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Morriss J, Biagi N, Wake S. Quantification choices for individual differences: An example of mapping self-report to psychophysiological responses. Int J Psychophysiol 2024; 205:112427. [PMID: 39218250 DOI: 10.1016/j.ijpsycho.2024.112427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 08/01/2024] [Accepted: 08/27/2024] [Indexed: 09/04/2024]
Abstract
A popular focus in affective neuroscience research has been to map the relationships between individual differences (e.g. personality and environmental experiences) and psychophysiological responses, in order to further understand the effect of individual differences upon neurobehavioral systems that support affect and arousal. Despite this trend, there have been a lack of practical examples demonstrating how the quantification of individual differences (e.g. categorical or continuous) impacts the observed relationships between different units of analysis (e.g. self-report > psychophysiological responses). To address this gap, we conducted a two-stage aggregated meta-analysis of self-reported intolerance of uncertainty (IU) and skin conductance responses during threat extinction (k = 18, n = 1006) using different quantification choices for individual differences in self-reported intolerance of uncertainty (continuous, categorical via median split, and categorical via extremes - one standard deviation above/below). Results from the meta-analyses revealed that the different quantification techniques produced some consistent (e.g. higher IU was significantly associated with skin conductance responding during late extinction training) and inconsistent IU-related effects. Furthermore, the number of statistically significant effects and effect sizes varied based on the quantification of individual differences in IU (e.g. categorical, compared to continuous was associated with more statistically significant effects, and larger effect sizes). The current study highlights how conducting different quantification methods for individual differences may help researchers understand the individual difference construct of interest (e.g. characterisation, measurement), as well as examine the stability and reliability of individual difference-based effects and correspondence between various units of analysis.
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Affiliation(s)
- Jayne Morriss
- School of Psychology, Faculty of Environmental and Life Sciences, University of Southampton, UK.
| | - Nicolo Biagi
- Henley Business School, Business Informatics Systems and Accounting, Informatics Research Centre, University of Reading, UK
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2
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Klaassen FH, de Voogd LD, Hulsman AM, O'Reilly JX, Klumpers F, Figner B, Roelofs K. The neurocomputational link between defensive cardiac states and approach-avoidance arbitration under threat. Commun Biol 2024; 7:576. [PMID: 38755409 PMCID: PMC11099143 DOI: 10.1038/s42003-024-06267-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 04/30/2024] [Indexed: 05/18/2024] Open
Abstract
Avoidance, a hallmark of anxiety-related psychopathology, often comes at a cost; avoiding threat may forgo the possibility of a reward. Theories predict that optimal approach-avoidance arbitration depends on threat-induced psychophysiological states, like freezing-related bradycardia. Here we used model-based fMRI analyses to investigate whether and how bradycardia states are linked to the neurocomputational underpinnings of approach-avoidance arbitration under varying reward and threat magnitudes. We show that bradycardia states are associated with increased threat-induced avoidance and more pronounced reward-threat value comparison (i.e., a stronger tendency to approach vs. avoid when expected reward outweighs threat). An amygdala-striatal-prefrontal circuit supports approach-avoidance arbitration under threat, with specific involvement of the amygdala and dorsal anterior cingulate (dACC) in integrating reward-threat value and bradycardia states. These findings highlight the role of human freezing states in value-based decision making, relevant for optimal threat coping. They point to a specific role for amygdala/dACC in state-value integration under threat.
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Affiliation(s)
- Felix H Klaassen
- Radboud University, Donders Institute for Brain, Cognition, and Behaviour, Thomas van Aquinostraat 4, 6525 GD, Nijmegen, The Netherlands.
| | - Lycia D de Voogd
- Radboud University, Donders Institute for Brain, Cognition, and Behaviour, Thomas van Aquinostraat 4, 6525 GD, Nijmegen, The Netherlands
- Radboud University, Behavioural Science Institute (BSI), Thomas van Aquinostraat 4, 6525 GD, Nijmegen, The Netherlands
- Leiden University, Institute of Psychology and Leiden Institute for Brain and Cognition (LIBC), Rapenburg 70, 2311 EZ, Leiden, The Netherlands
| | - Anneloes M Hulsman
- Radboud University, Donders Institute for Brain, Cognition, and Behaviour, Thomas van Aquinostraat 4, 6525 GD, Nijmegen, The Netherlands
- Radboud University, Behavioural Science Institute (BSI), Thomas van Aquinostraat 4, 6525 GD, Nijmegen, The Netherlands
| | - Jill X O'Reilly
- Department of Experimental Psychology, University of Oxford, Woodstock Road, OX2 6GG, Oxford, UK
| | - Floris Klumpers
- Radboud University, Donders Institute for Brain, Cognition, and Behaviour, Thomas van Aquinostraat 4, 6525 GD, Nijmegen, The Netherlands
- Radboud University, Behavioural Science Institute (BSI), Thomas van Aquinostraat 4, 6525 GD, Nijmegen, The Netherlands
| | - Bernd Figner
- Radboud University, Donders Institute for Brain, Cognition, and Behaviour, Thomas van Aquinostraat 4, 6525 GD, Nijmegen, The Netherlands
- Radboud University, Behavioural Science Institute (BSI), Thomas van Aquinostraat 4, 6525 GD, Nijmegen, The Netherlands
| | - Karin Roelofs
- Radboud University, Donders Institute for Brain, Cognition, and Behaviour, Thomas van Aquinostraat 4, 6525 GD, Nijmegen, The Netherlands.
- Radboud University, Behavioural Science Institute (BSI), Thomas van Aquinostraat 4, 6525 GD, Nijmegen, The Netherlands.
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Alting van Geusau VVP, de Jongh A, Nuijs MD, Brouwers TC, Moerbeek M, Matthijssen SJMA. The effectiveness, efficiency, and acceptability of EMDR vs. EMDR 2.0 vs. the Flash technique in the treatment of patients with PTSD: study protocol for the ENHANCE randomized controlled trial. Front Psychiatry 2023; 14:1278052. [PMID: 38025421 PMCID: PMC10665892 DOI: 10.3389/fpsyt.2023.1278052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 09/29/2023] [Indexed: 12/01/2023] Open
Abstract
Background Several widely studied therapies have proven to be effective in the treatment of post-traumatic stress disorder (PTSD). However, there is still room for improvement because not all patients benefit from trauma-focused treatments. Improvements in the treatment of PTSD can be achieved by investigating ways to enhance existing therapies, such as eye movement desensitization and reprocessing (EMDR) therapy, as well as exploring novel treatments. The purpose of the current study is to determine the differential effectiveness, efficiency, and acceptability of EMDR therapy, an adaptation of EMDR therapy, referred to as EMDR 2.0, and a novel intervention for PTSD, the so-called Flash technique. The second aim is to identify the moderators of effectiveness for these interventions. This study will be conducted among individuals diagnosed with PTSD using a randomized controlled trial design. Methods A total of 130 patients diagnosed with (complex) PTSD will be randomly allocated to either six sessions of EMDR therapy, EMDR 2.0, or the Flash technique. The primary outcomes used to determine treatment effectiveness include the presence of a PTSD diagnosis and the severity of PTSD symptoms. The secondary outcomes of effectiveness include symptoms of depression, symptoms of dissociation, general psychiatric symptoms, and experiential avoidance. All patients will be assessed at baseline, at 4-week post-treatment, and at 12-week follow-up. Questionnaires indexing symptoms of PTSD, depression, general psychopathology, and experiential avoidance will also be assessed weekly during treatment and bi-weekly after treatment, until the 12-week follow-up. Efficiency will be assessed by investigating the time it takes both to lose the diagnostic status of PTSD, and to achieve reliable change in PTSD symptoms. Treatment acceptability will be assessed after the first treatment session and after treatment termination. Discussion This study is the first to investigate EMDR 2.0 therapy and the Flash technique in a sample of participants officially diagnosed with PTSD using a randomized controlled trial design. This study is expected to improve the available treatment options for PTSD and provide therapists with alternative ways to choose a therapy beyond its effectiveness by considering moderators, efficiency, and acceptability. Trial registration The trial was retrospectively registered in the ISRCTN registry at 10th November 2022 under registration number ISRCTN13100019.
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Affiliation(s)
- Valentijn V. P. Alting van Geusau
- Altrecht Academic Anxiety Center, Altrecht GGz, Utrecht, Netherlands
- Academic Center for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Amsterdam, Netherlands
| | - Ad de Jongh
- Academic Center for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Amsterdam, Netherlands
- Psychotrauma Expertise Center (PSYTREC), Bilthoven, Netherlands
- School of Health Sciences, University of Salford, Manchester, United Kingdom
- Institute of Health and Society, University of Worcester, Worcester, United Kingdom
- School of Psychology, Queen’s University, Belfast, Ireland
| | - Mae D. Nuijs
- Altrecht Academic Anxiety Center, Altrecht GGz, Utrecht, Netherlands
| | | | - Mirjam Moerbeek
- Department of Methodology and Statistics, Utrecht University, Utrecht, Netherlands
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Ney LJ, FitzSimons-Reilly A, Lipp OV. Reaction time as an outcome measure during online fear conditioning: Effects of number of trials, age, and levels of processing. Behav Res Ther 2023; 169:104406. [PMID: 37738844 DOI: 10.1016/j.brat.2023.104406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 09/04/2023] [Accepted: 09/14/2023] [Indexed: 09/24/2023]
Abstract
Recent studies have shown that fear conditioning experiments can be successfully conducted online. However, there is limited evidence that measures other than subjective ratings of threat expectancy can be collected, which means that online research may not be able to adequately replace laboratory experiments. In the current study, we conducted an online fear conditioning experiment consisting of habituation, acquisition, extinction and 48 h delayed extinction recall using ratings of threat expectancy and conditional stimulus pleasantness, and probe reaction time as outcome measures. The conditional stimuli were categories of words and a levels of processing manipulation explored whether words that were processed at a deeper level during extinction evoked smaller differential threat responses during extinction recall. Although the levels of processing manipulation did not produce a significant outcome, we found that extinction recall was successfully operationalised in our study. Reaction time indicated differential responding during both acquisition and extinction recall, and age of participants was correlated in one of two experiments with differential threat expectancy and reaction time, such that older participants showed better safety learning. The outcomes of this experiment provide multiple novel tools for researchers to explore fear conditioning, especially in an online environment.
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Affiliation(s)
- Luke J Ney
- School of Psychology and Counselling, Queensland University of Technology, Australia.
| | | | - Ottmar V Lipp
- School of Psychology and Counselling, Queensland University of Technology, Australia
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Wadji DL, Martin-Soelch C, Camos V. Can working memory account for EMDR efficacy in PTSD? BMC Psychol 2022; 10:245. [PMID: 36320044 PMCID: PMC9623920 DOI: 10.1186/s40359-022-00951-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 08/10/2022] [Accepted: 10/10/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Although eye movement desensitization and reprocessing (EMDR) has been shown to be effective in the treatment of PTSD for years, it remains controversial due to the lack of understanding of its mechanisms of action. We examined whether the working memory (WM) hypothesis -the competition for limited WM resources induced by the dual task attenuates the vividness and emotionality of the traumatic memory - would provide an explanation for the beneficial effect induced by bilateral stimulation. METHODS We followed the Prisma guidelines and identified 11 articles categorized in two types of designs: studies involving participants with current PTSD symptoms and participants without PTSD diagnosis. RESULTS Regardless of the types of studies, the results showed a reduction of vividness and emotionality in the recall of traumatic stimuli under a dual-task condition compared to a control condition, such as recall alone. However, two studies used a follow-up test to show that this effect does not seem to last long. CONCLUSION Our results provide evidence for the WM hypothesis and suggest that recalling a traumatic memory while performing a secondary task would shift the individual's attention away from the retrieval process and result in a reduction in vividness and emotionality, also associated with the reduction of symptoms.
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Affiliation(s)
- Dany Laure Wadji
- grid.8534.a0000 0004 0478 1713I-Reach Lab, Unit of Clinical and Health Psychology, Department of Psychology, University of Fribourg, Fribourg, Switzerland ,grid.8534.a0000 0004 0478 1713Department of Psychology, University of Fribourg, Rue P.-A.-de Faucigny 2, CH-1700 Fribourg, Switzerland
| | - C. Martin-Soelch
- grid.8534.a0000 0004 0478 1713I-Reach Lab, Unit of Clinical and Health Psychology, Department of Psychology, University of Fribourg, Fribourg, Switzerland
| | - V. Camos
- grid.8534.a0000 0004 0478 1713W-MOVE (Working meMOry deVElopment) lab, Department of Psychology, University of Fribourg, Fribourg, Switzerland CH-1700
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Azimisefat P, de Jongh A, Rajabi S, Kanske P, Jamshidi F. Efficacy of virtual reality exposure therapy and eye movement desensitization and reprocessing therapy on symptoms of acrophobia and anxiety sensitivity in adolescent girls: A randomized controlled trial. Front Psychol 2022; 13:919148. [PMID: 36186313 PMCID: PMC9521642 DOI: 10.3389/fpsyg.2022.919148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 08/09/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundAcrophobia is a specific phobia characterized by a severe fear of heights. The purpose of the present study was to investigate the efficacy of two therapies that may ameliorate symptoms of acrophobia and anxiety sensitivity, i.e., virtual reality exposure therapy (VRET) and eye movement desensitization and reprocessing (EMDR) therapy with a Waiting List Control Condition (WLCC).MethodsWe applied a three-armed randomized controlled pre-post-test design with 45 female adolescent students. Students who met DSM-5 criteria for acrophobia were randomly assigned to either VRET (N = 15; Mage = 17.26; SD = 1.32), EMDR (N = 15; Mage = 17.15; SD = 1.57), or a WLCC (N = 15; Mage = 17.50; SD = 1.26). The study groups were evaluated one week before the intervention and one week after the last intervention session regarding symptoms of acrophobia (Severity Measure for Acrophobia) and anxiety sensitivity (Anxiety Sensitivity Index).ResultsThe data showed that both the application of VRET and EMDR therapy were associated with significantly reduced symptoms of acrophobia (d = 1.03 for VRET and d = 1.08 for EMDR) and anxiety sensitivity (d = 1.15 for VRET and d = 1.13 for EMDR) in comparison to the Waiting List.LimitationsThe sample consisted only of adolescent women. Due to the recognizable differences between the two interventions, the therapists and the participants were not blind to the conditions.ConclusionThe results suggest that both VRET and EMDR are interventions that can significantly improve symptoms of acrophobia and anxiety sensitivity in female adolescents.Clinical Trial Registrationhttps://www.irct.ir/trial/57391, identifier: IRCT20210213050343N1.
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Affiliation(s)
| | - Ad de Jongh
- Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, Netherlands
| | - Soran Rajabi
- Department of Psychology, Persian Gulf University, Bushehr, Iran
- *Correspondence: Soran Rajabi,
| | - Philipp Kanske
- Clinical Psychology and Behavioural Neuroscience, Faculty of Psychology, Technische Universität Dresden, Dresden, Germany
| | - Fatemeh Jamshidi
- Department of Psychology, Persian Gulf University, Bushehr, Iran
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Picco S, Bavassi L, Fernández RS, Pedreira ME. Highly Demand Working Memory Intervention Weakens a Reactivated Threat Memory and the Associated Cognitive Biases. Neuroscience 2022; 497:257-270. [PMID: 35803491 DOI: 10.1016/j.neuroscience.2022.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 06/28/2022] [Accepted: 07/01/2022] [Indexed: 11/24/2022]
Abstract
Anxiety disorders are the most frequent type of mental disorder. Threat-conditioning memory plays a central role in anxiety disorders, impacting complex cognitive systems by modifying behavioral responses to fearful stimuli and inducing an overestimation of potential threats. Here, we analyzed the reminder-dependent amnesia on physiological responses, unconditioned stimulus (US) expectancy ratings, and measures of cognitive bias towards the threat of a threat-conditioning memory. Subjects received differential threat-conditioning. Twenty-four hours later, after reactivation of the memory of threat-conditioning, one group performed a high demand working memory task (HWM) and a second group a low demand working memory task (LWM). A third group only performed the HWM task. Retention of conditioned threat memory was tested on Day 3 in an extinction session followed by a reinstatement test. Tasks targeting stimulus representation, valuation, and attentional bias towards threat were performed. We show that the reminder-dependent intervention with an HWM weakened memory retention as expressed in skin conductance response (SCR) and faded the representation and valuation towards the threat, but it did not affect US expectancy or attentional bias. Our findings provide evidence for the experimental psychopathology approach opening the possibility to weaken both Threat conditioning memory and the systems associated with the maintenance of anxiety features.
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Affiliation(s)
- Soledad Picco
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIByNE)-CONICET, Argentina; Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
| | - Luz Bavassi
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIByNE)-CONICET, Argentina; Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina; Departamento de Física, Universidad de Buenos Aires, Argentina
| | - Rodrigo S Fernández
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIByNE)-CONICET, Argentina; Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
| | - María E Pedreira
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIByNE)-CONICET, Argentina; Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina.
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8
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Kredlow MA, de Voogd LD, Phelps EA. A Case for Translation From the Clinic to the Laboratory. PERSPECTIVES ON PSYCHOLOGICAL SCIENCE 2022; 17:1120-1149. [PMID: 35245166 PMCID: PMC9271534 DOI: 10.1177/17456916211039852] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Laboratory procedures have been used for decades as analogues for clinical processes with the goal of improving our understanding of psychological treatments for emotional disorders and identifying strategies to make treatments more effective. This research has often focused on translation from the laboratory to the clinic. Although this approach has notable successes, it has not been seamless. There are many examples of strategies that work in the laboratory that fail to lead to improved outcomes when applied clinically. One possible reason for this gap between experimental and clinical research is a failure to focus on translation from the clinic to the laboratory. Here, we discuss potential benefits of translation from the clinic to the laboratory and provide examples of how this might be implemented. We first consider two well-established laboratory analogues (extinction and cognitive reappraisal), identify critical aspects of the related clinical procedures (exposure and cognitive restructuring) that are missing from these analogues, and propose variations to better capture the clinical process. Second, we discuss two clinical procedures that have more recently been brought into the laboratory (eye-movement desensitization and reprocessing and imagery rescripting). We conclude by highlighting potential implications of this proposed shift in focus for translational research.
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Affiliation(s)
- M Alexandra Kredlow
- Department of Psychology, Tufts University
- Department of Psychology, Harvard University
| | - Lycia D de Voogd
- Donders Institute for Brain, Cognition, and Behavior, Radboud University and Radboud University Medical Center
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9
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Cheng Y, Jackson TB, MacNamara A. Modulation of threat extinction by working memory load: An event-related potential study. Behav Res Ther 2022; 150:104031. [PMID: 35032699 PMCID: PMC8844280 DOI: 10.1016/j.brat.2022.104031] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 11/26/2021] [Accepted: 01/05/2022] [Indexed: 11/30/2022]
Abstract
Distraction is typically discouraged during exposure therapy for anxiety, because it is thought to interfere with extinction learning by diverting attention away from anxiety-provoking stimuli. Working memory load is one form of distraction that might interfere with extinction learning. Alternatively, working memory load might reduce threat responding and benefit extinction learning by engaging prefrontal brain regions that have a reciprocal relationship with brain circuits involved in threat detection and processing. Prior work examining the effect of working memory load on threat extinction has been limited and has found mixed results. Here, we used the late positive potential (LPP), an event-related potential that is larger for threatening compared to non-threatening stimuli to assess the effect of working memory load on threat extinction. After acquisition, 38 participants performed three blocks of an extinction task interspersed with low and high working memory load trials. Results showed that overall, the LPP was reduced under high compared to low working memory load, and that working memory load slowed extinction learning. Results provide empirical evidence in support of limiting distraction during exposure therapy in order to optimize extinction learning efficiency.
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Affiliation(s)
| | | | - Annmarie MacNamara
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, TX, USA.
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10
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Ward RT, Lotfi S, Stout DM, Mattson S, Lee HJ, Larson CL. Working Memory Performance for Differentially Conditioned Stimuli. Front Psychol 2022; 12:811233. [PMID: 35145464 PMCID: PMC8821888 DOI: 10.3389/fpsyg.2021.811233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 12/29/2021] [Indexed: 01/29/2023] Open
Abstract
Previous work suggests that threat-related stimuli are stored to a greater degree in working memory compared to neutral stimuli. However, most of this research has focused on stimuli with physically salient threat attributes (e.g., angry faces), failing to account for how a "neutral" stimulus that has acquired threat-related associations through differential aversive conditioning influences working memory. The current study examined how differentially conditioned safe (i.e., CS-) and threat (i.e., CS+) stimuli are stored in working memory relative to a novel, non-associated (i.e., N) stimuli. Participants (n = 69) completed a differential fear conditioning task followed by a change detection task consisting of three conditions (CS+, CS-, N) across two loads (small, large). Results revealed individuals successfully learned to distinguishing CS+ from CS- conditions during the differential aversive conditioning task. Our working memory outcomes indicated successful load manipulation effects, but no statistically significant differences in accuracy, response time (RT), or Pashler's K measures of working memory capacity between CS+, CS-, or N conditions. However, we observed significantly reduced RT difference scores for the CS+ compared to CS- condition, indicating greater RT differences between the CS+ and N condition vs. the CS- and N condition. These findings suggest that differentially conditioned stimuli have little impact on behavioral outcomes of working memory compared to novel stimuli that had not been associated with previous safe of aversive outcomes, at least in healthy populations.
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Affiliation(s)
- Richard T. Ward
- Center for the Study of Emotion and Attention, University of Florida, Gainesville, FL, United States,Department of Psychology, University of Florida, Gainesville, FL, United States,*Correspondence: Richard T. Ward,
| | - Salahadin Lotfi
- Department of Psychology, University of Wisconsin—Milwaukee, Milwaukee, WI, United States
| | - Daniel M. Stout
- Center of Excellence for Stress and Mental Health, VA San Diego Healthcare System, San Diego, CA, United States,Department of Psychiatry, University of California, San Diego, San Diego, CA, United States
| | - Sofia Mattson
- Department of Psychology, University of Wisconsin—Milwaukee, Milwaukee, WI, United States
| | - Han-Joo Lee
- Department of Psychology, University of Wisconsin—Milwaukee, Milwaukee, WI, United States
| | - Christine L. Larson
- Department of Psychology, University of Wisconsin—Milwaukee, Milwaukee, WI, United States
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Zuccolo PF, Hunziker MHL. Can contingency rehearsal during the interval between a retrieval cue and extinction training change the effects of post-retrieval extinction? Psychophysiology 2021; 59:e13971. [PMID: 34792802 DOI: 10.1111/psyp.13971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 08/23/2021] [Accepted: 11/03/2021] [Indexed: 11/29/2022]
Abstract
Return of fear may be prevented by post-retrieval extinction (PRE), a procedure consisting of presenting a stimulus that was present during conditioning (retrieval cue) prior to extinction training. However, recent evidence suggests that there might be circumstances under which PRE is not effective to prevent the return of fear (boundary conditions), but some of these conditions remain unknown. We explored if rehearsing the CS, US or CS-US contingency during the interval between the retrieval cue and extinction training might change the effects of PRE. One day after differential fear conditioning, healthy human participants (n = 83) underwent either standard extinction (control condition, n = 31) or two different PRE procedures, one in which participants rehearsed the CS-US contingency during the interval between the retrieval cue and extinction (rehearsal condition, n = 25), or another in which they underwent a verbal fluency task directing their attention away from the experimental contingencies during this interval (nonrehearsal condition, n = 27). Return of fear in a reinstatement test was observed in both control and rehearsal conditions, whereas in the nonrehearsal condition there was a generalized increase in response to the CS+ and CS-. Differential response in the rehearsal condition had values slightly smaller than the control group with no significant differences from both control and nonrehearsal conditions. These results suggest that the overt behavior of participants during the interval between a retrieval cue and extinction training might change the effects of PRE in healthy human participants, but further manipulations of these variables are needed to confirm these findings.
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Affiliation(s)
- Pedro Fonseca Zuccolo
- Institute of Psychology, Department of Experimental Psychology, University of São Paulo, São Paulo, Brazil
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12
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Goldfarb EV, Blow T, Dunsmoor JE, Phelps EA. Elemental and configural threat learning bias extinction generalization. Neurobiol Learn Mem 2021; 180:107405. [PMID: 33609739 PMCID: PMC8076085 DOI: 10.1016/j.nlm.2021.107405] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 02/08/2021] [Accepted: 02/11/2021] [Indexed: 11/26/2022]
Abstract
Emotional experiences often contain a multitude of details that may be represented in memory as individual elements or integrated into a single representation. How details associated with a negative emotional event are represented in memory can have important implications for extinction strategies designed to reduce emotional responses. For example, is extinguishing one cue associated with an aversive outcome sufficient to reduce learned behavior to other cues present at the time of learning that were not directly extinguished? Here, we used a between-subjects multi-day threat conditioning and extinction task to assess whether participants generalize extinction from one cue to unextinguished cues. On Day 1, one group of participants learned that a compound conditioned stimulus, composed of a tone and colored square, predicted an uncomfortable shock to the wrist (Compound group). A second group learned that the tone and square separately predicted shock (Separate group). On Day 2, participants in both groups were exposed to the tone in the absence of shocks (cue extinction). On Day 3, we tested whether extinction generalized from the extinguished to the unextinguished cue, as well as to a compound composed of both cues. Results showed that configural and elemental learning had unique and opposite effects on extinction generalization. Subjects who initially learned that a compound cue predicted shock successfully generalized extinction learning from the tone to the square, but exhibited threat relapse to the compound cue. In contrast, subjects who initially learned that each cue individually predicted shock did not generalize extinction learning from the tone to the square, but threat responses to the compound were low. These results highlight the importance of whether details of an aversive event are represented as integrated or separated memories, as these representations affect the success or limits of extinction generalization.
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Affiliation(s)
| | - Tahj Blow
- Weill Cornell College of Medicine, New York, NY, USA
| | - Joseph E Dunsmoor
- Department of Psychiatry, University of Texas at Austin, Austin, TX, USA
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