Key result
Synchronization tasks with a social frame and interoceptive focus yielded significantly higher oxygenated hemoglobin coherence in the left prefrontal cortex compared to tasks without a social frame.
Why the study?
How the processing of internal bodily signals contributes to interpersonal synchronization remains an open question.
Does a social frame and interoceptive focus improve inter-brain hemodynamic coherence in the prefrontal cortex during dyadic synchronization tasks?
Does a social frame and interoceptive focus improve inter-brain hemodynamic coherence in the prefrontal cortex during dyadic synchronization tasks?
Interoceptive focus and a social frame enhance left prefrontal cortex interpersonal tuning during synchronization tasks.
May link interoceptive signals to dyadic PFC synchrony; leaves open whether fNIRS hyperscanning informs clinical interpersonal therapies.
Grossberg’s classification of adaptive resonance mechanisms includes the cognitive-emotional resonances that support conscious feelings and recognition of them. In this regard, a relevant question concerns the processing of signals deriving from the internal body and their contribution to interpersonal synchronization. This study aims to assess hemodynamic inter-subject coherence in the prefrontal cortex (PFC) through functional near-infrared spectroscopy (fNIRS) hyperscan recording during dyadic synchronization tasks proposed with or without a social frame and performed in two distinct interoceptive conditions: focus and no focus on the breathing condition. Individuals’ hemodynamic data (oxygenated and de-oxygenated hemoglobin (O2Hb and HHb, respectively)) were recorded through fNIRS hyperscanning, and coherence analysis was performed. The findings showed a significantly higher O2Hb coherence in the left PFC when the dyads performed the synchronization tasks with a social frame compared with no social frame in the focus condition. Overall, the evidence suggests that the interoceptive focus and the presence of a social frame favor the manifestation of a left PFC interpersonal tuning during synchronization tasks.
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Balconi et al. (2023) studied this question. Synchronization tasks with a social frame vs. Synchronization tasks without a social frame was evaluated on Hemodynamic inter-subject coherence in the prefrontal cortex. Synchronization tasks with a social frame and interoceptive focus yielded significantly higher oxygenated hemoglobin coherence in the left prefrontal cortex compared to tasks without a social frame.
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