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Haihambo N, Li M, Ma Q, Baeken C, Deroost N, Baetens K, Van Overwalle F. Exciting the social butterfly: Anodal cerebellar transcranial direct current stimulation modulates neural activation during predictive social mentalizing. Int J Clin Health Psychol 2024; 24:100480. [PMID: 39055855 PMCID: PMC11269293 DOI: 10.1016/j.ijchp.2024.100480] [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: 09/22/2023] [Accepted: 06/20/2024] [Indexed: 07/28/2024] Open
Abstract
Transcranial Direct Current Stimulation (tDCS) has emerged as a promising tool for enhancing social cognition. The posterior cerebellum, which is part of the mentalizing network, has been implicated in social processes. In our combined tDCS-fMRI study, we investigated the effects of offline anodal cerebellar tDCS on activation in the cerebellum during social action prediction. Forty-one participants were randomly assigned to receive either anodal (2 mA) or sham (0 mA) stimulation over the midline of the posterior cerebellum for 20 min. Twenty minutes post stimulation, participants underwent a functional MRI scan to complete a social action prediction task, during which they had to correctly order randomly presented sentences that described either actions of social agents (based on their personality traits) or events of objects (based on their characteristics). As hypothesized, our results revealed that participants who received anodal cerebellar tDCS exhibited increased activation in the posterior cerebellar Crus 2 and lobule IX, and in key cerebral mentalizing areas, including the medial prefrontal cortex, temporo-parietal junction, and precuneus. Contrary to our hypotheses, participants who received anodal stimulation demonstrated faster responses to non-social objects compared to social agents, while sham participants showed no significant differences. We did not find a significant relationship between electric field magnitude, neural activation and behavioral outcomes. These findings suggest that tDCS targeting the posterior cerebellum selectively enhances activation in social mentalizing areas, while only facilitating behavioral performance of non-social material, perhaps because of a ceiling effect due to familiarity with social processing.
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Affiliation(s)
- Naem Haihambo
- Department of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Belgium
- Centre for Human Brain Health, University of Birmingham, Bochum, Germany
- Social Neuroscience, Research Center One Health Ruhr of the University Alliance Ruhr, Faculty of Medicine, Ruhr University Bochum, Germany
| | - Meijia Li
- Department of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Belgium
- Language Pathology and Brain Science MEG Lab, School of Communication Sciences, Beijing Language and Culture University, Beijing, China
| | - Qianying Ma
- Faculty of Medicine and Health Sciences, Department of Head and Skin, Ghent Experimental Psychiatry (GHEP) Lab, Ghent Experimental, Ghent University, Ghent 9000, Belgium
- Department of Psychiatry, Vrije Universiteit Brussel, Brussels 1090, Belgium
- Department of Electrical Engineering, Eindhoven University of Technology, Eindhoven 5600, The Netherlands
| | - Chris Baeken
- Department of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Belgium
| | - Natacha Deroost
- Department of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Belgium
| | - Kris Baetens
- Department of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Belgium
| | - Frank Van Overwalle
- Department of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Belgium
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Olivito G, Siciliano L, Leggio M, Van Overwalle F. Effective connectivity analysis of resting-state mentalizing brain networks in spinocerebellar ataxia type 2: A dynamic causal modeling study. Neuroimage Clin 2024; 43:103627. [PMID: 38843759 PMCID: PMC11190556 DOI: 10.1016/j.nicl.2024.103627] [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: 10/27/2023] [Revised: 05/31/2024] [Accepted: 05/31/2024] [Indexed: 06/24/2024]
Abstract
Neuroimaging studies on healthy subjects described the causal effective connectivity of cerebellar-cerebral social mentalizing networks, revealing the presence of closed-loops. These studies estimated effective connectivity by applying Dynamic Causal Modeling on task-related fMRI data of healthy subjects performing mentalizing tasks. Thus far, few studies have applied Dynamic Causal Modeling to resting-state fMRI (rsfMRI) data to test the effective connectivity within the cerebellar-cerebral mentalizing network in the absence of experimental manipulations, and no study applied Dynamic Causal Modeling on fMRI data of patients with cerebellar disorders typically showing social cognition deficits. Thus, in this research we applied spectral Dynamic Causal Modeling, to rsfMRI data of 13 patients affected by spinocerebellar ataxia type 2 (SCA2) and of 23 matched healthy subjects. Specifically, effective connectivity was tested between acknowledged mentalizing regions of interest: bilateral cerebellar Crus II, dorsal and ventral medial prefrontal cortex, bilateral temporo-parietal junctions and precuneus. SCA2 and healthy subjects shared some similarities in cerebellar-cerebral mentalizing effective connectivity at rest, confirming the presence of closed-loops between cerebellar and cerebral mentalizing regions in both groups. However, relative to healthy subjects, SCA2 patients showed effective connectivity variations mostly in cerebellar-cerebral closed loops, namely weakened inhibitory connectivity from the cerebellum to the cerebral cortex, but stronger inhibitory connectivity from the cerebral cortex to the cerebellum. The present study demonstrated that effective connectivity changes affect a function-specific mentalizing network in SCA2 patients, allowing to deepen the direction and strength of the causal effective connectivity mechanisms driven by the cerebellar damage associated with SCA2.
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Affiliation(s)
- Giusy Olivito
- Department of Psychology, Sapienza University of Rome, Italy; Ataxia Laboratory, IRCCS Santa Lucia Foundation, Rome, Italy
| | - Libera Siciliano
- Department of Psychology, Sapienza University of Rome, Italy; Ataxia Laboratory, IRCCS Santa Lucia Foundation, Rome, Italy
| | - Maria Leggio
- Department of Psychology, Sapienza University of Rome, Italy; Ataxia Laboratory, IRCCS Santa Lucia Foundation, Rome, Italy.
| | - Frank Van Overwalle
- Faculty of Psychology and Educational Sciences, Vrije Universiteit Brussel, Belgium
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Li M, Pu M, Ma Q, Heleven E, Baeken C, Baetens K, Deroost N, Van Overwalle F. One step too far: social cerebellum in norm-violating navigation. Soc Cogn Affect Neurosci 2024; 19:nsae027. [PMID: 38536051 PMCID: PMC11037276 DOI: 10.1093/scan/nsae027] [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: 08/27/2023] [Revised: 02/26/2024] [Accepted: 03/22/2024] [Indexed: 04/25/2024] Open
Abstract
Social norms are pivotal in guiding social interactions. The current study investigated the potential contribution of the posterior cerebellum, a critical region involved in perceiving and comprehending the sequential dynamics of social actions, in detecting actions that either conform to or deviate from social norms. Participants engaged in a goal-directed task in which they observed others navigating towards a goal. The trajectories demonstrated either norm-violating (trespassing forbidden zones) or norm-following behaviors (avoiding forbidden zones). Results revealed that observing social norm-violating behaviors engaged the bilateral posterior cerebellar Crus 2 and the right temporoparietal junction (TPJ) from the mentalizing network, and the parahippocampal gyrus (PHG) to a greater extent than observing norm-following behaviors. These mentalizing regions were also activated when comparing social sequences against non-social and non-sequential control conditions. Reproducing norm-violating social trajectories observed earlier, activated the left cerebellar Crus 2 and the right PHG compared to reproducing norm-following trajectories. These findings illuminate the neural mechanisms in the cerebellum associated with detecting norm transgressions during social navigation, emphasizing the role of the posterior cerebellum in detecting and signaling deviations from anticipated sequences.
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Affiliation(s)
- Meijia Li
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
| | - Min Pu
- Department of Decision Neuroscience and Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal 14558, Germany
| | - Qianying Ma
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
- Language Pathology and Brain Science MEG Lab, School of Communication Sciences, Beijing Language and Culture University, Beijing 100083, China
| | - Elien Heleven
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
| | - Chris Baeken
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
- Faculty of Medicine and Health Sciences, Department of Head and Skin, Ghent Experimental Psychiatry (GHEP) lab, Ghent University, Ghent 9000, Belgium
- Department of Psychiatry, University Hospital (UZBrussel), Brussels 1090, Belgium
- Department of Electrical Engineering, Eindhoven University of Technology, Eindhoven 5600, Netherlands
| | - Kris Baetens
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
| | - Natacha Deroost
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
| | - Frank Van Overwalle
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
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Li M, Haihambo N, Bylemans T, Ma Q, Heleven E, Baeken C, Baetens K, Deroost N, Van Overwalle F. Create your own path: social cerebellum in sequence-based self-guided navigation. Soc Cogn Affect Neurosci 2024; 19:nsae015. [PMID: 38554289 PMCID: PMC10981473 DOI: 10.1093/scan/nsae015] [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: 06/09/2023] [Revised: 12/19/2023] [Accepted: 02/14/2024] [Indexed: 04/01/2024] Open
Abstract
Spatial trajectory planning and execution in a social context play a vital role in our daily lives. To study this process, participants completed a goal-directed task involving either observing a sequence of preferred goals and self-planning a trajectory (Self Sequencing) or observing and reproducing the entire trajectory taken by others (Other Sequencing). The results indicated that in the observation phase, witnessing entire trajectories created by others (Other Sequencing) recruited cerebellar mentalizing areas (Crus 2 and 1) and cortical mentalizing areas in the precuneus, ventral and dorsal medial prefrontal cortex and temporo-parietal junction more than merely observing several goals (Self Sequencing). In the production phase, generating a trajectory by oneself (Self Sequencing) activated Crus 1 more than merely reproducing the observed trajectories from others (Other Sequencing). Additionally, self-guided observation and planning (Self Sequencing) activated the cerebellar lobules IV and VIII more than Other Sequencing. Control conditions involving non-social objects and non-sequential conditions where the trajectory did not have to be (re)produced revealed no differences with the main Self and Other Sequencing conditions, suggesting limited social and sequential specificity. These findings provide insights into the neural mechanisms underlying trajectory observation and production by the self or others during social navigation.
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Affiliation(s)
- Meijia Li
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
| | - Naem Haihambo
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
| | - Tom Bylemans
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
| | - Qianying Ma
- Language Pathology and Brain Science MEG Lab, School of Communication Sciences, Beijing Language and Culture University, Beijing 100083, China
| | - Elien Heleven
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
| | - Chris Baeken
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
- Faculty of Medicine and Health Sciences, Department of Head and Skin, Ghent Experimental Psychiatry (GHEP) Lab, Ghent University, Ghent 9000, Belgium
- Department of Psychiatry, University Hospital (UZBrussel), Brussels 1090, Belgium
- Department of Electrical Engineering, Eindhoven University of Technology, Eindhoven 5600, the Netherlands
| | - Kris Baetens
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
| | - Natacha Deroost
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
| | - Frank Van Overwalle
- Faculty of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Brussels 1050, Belgium
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Kawasoe R, Takano S, Yasumoto Y, Takeo Y, Matsushita K, Sugata H. Functional connectivity via the dorsolateral prefrontal cortex in the late phase of rest periods predicts offline learning. Neurosci Lett 2024; 822:137645. [PMID: 38237719 DOI: 10.1016/j.neulet.2024.137645] [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: 11/21/2023] [Revised: 01/03/2024] [Accepted: 01/15/2024] [Indexed: 01/21/2024]
Abstract
The relationship between offline learning gains and functional connectivity (FC) has been investigated in several studies. They have focused on average motor task performance and resting-state FC across subjects. Generally, individual differences are seen in both offline learning gain and neurophysiological profiles in resting-state FC. However, few studies have focused on the relationship between individual differences in offline learning gain and temporal characteristics of resting-state FC. The present study aimed to clarify this relationship between the two profiles. Thirty-four healthy right-handed participants performed a force-controlled motor task. Electroencephalography was performed during the 15-minute wakeful rest period between tasks. The results revealed a significant correlation between offline learning gain and FC between the contralateral dorsolateral prefrontal cortex (DLPFC) and contralateral primary motor cortex (M1), and ipsilateral primary somatosensory cortex (S1) during late phase of the rest interval. These results are consistent with the findings of previous studies showing the FC between M1, which is necessary for awake offline learning, and DLPFC, which is related to motor control. Additionally, sensory feedback related to force control may be caused by the interaction between contralateral DLPFC and ipsilateral S1. Our study shed light on the temporal profiles of resting-state FC associated with individual differences in offline learning.
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Affiliation(s)
- Ryushin Kawasoe
- Graduate School of Welfare and Health Science, Oita University, 700, Dannoharu, Oita 870-1192, Japan
| | - Sou Takano
- Faculty of Welfare and Health Science, Oita University, 700, Dannoharu, Oita 870-1192, Japan
| | - Yui Yasumoto
- Faculty of Welfare and Health Science, Oita University, 700, Dannoharu, Oita 870-1192, Japan
| | - Yuhi Takeo
- Department of Rehabilitation, Oita University Hospital, 1-1, Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan; Graduate School of Medicine, Oita University, 1-1, Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan
| | - Kojiro Matsushita
- Department of Mechanical Engineering, Gifu University, 1-1, Yanagito, Gifu 501-1193, Japan
| | - Hisato Sugata
- Graduate School of Welfare and Health Science, Oita University, 700, Dannoharu, Oita 870-1192, Japan; Faculty of Welfare and Health Science, Oita University, 700, Dannoharu, Oita 870-1192, Japan; Graduate School of Medicine, Oita University, 1-1, Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan.
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Haihambo N, Ma Q, Baetens K, Bylemans T, Heleven E, Baeken C, Deroost N, Van Overwalle F. Two is company: The posterior cerebellum and sequencing for pairs versus individuals during social preference prediction. COGNITIVE, AFFECTIVE & BEHAVIORAL NEUROSCIENCE 2023; 23:1482-1499. [PMID: 37821755 PMCID: PMC10684703 DOI: 10.3758/s13415-023-01127-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/04/2023] [Indexed: 10/13/2023]
Abstract
Previous studies have identified that the posterior cerebellum, which plays a role in processing temporal sequences in social events, is consistently and robustly activated when we predict future action sequences based on personality traits (Haihambo Haihambo et al. Social Cognitive and Affective Neuroscience 17(2), 241-251, 2022) and intentions (Haihambo et al. Cognitive, Affective, and Behavioral Neuroscience 23(2), 323-339, 2023). In the current study, we investigated whether these cerebellar areas are selectively activated when we predict the sequences of (inter)actions based on protagonists' preferences. For the first time, we also compared predictions based on person-to-person interactions or single person activities. Participants were instructed to predict actions of one single or two interactive protagonists by selecting them and putting them in the correct chronological order after being informed about one of the protagonists' preferences. These conditions were contrasted against nonsocial (involving objects) and nonsequencing (prediction without generating a sequence) control conditions. Results showed that the posterior cerebellar Crus 1, Crus 2, and lobule IX, alongside the temporoparietal junction and dorsal medial prefrontal cortex were more robustly activated when predicting sequences of behavior of two interactive protagonists, compared to one single protagonist and nonsocial objects. Sequence predictions based on one single protagonist recruited lobule IX activation in the cerebellum and more ventral areas of the medial prefrontal cortex compared to a nonsocial object. These cerebellar activations were not found when making predictions without sequences. Together, these findings suggest that cerebellar mentalizing areas are involved in social mentalizing processes which require temporal sequencing, especially when they involve social interactions, rather than behaviors of single persons.
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Affiliation(s)
- Naem Haihambo
- Department of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Pleinlaan 2, B-1050, Brussels, Belgium.
| | - Qianying Ma
- Department of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Pleinlaan 2, B-1050, Brussels, Belgium
| | - Kris Baetens
- Department of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Pleinlaan 2, B-1050, Brussels, Belgium
| | - Tom Bylemans
- Department of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Pleinlaan 2, B-1050, Brussels, Belgium
| | - Elien Heleven
- Department of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Pleinlaan 2, B-1050, Brussels, Belgium
| | - Chris Baeken
- Department of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Pleinlaan 2, B-1050, Brussels, Belgium
- Department of Psychiatry, University Hospital UZBrussel, Brussels, Belgium
- Department of Electrical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands
| | - Natacha Deroost
- Department of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Pleinlaan 2, B-1050, Brussels, Belgium
| | - Frank Van Overwalle
- Department of Psychology and Center for Neuroscience, Vrije Universiteit Brussel, Pleinlaan 2, B-1050, Brussels, Belgium
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Can transcranial direct current stimulation (tDCS) of the cerebellum improve implicit social and cognitive sequence learning? Int J Clin Health Psychol 2023; 23:100355. [PMID: 36415612 PMCID: PMC9674896 DOI: 10.1016/j.ijchp.2022.100355] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 11/06/2022] [Indexed: 11/17/2022] Open
Abstract
Accumulating evidence shows that the posterior cerebellum is involved in mentalizing inferences of social events by detecting sequence information in these events, and building and updating internal models of these sequences. By applying anodal and sham cerebellar transcranial direct current stimulation (tDCS) on the posteromedial cerebellum of healthy participants, and using a serial reaction time (SRT) task paradigm, the current study examined the causal involvement of the cerebellum in implicitly learning sequences of social beliefs of others (Belief SRT) and non-social colored shapes (Cognitive SRT). Apart from the social or cognitive domain differences, both tasks were structurally identical. Results of anodal stimulation (i.e., 2 mA for 20 min) during the social Belief SRT task, did not show significant improvement in reaction times, however it did reveal generally faster responses for the Cognitive SRT task. This improved performance could also be observed after the cessation of stimulation after 30 min, and up to one week later. Our findings suggest a general positive effect of anodal cerebellar tDCS on implicit non-social Cognitive sequence learning, supporting a causal role of the cerebellum in this learning process. We speculate that the lack of tDCS modulation of the social Belief SRT task is due to the familiar and overlearned nature of attributing social beliefs, suggesting that easy and automatized tasks leave little room for improvement through tDCS.
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Bylemans T, Heleven E, Baetens K, Deroost N, Baeken C, Van Overwalle F. Mentalizing and narrative coherence in autistic adults: Cerebellar sequencing and prediction. Neurosci Biobehav Rev 2023; 146:105045. [PMID: 36646260 DOI: 10.1016/j.neubiorev.2023.105045] [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: 10/29/2022] [Revised: 01/11/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023]
Abstract
BYLEMANS, T., et al. Mentalizing and narrative coherence in autistic adults: Cerebellar sequencing and prediction. NEUROSCI BIOBEHAV REV, 2022. - This review focuses on autistic adults and serves 4 purposes: (1) providing an overview of their difficulties regarding mentalizing (understanding others' mental states) and narrative coherence (structured storytelling), (2) highlighting the relations between both skills by examining behavioral observations and shared neural substrates, (3) providing an integrated perspective regarding novel diagnostic tools and support services, and (4) raising awareness of adult autism. We suggest that mentalizing and narrative coherence are related at the behavioral level and neural level. In addition to the traditional mentalizing network, the cerebellum probably serves as an important hub in shared cerebral networks implicated in mentalizing and narrative coherence. Future autism research and support services should tackle new questions within a framework of social cerebellar (dys)functioning.
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Affiliation(s)
- Tom Bylemans
- Brain, Body and Cognition, Department of Psychology, and Center for Neuroscience, Vrije Universiteit Brussel, Brussels, Belgium.
| | - Elien Heleven
- Brain, Body and Cognition, Department of Psychology, and Center for Neuroscience, Vrije Universiteit Brussel, Brussels, Belgium.
| | - Kris Baetens
- Brain, Body and Cognition, Department of Psychology, and Center for Neuroscience, Vrije Universiteit Brussel, Brussels, Belgium.
| | - Natacha Deroost
- Brain, Body and Cognition, Department of Psychology, and Center for Neuroscience, Vrije Universiteit Brussel, Brussels, Belgium.
| | - Chris Baeken
- Ghent University: Department of Head and Skin (UZGent), Ghent Experimental Psychiatry (GHEP) Lab, Belgium; Vrije Universiteit Brussel (VUB), Department of Psychiatry, University Hospital (UZ Brussel), Brussels, Belgium; Eindhoven University of Technology, Department of Electrical Engineering, Eindhoven, the Netherlands.
| | - Frank Van Overwalle
- Brain, Body and Cognition, Department of Psychology, and Center for Neuroscience, Vrije Universiteit Brussel, Brussels, Belgium.
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