby Pfeifer , Sophie Cawkwell","doi":"10.1016/j.ijpsycho.2024.112483","DOIUrl":"10.1016/j.ijpsycho.2024.112483","url":null,"abstract":"<div><div>Interoception, the perception and response to internal bodily states, significantly influences physical and mental wellbeing. While ageing is associated with interoceptive decline, research has primarily examined selective dimensions of interoception. Understanding these changes is vital as the global population ages, addressing age-related health issues and sustaining psychological wellbeing. This systematic review synthesised findings from 22 studies on age-related interoceptive changes and their impact on psychophysiological processes. Results showed age-related declines (48.4 %), no age differences (32.3 %), an age-related increase (16.13 %), and an inverted U-shaped curvilinear relationship (3.23 %) in interoceptive sensitivity across age groups and interoceptive dimensions. Three patterns emerged regarding psychophysiological processes in older adults: altered mind-body connections with age were associated with reduced high-arousal and increased positive emotional experiences, cognitive protective effects, and improved body representation that correlated with better interoceptive sensitivity. These patterns indicate the complex relationships between interoceptive ageing and psychophysiological processes, showing both, aspects of decline and compensatory mechanisms. We propose future research avenues to elucidate the functional significance of different interoceptive dimensions across the lifespan for optimised psychological wellbeing and health behaviours in older adults.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"207 ","pages":"Article 112483"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142808648","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}
Pub Date : 2024-12-01DOI: 10.1016/S0167-8760(24)00174-0
{"title":"International Organization of Psychophysiology","authors":"","doi":"10.1016/S0167-8760(24)00174-0","DOIUrl":"10.1016/S0167-8760(24)00174-0","url":null,"abstract":"","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"206 ","pages":"Article 112470"},"PeriodicalIF":2.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143128729","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}
Pub Date : 2024-11-28DOI: 10.1016/j.ijpsycho.2024.112467
Jinyu Chen , Irene van de Vijver , Evan Canny , J. Leon Kenemans , Johanna M.P. Baas
Successful reappraisal modulates the impact of emotion-inducing stimuli through reinterpretation of their meaning and decreases subjective emotional experience. Here the question is addressed how the altered emotional experience is related to altered electro-cortical responses, and about the neural mechanisms underlying regulation itself. To this end, we recorded EEG during a cued emotion-regulation paradigm including negative and neutral pictures. Firstly, based on hypothesis-driven analysis of the Late Positive Potential (LPP), we found that the early fronto-centro-parietal LPP (400–1000 ms) increased when passively viewing negative versus neutral pictures. Reappraisal did not decrease this LPP. Instead, only during reappraisal, the emotion effect on the parietal LPP was sustained until the picture offset. Secondly, we applied a localizer approach to uncover reappraisal effects with other spatiotemporal characteristics than the traditional LPP but did not observe such effects. Despite indications of theta oscillations being associated with cognitive and/or affective control, no significant effects were found on theta activity for emotion processing or reappraisal. Our findings suggest that emotion regulation may affect the LPP in several ways, depending on the task design and including affective as well as more cognitive influences. A potential role for theta in emotion regulation remains to be elucidated.
{"title":"The neural correlates of emotion processing and reappraisal as reflected in EEG","authors":"Jinyu Chen , Irene van de Vijver , Evan Canny , J. Leon Kenemans , Johanna M.P. Baas","doi":"10.1016/j.ijpsycho.2024.112467","DOIUrl":"10.1016/j.ijpsycho.2024.112467","url":null,"abstract":"<div><div>Successful reappraisal modulates the impact of emotion-inducing stimuli through reinterpretation of their meaning and decreases subjective emotional experience. Here the question is addressed how the altered emotional experience is related to altered electro-cortical responses, and about the neural mechanisms underlying regulation itself. To this end, we recorded EEG during a cued emotion-regulation paradigm including negative and neutral pictures. Firstly, based on hypothesis-driven analysis of the Late Positive Potential (LPP), we found that the early fronto-centro-parietal LPP (400–1000 ms) increased when passively viewing negative versus neutral pictures. Reappraisal did not decrease this LPP. Instead, only during reappraisal, the emotion effect on the parietal LPP was sustained until the picture offset. Secondly, we applied a localizer approach to uncover reappraisal effects with other spatiotemporal characteristics than the traditional LPP but did not observe such effects. Despite indications of theta oscillations being associated with cognitive and/or affective control, no significant effects were found on theta activity for emotion processing or reappraisal. Our findings suggest that emotion regulation may affect the LPP in several ways, depending on the task design and including affective as well as more cognitive influences. A potential role for theta in emotion regulation remains to be elucidated.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"207 ","pages":"Article 112467"},"PeriodicalIF":2.5,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142755821","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}
Pub Date : 2024-11-28DOI: 10.1016/j.ijpsycho.2024.112478
Sultan Tarlacı , Açelya Hıdımoğlu
The aim of our study is to examine the persistence of EEG coherence in the fundamental waves—delta, theta, alpha, and beta—both across spatial domains (within the brain, interhemispheric) and over extended periods (interannual). The long-term stability of a specific EEG wave coherence suggests its potential as a neural fingerprint. A total of 28 participants were included in the intrahemispheric-interannual FFT coherence analysis, comparing EEG data collected years apart. The average interannual interval between the first and second EEG recordings was 7.11 ± 4.56 years, with a range from 1.88 to 19.19 years. The combined data from the two EEG sessions shared 62.7 % of their variance, underscoring significant overlap in their information content. The interannual canonical correlation between the first and second EEGs was 0.792, indicating a strong relationship over time. Overall, alpha coherence, particularly in the frontal lobe, showed marked long-term stability, suggesting it as a strong candidate for an EEG fingerprint. Notably, when comparing fundamental wave coherences in the occipital lobe between the first and second EEGs, only the beta coherence exhibited a remarkable correlation over the years.
{"title":"Quantitative EEG fingerprints: Spatiotemporal stability in interhemispheric and interannual coherence","authors":"Sultan Tarlacı , Açelya Hıdımoğlu","doi":"10.1016/j.ijpsycho.2024.112478","DOIUrl":"10.1016/j.ijpsycho.2024.112478","url":null,"abstract":"<div><div>The aim of our study is to examine the persistence of EEG coherence in the fundamental waves—delta, theta, alpha, and beta—both across spatial domains (within the brain, interhemispheric) and over extended periods (interannual). The long-term stability of a specific EEG wave coherence suggests its potential as a neural fingerprint. A total of 28 participants were included in the intrahemispheric-interannual FFT coherence analysis, comparing EEG data collected years apart. The average interannual interval between the first and second EEG recordings was 7.11 ± 4.56 years, with a range from 1.88 to 19.19 years. The combined data from the two EEG sessions shared 62.7 % of their variance, underscoring significant overlap in their information content. The interannual canonical correlation between the first and second EEGs was 0.792, indicating a strong relationship over time. Overall, alpha coherence, particularly in the frontal lobe, showed marked long-term stability, suggesting it as a strong candidate for an EEG fingerprint. Notably, when comparing fundamental wave coherences in the occipital lobe between the first and second EEGs, only the beta coherence exhibited a remarkable correlation over the years.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"207 ","pages":"Article 112478"},"PeriodicalIF":2.5,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743791","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}
Individuals with obsessive-compulsive disorder (OCD) have difficulty with regulating their emotions and show reduced functioning of inhibitory control. It was reported previously that OCD patients had delayed antisaccade response and increased error rate only when affective pictures with negative valence served as fixation stimuli in “the antisaccade emotional fixation task”. Complementary to the previous research, eye movements and late positive potential (LPP) for fixation stimuli and the presaccadic positivity (PSP) and spike potential (SP) before saccade onset, were compared in two groups of OCD and healthy volunteers. Both groups exhibited increased fixation on emotional images, particularly on unpleasant ones, and showed heightened LPP responses without significant between-group differences. However, individuals with OCD had lower PSP and SP amplitudes for unpleasant images compared to the control group, although there were no differences within conditions for each group. These results suggest that while both groups displayed similar effects of unpleasant images on the involuntary orientation of attention, the findings on presaccadic potentials correlate with behavioral data on increased error rate in antisaccade tasks in OCD. This suggests that emotional dysregulation may contribute to impaired inhibitory control in individuals with OCD.
{"title":"Event-related potentials and presaccadic activity in response to affective stimuli in participants with obsessive-compulsive disorder","authors":"Krystsina Liaukovich , Elizaveta Panfilova , Guzal Khayrullina , Olga Martynova","doi":"10.1016/j.ijpsycho.2024.112475","DOIUrl":"10.1016/j.ijpsycho.2024.112475","url":null,"abstract":"<div><div>Individuals with obsessive-compulsive disorder (OCD) have difficulty with regulating their emotions and show reduced functioning of inhibitory control. It was reported previously that OCD patients had delayed antisaccade response and increased error rate only when affective pictures with negative valence served as fixation stimuli in “the antisaccade emotional fixation task”. Complementary to the previous research, eye movements and late positive potential (LPP) for fixation stimuli and the presaccadic positivity (PSP) and spike potential (SP) before saccade onset, were compared in two groups of OCD and healthy volunteers. Both groups exhibited increased fixation on emotional images, particularly on unpleasant ones, and showed heightened LPP responses without significant between-group differences. However, individuals with OCD had lower PSP and SP amplitudes for unpleasant images compared to the control group, although there were no differences within conditions for each group. These results suggest that while both groups displayed similar effects of unpleasant images on the involuntary orientation of attention, the findings on presaccadic potentials correlate with behavioral data on increased error rate in antisaccade tasks in OCD. This suggests that emotional dysregulation may contribute to impaired inhibitory control in individuals with OCD.</div></div>","PeriodicalId":54945,"journal":{"name":"International Journal of Psychophysiology","volume":"207 ","pages":"Article 112475"},"PeriodicalIF":2.5,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142699081","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}
Pub Date : 2024-11-20DOI: 10.1016/j.ijpsycho.2024.112466
Samet Çelik , Ebru Yıldırım , Bahar Güntekin
Underground mine workers face many risk factors at work sites that are known to affect the neural system. Observational studies report that these risk factors precede neuromuscular and neurodegenerative disorders, especially in old-age miners. Neurodegenerative disorders have electrophysiological, anatomical, and functional changes long before symptoms are seen in older adults. Therefore, this study investigated whether risks faced by miners at young ages were reflected in electrophysiological signals. Twenty-one underground miners and twenty-two above-ground workers matched with them in terms of age, education, and working duration were included in this study. Participants were recorded with a 20-channel EEG during the resting-state (eyes open and closed; EO-EC) and the perception of the International Affective Picture System Paradigm (IAPS). Time-frequency analyses were performed for alpha frequency. Rs-EEG results showed a statistically significant difference in alpha power between the EO and EC states in the control group. However, there was no statistical difference in alpha power between these two conditions in the miners. Additionally, we noted a more pronounced decrease in alpha responses in the posterior region during EC in the miners. The group's main effects were statistically significant in event-related alpha responses during emotional responses. Accordingly, event-related alpha responses of the miner group were lower than the control group in terms of both power spectrum and phase-locking. Underground mine workers are cognitively and emotionally affected by risks in the work environment. Electrophysiological changes seen in young underground workers may be a harbinger of neurodegenerative disorders in miners' old age. Our research findings may lead to the development of occupational neuroscience, social policies, and worker health, which are necessary to improve working conditions for mineworkers.
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