Hyperscanning Alone Cannot Prove Causality. Multibrain Stimulation Can

Trends in Cognitive Sciences, Journal Year: 2020, Volume and Issue: 25(2), P. 96 - 99

Published: Dec. 5, 2020

Brains that work together, couple together through interbrain synchrony. Does synchrony causally facilitate social interaction? This question cannot be answered by simply recording from multiple brains (hyperscanning). It instead requires causal protocols entailing their simultaneous stimulation (multibrain stimulation). We highlight promising findings and future horizons of this nascent field.

Language: Английский

---

Learningfromothers is good,withothers is better: the role of social interaction in human acquisition of new knowledge

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2022, Volume and Issue: 378(1870)

Published: Dec. 26, 2022

Learning in humans is highly embedded social interaction: since the very early stages of our lives, we form memories and acquire knowledge about world from with others. Yet, within cognitive science neuroscience, human learning mainly studied isolation. The focus past research has been either exclusively on learner or (less often) teacher, primary aim determining developmental trajectories and/or effective teaching techniques. In fact, interaction rarely explicitly taken as a variable interest, despite being medium through which occurs, especially development, but also adulthood. Here, review behavioural neuroimaging learning, specifically focusing models how semantic others, include both well adult work. We then identify potential mechanisms that support their neural correlates. to outline key new directions for experiments investigating acquired its ecological niche, i.e. socially, framework two-person neuroscience approach. This article part theme issue ‘Concepts engagement inner experiences’.

Language: Английский

---

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

---

Revealing the neurobiology underlying interpersonal neural synchronization with multimodal data fusion

Neuroscience & Biobehavioral Reviews, Journal Year: 2023, Volume and Issue: 146, P. 105042 - 105042

Published: Jan. 11, 2023

Humans synchronize with one another to foster successful interactions. Here, we use a multimodal data fusion approach the aim of elucidating neurobiological mechanisms by which interpersonal neural synchronization (INS) occurs. Our meta-analysis 22 functional magnetic resonance imaging and 69 near-infrared spectroscopy hyperscanning experiments (740 3721 subjects) revealed robust brain regional correlates INS in right temporoparietal junction left ventral prefrontal cortex. Integrating this meta-analytic information public databases, biobehavioral brain-functional association analyses suggested that involves sensory-integrative hubs connections mentalizing attention networks. On molecular genetic levels, found be associated GABAergic neurotransmission layer IV/V neuronal circuits, protracted developmental gene expression patterns, disorders neurodevelopment. Although limited indirect nature phenotypic-molecular analyses, our findings generate new testable hypotheses on basis INS.

Language: Английский

---

A practical guide to EEG hyperscanning in joint action research: from motivation to implementation

Social Cognitive and Affective Neuroscience, Journal Year: 2024, Volume and Issue: 19(1)

Published: Jan. 1, 2024

Developments in cognitive neuroscience have led to the emergence of hyperscanning, simultaneous measurement brain activity from multiple people. Hyperscanning is useful for investigating social cognition, including joint action, because its ability capture neural processes that occur within and between people as they coordinate actions toward a shared goal. Here, we provide practical guide researchers considering using hyperscanning study action seeking avoid frequently raised concerns skeptics. We focus specifically on Electroencephalography (EEG) which widely available optimally suited capturing fine-grained temporal dynamics coordination. Our guidelines cover questions are likely arise when planning project, ranging whether appropriate answering one's research considerations design, dependent variable selection, data analysis visualization. By following clear facilitate careful consideration theoretical implications design choices other methodological decisions, can mitigate interpretability issues maximize benefits paradigms.

Language: Английский

---

A hierarchical model for interpersonal verbal communication

Social Cognitive and Affective Neuroscience, Journal Year: 2020, Volume and Issue: 16(1-2), P. 246 - 255

Published: Oct. 28, 2020

The ability to use language makes us human. For decades, researchers have been racking their minds understand the relation between and human brain. Nevertheless, most previous neuroscientific research has investigated this issue from a 'single-brain' perspective, thus neglecting nature of interpersonal communication through language. With development modern hyperscanning techniques, begun probing neurocognitive processes underlying verbal examined involvement neural synchronization (INS) in communication. However, cases, INS are obscure. To tentatively address issue, we propose herein hierarchical model based on findings growing amount research. We suggest that three levels primarily involved closely associated with distinctive patterns INS. Different these modulate each other bidirectionally. Furthermore, argued two (shared representation predictive coding) might coexist work together at level facilitate successful hope will inspire further innovative several directions within fields social cognitive neuroscience.

Language: Английский

---

Endogenous sources of interbrain synchrony in duetting pianists

Cerebral Cortex, Journal Year: 2021, Volume and Issue: 32(18), P. 4110 - 4127

Published: Nov. 25, 2021

Abstract When people interact with each other, their brains synchronize. However, it remains unclear whether interbrain synchrony (IBS) is functionally relevant for social interaction or stems from exposure of individual to identical sensorimotor information. To disentangle these views, the current dual-EEG study investigated amplitude-based IBS in pianists jointly performing duets containing a silent pause followed by tempo change. First, we manipulated similarity anticipated change and measured during pause, hence, capturing alignment purely endogenous, temporal plans without sound movement. Notably, right posterior gamma was higher when partners planned similar tempi, predicted partners’ tempi matched after modulated only real, not surrogate pairs. Second, familiarity partner’s actions joint performance sound. Although information across conditions, were unfamiliar other’s part had attend more closely performance. These combined findings demonstrate that merely an epiphenomenon shared but can also hinge on cognitive processes crucial behavioral successful interaction.

Language: Английский

---

Interpersonal synchronization of spontaneously generated body movements

iScience, Journal Year: 2023, Volume and Issue: 26(3), P. 106104 - 106104

Published: Feb. 1, 2023

Interpersonal movement synchrony (IMS) is central to social behavior in several species. In humans, IMS typically studied using structured tasks requiring participants produce specific body movements. Instead, spontaneously generated (i.e., not instructed) movements have received less attention. To test whether spontaneous synchronize interpersonally, we recorded full-body kinematics from dyads of who were only asked sit face-to-face and look at each other. We manipulated interpersonal (i) visual contact (ii) spatial proximity. found that synchronized across when they could see other regardless This synchronization emerged very rapidly did selectively entail homologous parts (as mimicry); rather, the generalized nearly all possible combinations parts. Hence, alone can lead IMS. More generally, our results highlight be under natural unconstrained conditions.

Language: Английский

---

Shared intentionality modulates interpersonal neural synchronization at the establishment of communication system

Communications Biology, Journal Year: 2023, Volume and Issue: 6(1)

Published: Aug. 10, 2023

Whether and how shared intentionality (SI) influences the establishment of a novel interpersonal communication system is poorly understood. To investigate this issue, we designed coordinating symbolic game (CSCG) applied behavioral, functional near-infrared spectroscopy (fNIRS)-based hyperscanning, hyper-transcranial alternating current stimulation (hyper-tACS) methods. Here show that SI strong contributor to communicative accuracy. Moreover, SI, accuracy, neural synchronization (INS) in right superior temporal gyrus (rSTG) are higher when dyads successfully establish system. Furthermore, accuracy by increasing INS. Additionally, using time series long short-term memory network analyses, find INS can predict at early formation stage Importantly, partially mediates relationship between only In contrast, established, no longer contribute Finally, hyper-tACS experiment confirms has causal effect on These findings suggest behavioral mechanism, subserved INS, underlies

Language: Английский

---

Is neuroimaging ready for the classroom? A systematic review of hyperscanning studies in learning

NeuroImage, Journal Year: 2023, Volume and Issue: 281, P. 120367 - 120367

Published: Sept. 7, 2023

Whether education research can be informed by findings from neuroscience studies has been hotly debated since Bruer's (1997) famous claim that and are "a bridge too far". However, this came before recent advancements in portable electroencephalography (EEG) functional near-infrared spectroscopy (fNIRS) technologies, second-person techniques brought about significant headway understanding instructor-learner interactions the classroom. To explore whether still two very separate fields, we systematically review 15 hyperscanning were conducted real-world classrooms or implemented a teaching-learning task to investigate dynamics. Findings investigation illustrate inter-brain synchrony between instructor learner is an additional valuable dimension understand complex web of instructor- learner-related variables influence learning. Importantly, these demonstrate possibility conducting classroom with neuroimaging highlight potential such providing translatable implications. Once thought as incompatible, successful coupling now within sight.

Language: Английский

---