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Sun W, Mei L, Zhang A, Lai S, Qu X. Computed tomography myocardial perfusion imaging to detect myocardial ischemia in patients with anxiety and obstructive coronary heart disease post-exposure to mental stressors. Sci Rep 2024; 14:10685. [PMID: 38724607 PMCID: PMC11082233 DOI: 10.1038/s41598-024-61568-4] [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: 12/25/2023] [Accepted: 05/07/2024] [Indexed: 05/12/2024] Open
Abstract
This study aims to measure myocardial blood flow (MBF) using dynamic CT- myocardial perfusion imaging (CT-MPI) combined with mental stressors in patients with obstructive coronary artery disease (OCAD) and in patients with anxiety and no obstructive coronary artery disease (ANOCAD). A total of 30 patients with OCAD with 30 patients with ANOCAD were included in this analysis. Using the 17-segment model, the rest and stress phase MBF of major coronary arteries in participants were recorded respectively. Compared with ANOCAD patients, OCAD patients were more likely to have localized reduction of MBF (p < 0.05). For patients with ANOCAD, both global MBF and MBF of the main coronary arteries in the stress phase were lower than those in the rest phase (all p < 0.05), but there was no significant difference in MBF among the main coronary arteries in the rest or stress phase (p = 0.25, p = 0.15). For patients with OCAD, the MBF of the target area was lower than that of the non-target area in both the rest and stress phase, and the MBF of the target area in the stress phase was lower than that in the rest phase (all p < 0.05). However, there was no significant difference in MBF between the rest or stress phase in the non-target area (p = 0.73). Under mental stress, the decrease in MBF in ANOCAD patients was diffuse, while the decrease in MBF in OCAD patients was localized. Dynamic CT-MPI combined with mental stressors can be used to detect MBF changes in anxiety patients.
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Affiliation(s)
- Weihang Sun
- Department of Radiology, The Second Hospital of Dalian Medical University, No.467 Zhongshan Road, Shahekou District, Dalian City, Liaoning Province, China
| | - Lingjun Mei
- Department of Radiology, The Second Hospital of Dalian Medical University, No.467 Zhongshan Road, Shahekou District, Dalian City, Liaoning Province, China
| | - Aodan Zhang
- Department of Radiology, The Second Hospital of Dalian Medical University (Diamond Bay), Dalian City, Liaoning Province, China, No. 216 Shanzhong Road, Ganjingzi District
| | - Shengyuan Lai
- Department of Radiology, The Second Hospital of Dalian Medical University, No.467 Zhongshan Road, Shahekou District, Dalian City, Liaoning Province, China.
| | - Xiaofeng Qu
- Department of Radiology, The Second Hospital of Dalian Medical University, No.467 Zhongshan Road, Shahekou District, Dalian City, Liaoning Province, China.
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Noda T, Aschauer DF, Chambers AR, Seiler JPH, Rumpel S. Representational maps in the brain: concepts, approaches, and applications. Front Cell Neurosci 2024; 18:1366200. [PMID: 38584779 PMCID: PMC10995314 DOI: 10.3389/fncel.2024.1366200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 03/08/2024] [Indexed: 04/09/2024] Open
Abstract
Neural systems have evolved to process sensory stimuli in a way that allows for efficient and adaptive behavior in a complex environment. Recent technological advances enable us to investigate sensory processing in animal models by simultaneously recording the activity of large populations of neurons with single-cell resolution, yielding high-dimensional datasets. In this review, we discuss concepts and approaches for assessing the population-level representation of sensory stimuli in the form of a representational map. In such a map, not only are the identities of stimuli distinctly represented, but their relational similarity is also mapped onto the space of neuronal activity. We highlight example studies in which the structure of representational maps in the brain are estimated from recordings in humans as well as animals and compare their methodological approaches. Finally, we integrate these aspects and provide an outlook for how the concept of representational maps could be applied to various fields in basic and clinical neuroscience.
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Affiliation(s)
- Takahiro Noda
- Institute of Physiology, Focus Program Translational Neurosciences, University Medical Center, Johannes Gutenberg University-Mainz, Mainz, Germany
| | - Dominik F. Aschauer
- Institute of Physiology, Focus Program Translational Neurosciences, University Medical Center, Johannes Gutenberg University-Mainz, Mainz, Germany
| | - Anna R. Chambers
- Department of Otolaryngology – Head and Neck Surgery, Harvard Medical School, Boston, MA, United States
- Eaton Peabody Laboratories, Massachusetts Eye and Ear Infirmary, Boston, MA, United States
| | - Johannes P.-H. Seiler
- Institute of Physiology, Focus Program Translational Neurosciences, University Medical Center, Johannes Gutenberg University-Mainz, Mainz, Germany
| | - Simon Rumpel
- Institute of Physiology, Focus Program Translational Neurosciences, University Medical Center, Johannes Gutenberg University-Mainz, Mainz, Germany
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Yang G, Wu H, Li Q, Liu X, Fu Z, Jiang J. Dorsolateral prefrontal activity supports a cognitive space organization of cognitive control. eLife 2024; 12:RP87126. [PMID: 38446535 PMCID: PMC10942645 DOI: 10.7554/elife.87126] [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] [Indexed: 03/07/2024] Open
Abstract
Cognitive control resolves conflicts between task-relevant and -irrelevant information to enable goal-directed behavior. As conflicts can arise from different sources (e.g., sensory input, internal representations), how a limited set of cognitive control processes can effectively address diverse conflicts remains a major challenge. Based on the cognitive space theory, different conflicts can be parameterized and represented as distinct points in a (low-dimensional) cognitive space, which can then be resolved by a limited set of cognitive control processes working along the dimensions. It leads to a hypothesis that conflicts similar in their sources are also represented similarly in the cognitive space. We designed a task with five types of conflicts that could be conceptually parameterized. Both human performance and fMRI activity patterns in the right dorsolateral prefrontal cortex support that different types of conflicts are organized based on their similarity, thus suggesting cognitive space as a principle for representing conflicts.
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Affiliation(s)
- Guochun Yang
- CAS Key Laboratory of Behavioral Science, Institute of PsychologyBeijingChina
- Department of Psychology, University of Chinese Academy of SciencesBeijingChina
- Department of Psychological and Brain Sciences, University of IowaIowa CityUnited States
- Cognitive Control Collaborative, University of IowaIowa CityUnited States
| | - Haiyan Wu
- Centre for Cognitive and Brain Sciences and Department of Psychology, University of MacauMacauChina
| | - Qi Li
- Beijing Key Laboratory of Learning and Cognition, School of Psychology, Capital Normal UniversityBeijingChina
| | - Xun Liu
- CAS Key Laboratory of Behavioral Science, Institute of PsychologyBeijingChina
- Department of Psychology, University of Chinese Academy of SciencesBeijingChina
| | - Zhongzheng Fu
- Department of Neurological Surgery, Unversity of Texas Southwestern Medical CenterDallasUnited States
| | - Jiefeng Jiang
- Department of Psychological and Brain Sciences, University of IowaIowa CityUnited States
- Cognitive Control Collaborative, University of IowaIowa CityUnited States
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Viviani G, Visalli A, Finos L, Vallesi A, Ambrosini E. A comparison between different variants of the spatial Stroop task: The influence of analytic flexibility on Stroop effect estimates and reliability. Behav Res Methods 2024; 56:934-951. [PMID: 36894759 PMCID: PMC10830653 DOI: 10.3758/s13428-023-02091-8] [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] [Accepted: 02/10/2023] [Indexed: 03/11/2023]
Abstract
The spatial Stroop task measures the ability to resolve interference between relevant and irrelevant spatial information. We recently proposed a four-choice spatial Stroop task that ensures methodological advantages over the original color-word verbal Stroop task, requiring participants to indicate the direction of an arrow while ignoring its position in one of the screen corners. However, its peripheral spatial arrangement might represent a methodological weakness and could introduce experimental confounds. Thus, aiming at improving our "Peripheral" spatial Stroop, we designed and made available five novel spatial Stroop tasks (Perifoveal, Navon, Figure-Ground, Flanker, and Saliency), wherein the stimuli appeared at the center of the screen. In a within-subjects online study, we compared the six versions to identify which task produced the largest but also the most reliable and robust Stroop effect. Indeed, although internal reliability is frequently overlooked, its estimate is fundamental, also in light of the recently proposed reliability paradox. Data analyses were performed using both the classical general linear model analytical approach and two multilevel modelling approaches (linear mixed models and random coefficient analysis), which specifically served for more accurately estimating the Stroop effect by explaining intra-subject, trial-by-trial variability. We then assessed our results based on their robustness to such analytic flexibility. Overall, our results indicate that the Perifoveal spatial Stroop is the best alternative task for its statistical properties and methodological advantages. Interestingly, our results also indicate that the Peripheral and Perifoveal Stroop effects were not only the largest, but also those with highest and most robust internal reliability.
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Affiliation(s)
- Giada Viviani
- Department of Neuroscience, University of Padova, 35121, Padova, Italy
- Padova Neuroscience Center, University of Padova, Padova, Italy
| | - Antonino Visalli
- Department of Neuroscience, University of Padova, 35121, Padova, Italy
| | - Livio Finos
- Padova Neuroscience Center, University of Padova, Padova, Italy
- Department of Developmental Psychology and Socialization, University of Padova, Padova, Italy
| | - Antonino Vallesi
- Department of Neuroscience, University of Padova, 35121, Padova, Italy
- Department of Developmental Psychology and Socialization, University of Padova, Padova, Italy
| | - Ettore Ambrosini
- Department of Neuroscience, University of Padova, 35121, Padova, Italy.
- Department of Developmental Psychology and Socialization, University of Padova, Padova, Italy.
- Department of General Psychology, University of Padova, Padova, Italy.
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Sun W, Zhang A, Mei L, Liu X, Li Z, Qu X. Dynamic myocardial perfusion computed tomography with mental stress test to detect changes in myocardial microcirculation in patients with anxiety and no obstructive coronary artery disease. Eur Radiol 2023; 33:6522-6533. [PMID: 37036482 DOI: 10.1007/s00330-023-09607-y] [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: 10/08/2022] [Revised: 01/27/2023] [Accepted: 02/22/2023] [Indexed: 04/11/2023]
Abstract
OBJECTIVE Mental stress can induce myocardial ischemia in patients with anxiety and other psychological disorders. Computed tomography myocardial perfusion imaging (CT-MPI) has the potential to quantitatively diagnose myocardial ischemia. The aim of this study was to measure changes in myocardial microcirculation perfusion (MMP) in patients with anxiety who have angina symptoms/ischemia but no obstructive coronary artery disease (INOCA) using dynamic CT-MPI in combination with a mental stress test. METHODS Patients with INOCA were divided into five subgroups (none, minimal, mild, moderate, and severe) according to the generalized anxiety disorder scale. Patients underwent dynamic CT-MPI with mental stress testing using a series of the standardized color word/arithmetic stressors. Myocardial blood flow (MBF) during resting and stress phases of CT-MPI was recorded. RESULTS Fifty-eight patients with 986 segments were included for final analysis. Compared to patients with none, minimal, mild, and moderate anxiety, those with severe anxiety had the largest rate of MBF decrease and the largest MBF decrease value. At the same time, those with no anxiety had the largest rate of MBF increase, the largest MBF increase value (all p < 0.05). As anxiety intensified, the rate of MBF increased and the MBF value increased (r = -0.24, r = -0.27, p < 0.05). Concomitantly, the rate of MBF decreased and the MBF value decreased (r = 0.63, r = 0.43, p < 0.05). CONCLUSIONS Dynamic CT-MPI with a mental stress test can be used to evaluate MMP in patients with anxiety and INOCA. Mental stress resulted in significant differences in changes in the rate and value of MBF among patients with different anxiety degrees. KEY POINTS • Dynamic CT-MPI with mental stress test worked well to quantitatively evaluate myocardial microcirculation perfusion in patients with anxiety and INOCA. • The rates of MBF decrease and MBF decrease value were positively correlated with anxiety degree of anxiety patients with INOCA. • MBF change derived from CT-MPI with mental stress test had a good performance to predicting anxiety degree of patients with anxiety and INOCA.
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Affiliation(s)
- Weihang Sun
- Department of Radiology, The Second Hospital of Dalian Medical University, No.467 Zhongshan Road, Shahekou District, Dalian City, Liaoning Province, China
| | - Aodan Zhang
- Department of Radiology, The Second Hospital of Dalian Medical University (Diamond Bay), Dalian City, Liaoning Province, China
| | - Lingjun Mei
- Department of Radiology, The Second Hospital of Dalian Medical University, No.467 Zhongshan Road, Shahekou District, Dalian City, Liaoning Province, China
| | - Xiangting Liu
- Department of Cardiology, The Second Hospital of Dalian Medical University, No.467 Zhongshan Road, Shahekou District, Dalian City, Liaoning Province, China
| | - Zhongyan Li
- Department of Cardiology, The Second Hospital of Dalian Medical University, No.467 Zhongshan Road, Shahekou District, Dalian City, Liaoning Province, China.
| | - Xiaofeng Qu
- Department of Radiology, The Second Hospital of Dalian Medical University, No.467 Zhongshan Road, Shahekou District, Dalian City, Liaoning Province, China.
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Xu P, Wang M, Zhang T, Zhang J, Jin Z, Li L. The role of middle frontal gyrus in working memory retrieval by the effect of target detection tasks: a simultaneous EEG-fMRI study. Brain Struct Funct 2023:10.1007/s00429-023-02687-y. [PMID: 37477712 DOI: 10.1007/s00429-023-02687-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 07/11/2023] [Indexed: 07/22/2023]
Abstract
Maintained working memory (WM) representations have been shown to influence visual target detection selection, while the effect of the visual target detection process on WM retrieval remains largely unknown. In the current research, we used the dual-paradigm of the visual target detection task and the delayed matching task (DMT), which contained the following four conditions: the match condition: the DMT target contained the detection target; the mismatch condition: the DMT target contained the detection distractor; the neutral condition: only the detection target was presented; the catch condition: only the DMT target was presented. Twenty-six subjects were recruited in the experiment with simultaneous EEG-fMRI data. Behaviorally, faster responses were found in the mismatch condition than in the match and neutral conditions. The EEG data found a greater parieto-occipital N1 component in the mismatch condition compared to the neutral condition, and a greater frontal N2 component in the match condition than in the mismatch condition. Moreover, compared to the match and neutral conditions, weaker activations of the bilateral middle frontal gyrus (MFG) were observed in the mismatch condition. And the representational similarity analysis (RSA) revealed significant differences in the representational patterns of the bilateral MFG between mismatch and match conditions, as well as in the representational patterns of the left MFG between mismatch and neutral conditions. Additionally, the left MFG may be the brain source of the N1 component in the mismatch condition. These findings suggest that the mismatch between the DMT target and detection target affects early attention allocation and attentional control in WM retrieval, and the MFG may play an important role in WM retrieval by the effect of the target detection task. In conclusion, our work deepens the understanding of the neural mechanisms by which visual target detection affects WM retrieval.
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Affiliation(s)
- Ping Xu
- MOE Key Laboratory for Neuroinformation, High-Field Magnetic Resonance Brain Imaging Key Laboratory of Sichuan Province, Center for Psychiatry and Psychology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, China
| | - Min Wang
- Bioinformatics and BioMedical Bigdata Mining Laboratory, School of Big Health, Guizhou Medical University, Guiyang, China
| | - Tingting Zhang
- MOE Key Laboratory for Neuroinformation, High-Field Magnetic Resonance Brain Imaging Key Laboratory of Sichuan Province, Center for Psychiatry and Psychology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, China
| | - Junjun Zhang
- MOE Key Laboratory for Neuroinformation, High-Field Magnetic Resonance Brain Imaging Key Laboratory of Sichuan Province, Center for Psychiatry and Psychology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, China
| | - Zhenlan Jin
- MOE Key Laboratory for Neuroinformation, High-Field Magnetic Resonance Brain Imaging Key Laboratory of Sichuan Province, Center for Psychiatry and Psychology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, China
| | - Ling Li
- MOE Key Laboratory for Neuroinformation, High-Field Magnetic Resonance Brain Imaging Key Laboratory of Sichuan Province, Center for Psychiatry and Psychology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, China.
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Labek K, Sittenberger E, Kienhöfer V, Rabl L, Messina I, Schurz M, Stingl JC, Viviani R. The gradient model of brain organization in decisions involving “empathy for pain”. Cereb Cortex 2022; 33:5839-5850. [PMID: 36537039 DOI: 10.1093/cercor/bhac464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 09/20/2022] [Accepted: 09/26/2022] [Indexed: 12/24/2022] Open
Abstract
Abstract
Influential models of cortical organization propose a close relationship between heteromodal association areas and highly connected hubs in the default mode network. The “gradient model” of cortical organization proposes a close relationship between these areas and highly connected hubs in the default mode network, a set of cortical areas deactivated by demanding tasks. Here, we used a decision-making task and representational similarity analysis with classic “empathy for pain” stimuli to probe the relationship between high-level representations of imminent pain in others and these areas. High-level representations were colocalized with task deactivations or the transitions from activations to deactivations. These loci belonged to 2 groups: those that loaded on the high end of the principal cortical gradient and were associated by meta-analytic decoding with the default mode network, and those that appeared to accompany functional repurposing of somatosensory cortex in the presence of visual stimuli. These findings suggest that task deactivations may set out cortical areas that host high-level representations. We anticipate that an increased understanding of the cortical correlates of high-level representations may improve neurobiological models of social interactions and psychopathology.
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Affiliation(s)
- Karin Labek
- University of Innsbruck Institute of Psychology, , Universitätsstraße 5-7, 6020 Innsbruck , Austria
| | - Elisa Sittenberger
- University of Ulm Psychiatry and Psychotherapy Clinic III, , Leimgrubenweg 12, 89075 Ulm , Germany
| | - Valerie Kienhöfer
- University of Innsbruck Institute of Psychology, , Universitätsstraße 5-7, 6020 Innsbruck , Austria
- University of Ulm Psychiatry and Psychotherapy Clinic III, , Leimgrubenweg 12, 89075 Ulm , Germany
| | - Luna Rabl
- University of Innsbruck Institute of Psychology, , Universitätsstraße 5-7, 6020 Innsbruck , Austria
- University of Ulm Psychiatry and Psychotherapy Clinic III, , Leimgrubenweg 12, 89075 Ulm , Germany
| | - Irene Messina
- University of Ulm Psychiatry and Psychotherapy Clinic III, , Leimgrubenweg 12, 89075 Ulm , Germany
- Scienze e Tecniche Psicologiche,Universitas Mercatorum , Piazza Mattei 10, 00186 Rome , Italy
| | - Matthias Schurz
- University of Innsbruck Institute of Psychology, , Universitätsstraße 5-7, 6020 Innsbruck , Austria
- University of Innsbruck Digital Science Center (DiSC), , Innrain 15, 6020 Innsbruck , Austria
| | - Julia C Stingl
- University Clinic Aachen Clinical Pharmacology, , Wendlingweg 2, 52074 Aachen , Germany
| | - Roberto Viviani
- University of Innsbruck Institute of Psychology, , Universitätsstraße 5-7, 6020 Innsbruck , Austria
- University of Ulm Psychiatry and Psychotherapy Clinic III, , Leimgrubenweg 12, 89075 Ulm , Germany
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Kikumoto A, Mayr U, Badre D. The role of conjunctive representations in prioritizing and selecting planned actions. eLife 2022; 11:e80153. [PMID: 36314769 PMCID: PMC9651952 DOI: 10.7554/elife.80153] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 10/30/2022] [Indexed: 12/05/2022] Open
Abstract
For flexible goal-directed behavior, prioritizing and selecting a specific action among multiple candidates are often important. Working memory has long been assumed to play a role in prioritization and planning, while bridging cross-temporal contingencies during action selection. However, studies of working memory have mostly focused on memory for single components of an action plan, such as a rule or a stimulus, rather than management of all of these elements during planning. Therefore, it is not known how post-encoding prioritization and selection operate on the entire profile of representations for prospective actions. Here, we assessed how such control processes unfold over action representations, highlighting the role of conjunctive representations that nonlinearly integrate task-relevant features during maintenance and prioritization of action plans. For each trial, participants prepared two independent rule-based actions simultaneously, then they were retro-cued to select one as their response. Prior to the start of the trial, one rule-based action was randomly assigned to be high priority by cueing that it was more likely to be tested. We found that both full action plans were maintained as conjunctive representations during action preparation, regardless of priority. However, during output selection, the conjunctive representation of the high-priority action plan was more enhanced and readily selected as an output. Furthermore, the strength of the high-priority conjunctive representation was associated with behavioral interference when the low-priority action was tested. Thus, multiple alternate upcoming actions were maintained as integrated representations and served as the target of post-encoding attentional selection mechanisms to prioritize and select an action from within working memory.
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Affiliation(s)
- Atsushi Kikumoto
- Department of Cognitive, Linguistic, and Psychological Sciences, Brown UniversityProvidenceUnited States
- RIKEN Center for Brain ScienceWakoJapan
| | - Ulrich Mayr
- Department of Psychology, University of OregonEugeneUnited States
| | - David Badre
- Department of Cognitive, Linguistic, and Psychological Sciences, Brown UniversityProvidenceUnited States
- Carney Institute for Brain Science, Brown UniversityProvidenceUnited States
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Braver TS, Kizhner A, Tang R, Freund MC, Etzel JA. The Dual Mechanisms of Cognitive Control Project. J Cogn Neurosci 2021:1-26. [PMID: 34407191 PMCID: PMC10069323 DOI: 10.1162/jocn_a_01768] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
We describe an ambitious ongoing study that has been strongly influenced and inspired by Don Stuss's career-long efforts to identify key cognitive processes that characterize executive control, investigate potential unifying dimensions that define prefrontal function, and carefully attend to individual differences. The Dual Mechanisms of Cognitive Control project tests a theoretical framework positing two key control dimensions: proactive and reactive. The framework's central tenets are that proactive and reactive control modes reflect domain-general dimensions of individual variation, with distinctive neural signatures, involving the lateral pFC as a central node within associated brain networks (e.g., fronto-parietal, cingulo-opercular). In the Dual Mechanisms of Cognitive Control project, each participant is scanned while performing theoretically targeted variants of multiple well-established cognitive control tasks (Stroop, cued task-switching, AX-CPT, Sternberg working memory) in three separate imaging sessions, that each encourages utilization of different control modes plus also completes an extensive out-of-scanner individual differences battery. Additional key features of the project include a high spatio-temporal resolution (multiband) acquisition protocol and a sample that includes a substantial subset of monozygotic twin pairs and participants recruited from the Human Connectome Project. Although data collection is still continuing (target n = 200), we provide an overview of the study design and protocol, along with initial results (n = 80) revealing evidence of a domain-general neural signature of cognitive control and its modulation under reactive conditions. Aligned with Don Stuss's legacy of scientific community building, a partial data set has been publicly released, with the full data set released at project completion, so it can serve as a valuable resource.
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Freund MC, Etzel JA, Braver TS. Neural Coding of Cognitive Control: The Representational Similarity Analysis Approach. Trends Cogn Sci 2021; 25:622-638. [PMID: 33895065 PMCID: PMC8279005 DOI: 10.1016/j.tics.2021.03.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 01/07/2023]
Abstract
Cognitive control relies on distributed and potentially high-dimensional frontoparietal task representations. Yet, the classical cognitive neuroscience approach in this domain has focused on aggregating and contrasting neural measures - either via univariate or multivariate methods - along highly abstracted, 1D factors (e.g., Stroop congruency). Here, we present representational similarity analysis (RSA) as a complementary approach that can powerfully inform representational components of cognitive control theories. We review several exemplary uses of RSA in this regard. We further show that most classical paradigms, given their factorial structure, can be optimized for RSA with minimal modification. Our aim is to illustrate how RSA can be incorporated into cognitive control investigations to shed new light on old questions.
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Affiliation(s)
- Michael C Freund
- Department of Psychological and Brain Sciences, Washington University in St Louis, St Louis, MO 63130, USA
| | - Joset A Etzel
- Department of Psychological and Brain Sciences, Washington University in St Louis, St Louis, MO 63130, USA
| | - Todd S Braver
- Department of Psychological and Brain Sciences, Washington University in St Louis, St Louis, MO 63130, USA; Department of Radiology, Washington University in St Louis, School of Medicine, St Louis, MO 63110, USA; Department of Neuroscience, Washington University in St Louis, School of Medicine, St Louis, MO 63110, USA.
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