Interbrain synchrony: on wavy ground

Trends in Neurosciences, Journal Year: 2022, Volume and Issue: 45(5), P. 346 - 357

Published: Feb. 28, 2022

Language: Английский

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Maternal chemosignals enhance infant-adult brain-to-brain synchrony

Science Advances, Journal Year: 2021, Volume and Issue: 7(50)

Published: Dec. 10, 2021

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 dual- electroencephalography recording, we examined the effects of maternal chemosignals on brain-to-brain synchrony during infant-mother infant-stranger interactions with without presence odors. Neural connectivity right-to-right theta emerged across conditions, sensitizing key nodes infant’s its maturational period. Infant-mother interaction elicited greater synchrony; however, attenuated this difference. Infants exhibited more attention, positive arousal, safety/approach behaviors condition, which augmented neural synchrony. Human mothers use interbrain mechanisms to tune brain, may sustain transfer infant sociality from mother-infant bond life within groups.

Language: Английский

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Technologically-assisted communication attenuates inter-brain synchrony

NeuroImage, Journal Year: 2022, Volume and Issue: 264, P. 119677 - 119677

Published: Oct. 13, 2022

The transition to technologically-assisted communication has permeated all facets of human social life; yet, its impact on the brain is still unknown and effects may be particularly intense during periods developmental transitions. Applying a two-brain perspective, current preregistered study utilized hyperscanning EEG measure brain-to-brain synchrony in 62 mother-child pairs at adolescence (child age; M = 12.26, range 10-14) live face-to-face interaction versus remote communication. elicited 9 significant cross-brain links between densely inter-connected frontal temporal areas beta [14-30 Hz]. Mother's right region connected with child's left frontal, temporal, central regions, suggesting regulatory role organizing dynamics. In contrast, only 1 cross-brain-cross-hemisphere link, attenuating robust right-to-right-brain connectivity moments that communicates socio-affective signals. Furthermore, while level behavior was comparable two interactions, brain-behavior associations emerged exchange. Mother-child temporal-temporal linked shared gaze degree child engagement empathic correlated frontal-frontal synchrony. Our findings indicate co-presence underpinned by specific neurobiological processes should studied depth. Much further research needed tease apart whether "Zoom fatigue" experienced technological stem, part, from overload more limited inter-brain connections address potential cost technology for maturation, among youth.

Language: Английский

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Quantification of inter-brain coupling: A review of current methods used in haemodynamic and electrophysiological hyperscanning studies

NeuroImage, Journal Year: 2023, Volume and Issue: 280, P. 120354 - 120354

Published: Sept. 4, 2023

Hyperscanning is a form of neuroimaging experiment where the brains two or more participants are imaged simultaneously whilst they interact. Within domain social neuroscience, hyperscanning increasingly used to measure inter-brain coupling (IBC) and explore how brain responses change in tandem during interaction. In addition cognitive research, some have suggested that quantification interplay between interacting can be as biomarker for variety mechanisms aswell investigate mental health developmental conditions including schizophrenia, anxiety autism. However, many different methods been quantify this lead questions about comparability across studies reduce research reproducibility. Here, we review quantifying IBC, suggest ways moving forward. Following PRISMA guidelines, reviewed 215 studies, four imaging modalities: functional near-infrared spectroscopy (fNIRS), magnetic resonance (fMRI), electroencephalography (EEG) magnetoencephalography (MEG). Overall, identified total 27 compute IBC. The most common modality fNIRS, by 119 89 which adopted wavelet coherence. Based on results literature survey, first report summary statistics field, followed brief overview each signal obtained from hyperscanning. We then discuss rationale, assumptions suitability method modalities Finally, issues surrounding interpretation method.

Language: Английский

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Spontaneous dyadic behavior predicts the emergence of interpersonal neural synchrony

NeuroImage, Journal Year: 2023, Volume and Issue: 277, P. 120233 - 120233

Published: June 21, 2023

Synchronization of neural activity across brains – interpersonal synchrony (INS) is emerging as a powerful marker social interaction that predicts success multi-person coordination, communication, and cooperation. As the origins INS are poorly understood, we tested whether how might emerge from spontaneous dyadic behavior. We recorded (EEG) human behavior (full-body kinematics, eye movements facial expressions) while dyads participants were instructed to look at each other without speaking or making co-verbal gestures. made four fundamental observations. First, despite absence structured task, emerged spontaneously only when able see other. Second, show such INS, comprising specific spectral topographic profiles, did not merely reflect intra-personal modulations activity, but it rather reflected real-time dyad-specific coupling activities. Third, using state-of-art video-image processing deep learning, extracted temporal unfolding three notable behavioral cues body movement, contact, smiling demonstrated these behaviors also synchronized within dyads. Fourth, probed correlates in behaviors. Using cross-correlation Granger causality analyses, anticipate fact cause INS. These results provide proof-of-concept evidence for studying under natural unconstrained conditions. Most importantly, suggest could be conceptualized an emergent property two coupled systems: entrainment phenomenon, promoted by

Language: Английский

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Mother–Infant Brain-to-Brain Synchrony Patterns Reflect Caregiving Profiles

Biology, Journal Year: 2023, Volume and Issue: 12(2), P. 284 - 284

Published: Feb. 10, 2023

Biobehavioral synchrony, the coordination of physiological and behavioral signals between mother infant during social contact, tunes child's brain to world. Probing this mechanism from a two-brain perspective, we examine associations patterns mother-infant inter-brain synchrony two well-studied maternal orientations-sensitivity intrusiveness-which have repeatedly been shown predict positive negative socio-emotional outcomes, respectively. Using dual-electroencephalogram (EEG) recordings, measure connectivity 60 mothers their 5- 12-month-old infants face-to-face interaction. Thirty connections show significantly higher correlations real interaction compared surrogate data. Brain-behavior indicate that sensitivity linked with greater neural whereas intrusiveness is associated lower coordination. Post hoc analysis reveals mother-right-frontal-infant-left-temporal connection particularly sensitive mother's style, while mother-left-frontal-infant-right-temporal indexes intrusive style. Our results support perspective by which mature brains externally regulate immature living suggest one pathway exert long-term effect may relate provision coordinated inputs its period maturation.

Language: Английский

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Generation WhatsApp: inter-brain synchrony during face-to-face and texting communication

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Feb. 1, 2024

Abstract Texting has become one of the most prevalent ways to interact socially, particularly among youth; however, effects text messaging on social brain functioning are unknown. Guided by biobehavioral synchrony frame, this pre-registered study utilized hyperscanning EEG evaluate interbrain during face-to-face versus texting interactions. Participants included 65 mother-adolescent dyads observed conversation compared from different rooms. Results indicate that both and communication elicit significant neural surrogate data, demonstrating for first time brain-to-brain texting. Direct comparison between two interactions highlighted 8 fronto-temporal links were significantly stronger in interaction Our findings suggest partners co-create a network inter-brain connections live exchanges. The degree improvement partners' right-frontal-right-frontal connectivity correlated with greater behavioral synchrony, suggesting well-researched connection may be specific communication. while technology-based allows humans synchronize afar, remain superior mode interpersonal connection. We conclude discussing potential benefits drawbacks pervasive use texting, youth.

Language: Английский

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Interpersonal motor synchrony in autism: a systematic review and meta-analysis

Frontiers in Psychiatry, Journal Year: 2024, Volume and Issue: 15

Published: Feb. 19, 2024

Introduction Interpersonal motor synchrony (IMS) is the spontaneous, voluntary, or instructed coordination of movements between interacting partners. Throughout life cycle, it shapes social exchanges and interplays with intra- inter-individual characteristics that may diverge in Autism Spectrum Disorder (ASD). Here we perform a systematic review meta-analysis to summarize extant literature quantify evidence about reduced IMS dyads including at least one participant diagnosis ASD. Methods Empirical from sixteen experimental studies was systematically reviewed, encompassing spontaneous paradigms as well paucity measures used assess IMS. Of these, thirteen (n = 512 dyads) contributed an situ neurotypical partner (TD) for ASD control groups, which could be meta-analyses. Results Reduced synchronization ASD-TD emerged both meta-analyses, although small large effect sizes (i.e., Hedge’s g) favor group are consistent data (Hedge’s g .85, p < 0.001, 95% CI[.35, 1.35], PI[-.89, 2.60]). Discussion Uncertainty discussed relative type task, measures, age range considered each study. We further discuss sharing similar experiences world might help synchronize another. Future should not only whether consistently observed how this exchanges, but also explore ASD-ASD during interpersonal exchanges.

Language: Английский

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A history of previous childbirths is linked to women's white matter brain age in midlife and older age

Human Brain Mapping, Journal Year: 2021, Volume and Issue: 42(13), P. 4372 - 4386

Published: June 12, 2021

Maternal brain adaptations occur in response to pregnancy, but little is known about how parity impacts white matter and ageing trajectories later life. Utilising global regional age prediction based on multi-shell diffusion-weighted imaging data, we investigated the association between previous childbirths 8,895 women UK Biobank cohort (age range = 54-81 years). The results showed that number of was negatively associated with age, potentially indicating a protective effect Both grey estimates unique contributions childbirths, suggesting partly independent processes. Corpus callosum contributed uniquely stronger relationship relative several other tracts. While our findings demonstrate link reproductive history characteristics life, longitudinal studies are required establish causality determine may influence women's across lifespan.

Language: Английский

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The Control of Movements via Motor Gamma Oscillations

Frontiers in Human Neuroscience, Journal Year: 2022, Volume and Issue: 15

Published: Jan. 17, 2022

The ability to perform movements is vital for our daily life. Our actions are embedded in a complex environment where we need deal efficiently the face of unforeseen events. Neural oscillations play an important role basic sensorimotor processes related execution and preparation movements. In this review, I will describe state art regarding motor gamma control Experimental evidence from electrophysiological studies has shown that accomplish range functions beyond merely signaling However, these additional aspects associated with oscillation remain be fully clarified. Future work on different spatial, temporal spectral scales required further understand implications control.

Language: Английский

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