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Deng X, Chen Y, Chen K, Ludyga S, Zhang Z, Cheval B, Zhu W, Chen J, Ishihara T, Hou M, Gao Y, Kamijo K, Yu Q, Hillman CH, Kramer AF, Erickson KI, Delli Paoli AG, McMorris T, Gerber M, Kuang J, Cheng Z, Pindus D, Dupuy O, Heath M, Herold F, Zou L. A friend in need is a friend indeed: Acute tandem rope skipping enhances inter-brain synchrony of socially avoidant individuals. Brain Cogn 2024; 180:106205. [PMID: 39053200 DOI: 10.1016/j.bandc.2024.106205] [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: 04/09/2024] [Revised: 07/15/2024] [Accepted: 07/15/2024] [Indexed: 07/27/2024]
Abstract
Team-based physical activity (PA) can improve social cognition; however, few studies have investigated the neurobiological mechanism underlying this benefit. Accordingly, a hyper-scanning protocol aimed to determine whether the interbrain synchrony (IBS) is influenced by an acute bout of team-based PA (i.e., tandem rope skipping). Specifically, we had socially avoidant participants (SOA, N=15 dyads) and their age-matched controls (CO, N=16 dyads) performed a computer-based cooperative task while EEG was recorded before and after two different experimental conditions (i.e., 30-min of team-based PA versus sitting). Phase locking value (PLV) was used to measure IBS. Results showed improved frontal gamma band IBS after the team-based PA compared to sitting when participants received successful feedback in the task (Mskipping = 0.016, Msittting = -0.009, p = 0.082, ηp2 = 0.387). The CO group showed a larger change in frontal and central gamma band IBS when provided failure feedback in the task (Mskipping = 0.017, Msittting = -0.009, p = 0.075, ηp2 = 0.313). Thus, results suggest that socially avoidant individuals may benefit from team-based PA via improved interbrain synchrony. Moreover, our findings deepen our understanding of the neurobiological mechanism by which team-based PA may improve social cognition among individuals with or without social avoidance.
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Affiliation(s)
- Xinmei Deng
- School of Psychology, Shenzhen University, Shenzhen, China; The Shenzhen Humanities & Social Sciences Key Research Bases of the Center for Mental Health, Shenzhen University, Shenzhen, China
| | - Yangdi Chen
- School of Psychology, Shenzhen University, Shenzhen, China
| | - Kexin Chen
- School of Psychology, Shenzhen University, Shenzhen, China
| | - Sebastian Ludyga
- Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
| | - Zhihao Zhang
- School of Psychology, Shenzhen University, Shenzhen, China
| | - Boris Cheval
- Department of Sport Sciences and Physical Education, Ecole Normale Supérieure Rennes, Bruz, France; Laboratory VIPS2, University of Rennes, Rennes, France
| | - Weijia Zhu
- School of Psychology, Shenzhen University, Shenzhen, China
| | - Jianyu Chen
- School of Psychology, Shenzhen University, Shenzhen, China
| | - Toru Ishihara
- Graduate School of Human Development and Environment, Kobe University, Kobe, Japan
| | - Meijun Hou
- School of Psychology, Shenzhen University, Shenzhen, China
| | - Yangping Gao
- School of Psychology, Shenzhen University, Shenzhen, China
| | - Keita Kamijo
- Faculty of Liberal Arts and Sciences, Chukyo University, Nagoya 466-8666, Japan
| | - Qian Yu
- Faculty of Education, University of Macau, Macau
| | - Charles H Hillman
- Center for Cognitive and Brain Health, Northeastern University, Boston, MA, USA; Department of Psychology, Northeastern University, Boston, MA, 02115, USA; Department of Physical Therapy, Movement, & Rehabilitation Sciences, Northeastern University, Boston, MA, 02115, USA
| | - Arthur F Kramer
- Center for Cognitive and Brain Health, Northeastern University, Boston, MA, USA; Department of Psychology, Northeastern University, Boston, MA, 02115, USA; Beckman Institute, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA
| | - Kirk I Erickson
- AdventHealth Research Institute, Neuroscience, Orlando, FL, 32101; Department of Psychology, University of Pittsburgh, Pittsburgh 15260
| | | | - Terry McMorris
- Department Sport and Exercise Science, Institute for Sport, University of Chichester, College Lane, Chichester, West Sussex PO19 6PE, United Kingdom
| | - Markus Gerber
- Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
| | - Jin Kuang
- School of Psychology, Shenzhen University, Shenzhen, China
| | - Zhihui Cheng
- School of Psychology, Shenzhen University, Shenzhen, China
| | - Dominika Pindus
- Beckman Institute, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA; Kinesiology and Community Health, University of Illinois at Chicago, Chicago, IL, USA; Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Olivier Dupuy
- Laboratory MOVE (EA 6314), Faculty of Sport Sciences, University of Poitiers, Poitiers, France; School of Kinesiology and Physical Activity Science (EKSAP), Faculty of Medicine. University of Montreal, Montreal, Canada
| | - Matthew Heath
- School of Kinesiology, Faculty of Health Sciences, University of Western Ontario, London ON N6A 3K7, Canada; Canadian Centre for Activity and Aging, University of Western Ontario, London ON, N6A 3K7, Canada; Graduate Program in Neuroscience, University of Western Ontario, London ON, N6A 3K7, Canada
| | - Fabian Herold
- Research Group Degenerative and Chronic Diseases, Movement, Faculty of Health Sciences Brandenburg, University of Potsdam, 14476 Potsdam, Germany
| | - Liye Zou
- School of Psychology, Shenzhen University, Shenzhen, China; Body-Brain-Mind Laboratory, School of Psychology, Shenzhen University, Shenzhen, China.
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Jia T, Sun J, McGeady C, Ji L, Li C. Enhancing Brain-Computer Interface Performance by Incorporating Brain-to-Brain Coupling. CYBORG AND BIONIC SYSTEMS 2024; 5:0116. [PMID: 38680535 PMCID: PMC11052607 DOI: 10.34133/cbsystems.0116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 03/24/2024] [Indexed: 05/01/2024] Open
Abstract
Human cooperation relies on key features of social interaction in order to reach desirable outcomes. Similarly, human-robot interaction may benefit from integration with human-human interaction factors. In this paper, we aim to investigate brain-to-brain coupling during motor imagery (MI)-based brain-computer interface (BCI) training using eye-contact and hand-touch interaction. Twelve pairs of friends (experimental group) and 10 pairs of strangers (control group) were recruited for MI-based BCI tests concurrent with electroencephalography (EEG) hyperscanning. Event-related desynchronization (ERD) was estimated to measure cortical activation, and interbrain functional connectivity was assessed using multilevel statistical analysis. Furthermore, we compared BCI classification performance under different social interaction conditions. In the experimental group, greater ERD was found around the contralateral sensorimotor cortex under social interaction conditions compared with MI without any social interaction. Notably, EEG channels with decreased power were mainly distributed around the frontal, central, and occipital regions. A significant increase in interbrain coupling was also found under social interaction conditions. BCI decoding accuracies were significantly improved in the eye contact condition and eye and hand contact condition compared with the no-interaction condition. However, for the strangers' group, no positive effects were observed in comparisons of cortical activations between interaction and no-interaction conditions. These findings indicate that social interaction can improve the neural synchronization between familiar partners with enhanced brain activations and brain-to-brain coupling. This study may provide a novel method for enhancing MI-based BCI performance in conjunction with neural synchronization between users.
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Affiliation(s)
- Tianyu Jia
- Lab of Intelligent and Biomimetic Machinery, Department of Mechanical Engineering,
Tsinghua University, Beijing, China
- Department of Bioengineering,
Imperial College London, London, UK
| | - Jingyao Sun
- Lab of Intelligent and Biomimetic Machinery, Department of Mechanical Engineering,
Tsinghua University, Beijing, China
| | - Ciarán McGeady
- Department of Bioengineering,
Imperial College London, London, UK
| | - Linhong Ji
- Lab of Intelligent and Biomimetic Machinery, Department of Mechanical Engineering,
Tsinghua University, Beijing, China
| | - Chong Li
- Lab of Intelligent and Biomimetic Machinery, Department of Mechanical Engineering,
Tsinghua University, Beijing, China
- School of Clinical Medicine,
Tsinghua University, Beijing, China
- Beijing Tsinghua Changgung Hospital,
Tsinghua University, Beijing, China
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3
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Réveillé C, Vergotte G, Perrey S, Bosselut G. Using interbrain synchrony to study teamwork: A systematic review and meta-analysis. Neurosci Biobehav Rev 2024; 159:105593. [PMID: 38373643 DOI: 10.1016/j.neubiorev.2024.105593] [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: 11/24/2023] [Revised: 01/19/2024] [Accepted: 02/14/2024] [Indexed: 02/21/2024]
Abstract
It has been proposed that interbrain synchrony (IBS) may help to elucidate the neural mechanisms underpinning teamwork. As hyperscanning studies have provided abundant findings on IBS in team environments, the current review aims to synthesize the findings of hyperscanning studies in a way that is relevant to the teamwork research. A systematic review was conducted. Included studies were classified according to the IPO (i.e. input, process, output) model of teamwork. Three multi-level meta-analyses were performed to quantify the associations between IBS and the three IPO variables. The methodology followed PRISMA guidelines and the protocol was pre-registered (https://osf.io/7h8sa/). Of the 229 studies, 41 were included, representing 1326 teams. The three meta-analyses found statistically significant positive effects, indicating a positive association between IBS and the three IPO teamwork variables. This study provides evidence that IBS is a relevant measure of the teamwork process and argues for the continued use of IBS to study teamwork.
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Affiliation(s)
- Coralie Réveillé
- EuroMov Digital Health in Motion (Univ Montpellier, IMT Mines d'Alès), 700 avenue du Pic Saint Loup, Montpellier 34090, France.
| | - Grégoire Vergotte
- EuroMov Digital Health in Motion (Univ Montpellier, IMT Mines d'Alès), 700 avenue du Pic Saint Loup, Montpellier 34090, France
| | - Stéphane Perrey
- EuroMov Digital Health in Motion (Univ Montpellier, IMT Mines d'Alès), 700 avenue du Pic Saint Loup, Montpellier 34090, France
| | - Grégoire Bosselut
- EuroMov Digital Health in Motion (Univ Montpellier, IMT Mines d'Alès), 700 avenue du Pic Saint Loup, Montpellier 34090, France
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Liu Y, Zhang Y, Zhong Y, Liu J, Zhang C, Meng Y, Pang N, Cheng X, Wang H. Favoritism or bias? Cooperation and competition under different intergroup relationships: evidence from EEG hyperscanning. Cereb Cortex 2024; 34:bhae131. [PMID: 38566514 DOI: 10.1093/cercor/bhae131] [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: 12/29/2023] [Revised: 03/08/2024] [Accepted: 03/09/2024] [Indexed: 04/04/2024] Open
Abstract
Cooperation and competition are the most common forms of social interaction in various social relationships. Intergroup relationships have been posited to influence individuals' interpersonal interactions significantly. Using electroencephalography hyperscanning, this study aimed to establish whether intergroup relationships influence interpersonal cooperation and competition and the underlying neural mechanisms. According to the results, the in-group Coop-index is better than the out-group, whereas the out-group Comp-index is stronger than the in-group. The in-group functional connectivity between the frontal-central region and the right temporoparietal junction in the β band was stronger in competition than cooperation. The out-group functional connectivity between the frontal-central region and the left temporoparietal junction in the α band was stronger in cooperation than competition. In both cooperation and competition, the in-group exhibited higher interbrain synchronization between the prefrontal cortex and parietal region in the θ band, as well as between the frontal-central region and frontal-central region in the α band, compared to the out-group. The intrabrain phase-locking value in both the α and β bands can effectively predict performance in competition tasks. Interbrain phase-locking value in both the α and θ bands can be effectively predicted in a performance cooperation task. This study offers neuroscientific evidence for in-group favoritism and out-group bias at an interpersonal level.
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Affiliation(s)
- Yingjie Liu
- School of Psychology and Mental Health, North China University of Science and Technology, 21 Bohai avenue, Caofeidian district, Tangshan, Hebei province 063210, China
- School of Public Health, North China University of Science and Technology, 21 Bohai avenue, Caofeidian district, Tangshan, Hebei province 063210, China
| | - Ye Zhang
- School of Psychology and Mental Health, North China University of Science and Technology, 21 Bohai avenue, Caofeidian district, Tangshan, Hebei province 063210, China
| | - Yifei Zhong
- School of Psychology and Mental Health, North China University of Science and Technology, 21 Bohai avenue, Caofeidian district, Tangshan, Hebei province 063210, China
| | - Jingyue Liu
- School of Psychology and Mental Health, North China University of Science and Technology, 21 Bohai avenue, Caofeidian district, Tangshan, Hebei province 063210, China
| | - Chenyu Zhang
- School of Psychology and Mental Health, North China University of Science and Technology, 21 Bohai avenue, Caofeidian district, Tangshan, Hebei province 063210, China
| | - Yujia Meng
- School of Psychology and Mental Health, North China University of Science and Technology, 21 Bohai avenue, Caofeidian district, Tangshan, Hebei province 063210, China
| | - Nan Pang
- School of Psychology and Mental Health, North China University of Science and Technology, 21 Bohai avenue, Caofeidian district, Tangshan, Hebei province 063210, China
| | - Xuemei Cheng
- Department of Mechanical and Electrical Engineering, Beijing Polytechnic, 100081
| | - He Wang
- School of Psychology and Mental Health, North China University of Science and Technology, 21 Bohai avenue, Caofeidian district, Tangshan, Hebei province 063210, China
- School of Public Health, North China University of Science and Technology, 21 Bohai avenue, Caofeidian district, Tangshan, Hebei province 063210, China
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Kurihara Y, Takahashi T, Osu R. The topology of interpersonal neural network in weak social ties. Sci Rep 2024; 14:4961. [PMID: 38418895 DOI: 10.1038/s41598-024-55495-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 02/23/2024] [Indexed: 03/02/2024] Open
Abstract
The strategies for social interaction between strangers differ from those between acquaintances, whereas the differences in neural basis of social interaction have not been fully elucidated. In this study, we examined the geometrical properties of interpersonal neural networks in pairs of strangers and acquaintances during antiphase joint tapping. Dual electroencephalogram (EEG) of 29 channels per participant was measured from 14 strangers and 13 acquaintance pairs.Intra-brain synchronizations were calculated using the weighted phase lag index (wPLI) for intra-brain electrode combinations, and inter-brain synchronizations were calculated using the phase locking value (PLV) for inter-brain electrode combinations in the theta, alpha, and beta frequency bands. For each participant pair, electrode combinations with larger wPLI/PLV than their surrogates were defined as the edges of the neural networks. We calculated global efficiency, local efficiency, and modularity derived from graph theory for the combined intra- and inter-brain networks of each pair. In the theta band networks, stranger pairs showed larger local efficiency than acquaintance pairs, indicating that the two brains of stranger pairs were more densely connected. Hence, weak social ties require extensive social interactions and result in high efficiency of information transfer between neighbors in neural network.
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Affiliation(s)
- Yuto Kurihara
- Graduate School of Human Sciences, Waseda University, Tokorozawa, Saitama, Japan
| | - Toru Takahashi
- Advanced Research Center for Human Sciences, Waseda University, Tokorozawa, Saitama, Japan
| | - Rieko Osu
- Faculty of Human Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa, Saitama, Japan.
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Deng X, Yang M, Chen X, Zhan Y. The role of mindfulness on theta inter-brain synchrony during cooperation feedback processing: An EEG-based hyperscanning study. Int J Clin Health Psychol 2023; 23:100396. [PMID: 37521502 PMCID: PMC10372402 DOI: 10.1016/j.ijchp.2023.100396] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 07/06/2023] [Accepted: 07/06/2023] [Indexed: 08/01/2023] Open
Abstract
Mindfulness appears to improve empathy and understanding in relationships, which are necessary for successful cooperation. However, the impact of mindfulness on cooperation has not been fully studied. This study used hyperscanning technique to examine the effect of mindfulness on the inter-brain synchrony of interacting individuals during the cooperative tasks. Forty-one dyads were randomly assigned to a mindfulness group or a non-mindfulness group. Dyads of the mindfulness group performed a short mindfulness exercise following a 15-minute mindfulness audio guidance. Dyads of the non-mindfulness group were instructed to rest quietly with their eyes closed. Then, simultaneously and continuously EEG was recorded from all dyads when they completed a computer-based cooperative game task. Reaction times (RTs) and success rates were used to indicate the behavioral performance, and phase locking value (PLV) was used to indicate the inter-brain synchrony. The results showed that (1) Greater theta inter-brain synchrony during the cooperative computer game tasks was observed in the mindfulness group than in the non-mindfulness group; (2) Greater theta inter-brain synchrony was observed in the successful cooperation conditions as compared to those in the failure cooperation conditions; (3) Greater theta inter-brain synchrony was observed at the frontal region as compared to those at the parietal-occipital region in the successful cooperation condition. The results expand the neural basis of the effects of mindfulness on cooperation feedback processing.
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Affiliation(s)
- Xinmei Deng
- School of Psychology, Shenzhen University, Shenzhen, China
- Center for Mental Health, Shenzhen University, Shenzhen, China
| | - Meng Yang
- School of Psychology, Shenzhen University, Shenzhen, China
- School of Psychology and Cognitive Science, East China Normal University, Shanghai, China
| | - Xiaomin Chen
- School of Psychology, Shenzhen University, Shenzhen, China
| | - Yong Zhan
- School of Psychology, Shenzhen University, Shenzhen, China
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7
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Zhang C, Tao R, Zhao H, Zheng K, Dai M, Xu S. Social relationship modulates advisor's brain response to advice-giving outcome evaluation: Evidence from an event-related potential study. Front Neurosci 2022; 16:1062095. [PMID: 36507321 PMCID: PMC9726896 DOI: 10.3389/fnins.2022.1062095] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 11/09/2022] [Indexed: 11/24/2022] Open
Abstract
Introduction Advice-giving is a double-edged sword in social interaction, which could bring benefits or considerable losses for the advisee. However, whether the social relationship affects the time course of advisor's brain response to outcome evaluation after the advice-giving remains unclear. Methods In the present study, we used event-related potentials (ERPs) to investigate the modulation of social relationships on advisor's outcome feedback processing after the advice-giving and related neural activities. Results The results showed larger feedback-related negativity (FRN) to a loss than to a gain both when the friends accepted and rejected the advice, whereas this effect only existed when the strangers rejected the advice, but not when they accepted it. In contrast, the P3 results demonstrated the enhanced neural sensitivity when the strangers accepted the advice than rejected it despite leading to a loss, while a larger P3 amplitude was found when the friends accepted the advice than rejected it and brought a gain. The theta oscillation results in the friend group revealed stronger theta power to loss when the advisee accepted the advice than rejected it. However, this effect was absent in the stranger group. Discussion These results suggested that outcome evaluation in advice-giving was not only influenced by feedback valence and social reward, but also modulated by social relationships. Our findings contributed to the understanding of the neural mechanisms of advice-giving outcome evaluation in a social context.
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Affiliation(s)
- Can Zhang
- Center for Magnetic Resonance Imaging Research and Key Laboratory of Applied Brain and Cognitive Sciences, Shanghai International Studies University, Shanghai, China
- College of International Business, Shanghai International Studies University, Shanghai, China
| | - Ruiwen Tao
- Center for Magnetic Resonance Imaging Research and Key Laboratory of Applied Brain and Cognitive Sciences, Shanghai International Studies University, Shanghai, China
- College of International Business, Shanghai International Studies University, Shanghai, China
| | - Hanxuan Zhao
- Center for Magnetic Resonance Imaging Research and Key Laboratory of Applied Brain and Cognitive Sciences, Shanghai International Studies University, Shanghai, China
- College of International Business, Shanghai International Studies University, Shanghai, China
| | - Kexin Zheng
- Center for Magnetic Resonance Imaging Research and Key Laboratory of Applied Brain and Cognitive Sciences, Shanghai International Studies University, Shanghai, China
- College of International Business, Shanghai International Studies University, Shanghai, China
| | - Mengge Dai
- Center for Magnetic Resonance Imaging Research and Key Laboratory of Applied Brain and Cognitive Sciences, Shanghai International Studies University, Shanghai, China
- College of International Business, Shanghai International Studies University, Shanghai, China
| | - Sihua Xu
- Center for Magnetic Resonance Imaging Research and Key Laboratory of Applied Brain and Cognitive Sciences, Shanghai International Studies University, Shanghai, China
- College of International Business, Shanghai International Studies University, Shanghai, China
- School of Education, Huaibei Normal University, Huaibei, China
- Anhui Engineering Research Center for Intelligent Computing and Application on Cognitive Behavior, Huaibei Normal University, Huaibei, China
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8
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Endevelt-Shapira Y, Djalovski A, Dumas G, Feldman R. Maternal chemosignals enhance infant-adult brain-to-brain synchrony. SCIENCE ADVANCES 2021; 7:eabg6867. [PMID: 34890230 PMCID: PMC8664266 DOI: 10.1126/sciadv.abg6867] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 10/26/2021] [Indexed: 05/25/2023]
Abstract
Maternal body odors serve as important safety-promoting and social recognition signals, but their role in human brain maturation is largely unknown. Utilizing ecological paradigms and dual- electroencephalography recording, we examined the effects of maternal chemosignals on brain-to-brain synchrony during infant-mother and infant-stranger interactions with and without the presence of maternal body odors. Neural connectivity of right-to-right brain theta synchrony emerged across conditions, sensitizing key nodes of the infant’s social brain during its maturational period. Infant-mother interaction elicited greater brain-to-brain synchrony; however, maternal chemosignals attenuated this difference. Infants exhibited more social attention, positive arousal, and safety/approach behaviors in the maternal chemosignals condition, which augmented infant-stranger neural synchrony. Human mothers use interbrain mechanisms to tune the infant’s social brain, and chemosignals may sustain the transfer of infant sociality from the mother-infant bond to life within social groups.
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Affiliation(s)
- Yaara Endevelt-Shapira
- Center for Developmental Social Neuroscience, The Interdisciplinary Center, Herzliya, Israel
| | - Amir Djalovski
- Center for Developmental Social Neuroscience, The Interdisciplinary Center, Herzliya, Israel
| | - Guillaume Dumas
- Precision Psychiatry and Social Physiology Laboratory, CHU Sainte-Justine Research Center, Department of Psychiatry, Université de Montréal, Montreal, QC, Canada
- Human Brain and Behavior Laboratory, Center for Complex Systems and Brain Sciences, Florida Atlantic University, Boca Raton, FL, USA
| | - Ruth Feldman
- Center for Developmental Social Neuroscience, The Interdisciplinary Center, Herzliya, Israel
- Yale University, Child Study Center, New Haven, CT 06519, USA
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Zhou X, Pan Y, Zhang R, Bei L, Li X. Mortality threat mitigates interpersonal competition: an EEG-based hyperscanning study. Soc Cogn Affect Neurosci 2021; 16:621-631. [PMID: 33755182 PMCID: PMC8138089 DOI: 10.1093/scan/nsab033] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 02/21/2021] [Accepted: 03/22/2021] [Indexed: 11/14/2022] Open
Abstract
Awareness of death has been shown to influence human cognition and behavior. Yet, how mortality threat (MT) impacts our daily social behavior remains elusive. To address this issue, we developed a dyadic experimental model and recruited 86 adults (43 dyads) to complete two computer-based tasks (i.e. competitive and cooperative button-pressing). We manipulated dyads’ awareness of death [MT vs neutral control (NC)] and simultaneously measured their neurophysiological activity using electroencephalography during the task. Several fundamental observations were made. First, the MT group showed significantly attenuated competition and slightly promoted cooperation. Second, compared to NC, MT significantly decreased gamma-band inter-brain synchronization (IBS) in the competitive context, which was associated with increased subjective fear of death within dyads. Notably, those effects were context-specific: we did not observe comparable results in the cooperative context. Finally, a machine-learning approach was successfully used to discriminate between the MT and NC groups based on accumulated IBS. Together, these findings indicate that MT to some extent mitigates interpersonal competition, and such mitigation might be associated with changes in gamma-band IBS.
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Affiliation(s)
- Xiaoyu Zhou
- Shanghai Key Laboratory of Mental Health and Psychological Crisis Intervention, Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai 200062, China
| | - Yafeng Pan
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm 17165, Sweden
| | - Ruqian Zhang
- Shanghai Key Laboratory of Mental Health and Psychological Crisis Intervention, Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai 200062, China
| | - Litian Bei
- Shanghai Key Laboratory of Mental Health and Psychological Crisis Intervention, Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai 200062, China
| | - Xianchun Li
- Shanghai Key Laboratory of Mental Health and Psychological Crisis Intervention, Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai 200062, China
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10
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Likens AD, Wiltshire TJ. Windowed multiscale synchrony: modeling time-varying and scale-localized interpersonal coordination dynamics. Soc Cogn Affect Neurosci 2021; 16:232-245. [PMID: 32991716 PMCID: PMC7812625 DOI: 10.1093/scan/nsaa130] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 06/30/2020] [Accepted: 09/18/2020] [Indexed: 12/18/2022] Open
Abstract
Social interactions are pervasive in human life with varying forms of interpersonal coordination emerging and spanning different modalities (e.g. behaviors, speech/language, and neurophysiology). However, during social interactions, as in any dynamical system, patterns of coordination form and dissipate at different scales. Historically, researchers have used aggregate measures to capture coordination over time. While those measures (e.g. mean relative phase, cross-correlation, coherence) have provided a wealth of information about coordination in social settings, some evidence suggests that multiscale coordination may change over the time course of a typical empirical observation. To address this gap, we demonstrate an underutilized method, windowed multiscale synchrony, that moves beyond quantifying aggregate measures of coordination by focusing on how the relative strength of coordination changes over time and the scales that comprise social interaction. This method involves using a wavelet transform to decompose time series into component frequencies (i.e. scales), preserving temporal information and then quantifying phase synchronization at each of these scales. We apply this method to both simulated and empirical interpersonal physiological and neuromechanical data. We anticipate that demonstrating this method will stimulate new insights on the mechanisms and functions of synchrony in interpersonal contexts using neurophysiological and behavioral measures.
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Affiliation(s)
- Aaron D Likens
- Department of Biomechanics, University of Nebraska at Omaha, 6001 Dodge Street Omaha, NE 68182
| | - Travis J Wiltshire
- Department of Cognitive Science & Artificial Intelligence, Tilburg University, (Room D104) Warandelaan 2, 5037 AB, Tilburg, The Netherlands
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11
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Wang C, Zhang Q. Word frequency effect in written production: Evidence from ERPs and neural oscillations. Psychophysiology 2021; 58:e13775. [PMID: 33522614 DOI: 10.1111/psyp.13775] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 12/29/2020] [Accepted: 01/05/2021] [Indexed: 01/02/2023]
Abstract
It has been widely documented that word frequency (WF) modulates language processing in various input and output modalities. WF effect has also been reported in the domain of written production; however, how WF affects written production is a controversial issue. The present study attempts to investigate the time course of and neural oscillation underlying the WF effect in handwritten production. Participants were asked to handwrite pictures names of high versus low WF, while concurrently recording EEG. EEG trials were extracted time-locked to picture onsets and then submitted to event-related potential analysis and time-frequency analysis. WF affected ERPs in the time windows of around 98-160 and 282-360 ms after picture onsets. More importantly, WF modulated the evoked and induced theta-band (4-8 Hz) neural oscillations in the time window of around 36-240 and 244-472 ms, respectively. Considering the time course of language production and the role of theta-band oscillation in long-term memory retrieval, we suggest that the two stages of the WF effect, respectively, reflect conceptual preparation and retrieval of orthographic word-forms in written production.
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Affiliation(s)
- Cheng Wang
- Department of Psychology, Zhejiang Normal University, Jinhua, China
| | - Qingfang Zhang
- Department of Psychology, Renmin University of China, Beijing, China
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