Neural NoiseHyperscanning is the simultaneous recording of brain activity from two or more individuals during social interaction. By measuring neural signals from multiple brains in parallel, hyperscanning enables the study of inter-brain synchronization, shared neural dynamics, and the neural mechanisms underlying social cognition, communication, cooperation, and competition.
The technique has been implemented with multiple neuroimaging modalities including eeg, fnirs, and fMRI, with EEG and fNIRS being most practical for naturalistic face-to-face interactions due to their portability and tolerance of movement. Studies have identified inter-brain coherence and phase synchronization as neural markers of social engagement, with synchronization in specific frequency bands correlating with cooperation, mutual attention, and communication quality.
Hyperscanning research faces methodological challenges including the statistical analysis of inter-brain coupling, controlling for shared sensory input that may drive correlated but non-social neural responses, and establishing the functional significance of inter-brain synchronization beyond epiphenomenal co-activation. The approach opens unique perspectives on social neuroscience and has potential applications in education, clinical assessment of social cognition deficits, and the design of collaborative bci-and-neural-decoding.