音楽が人とのつながりを促進する脳の仕組みを解明(Striking a chord: How music primes our minds for connection)

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2026-03-18 イェール大学

イェール大学の研究は、音楽が人の認知や対人関係の形成に影響を与えることを示した。実験では、音楽を聴くことで他者との共感や協調性が高まり、社会的つながりを築きやすくなることが確認された。特にリズムやメロディが感情や注意を調整し、相手との心理的距離を縮める役割を果たすと考えられる。また、音楽は意思決定やコミュニケーションの質にも影響し、集団内の協力行動を促進する可能性が示唆された。本研究は音楽が単なる娯楽にとどまらず、人間の社会的認知や行動に深く関与することを明らかにした。

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対面で視線を交わしながら協和音のコード進行を聴くと、社会的システムの神経活動が強化される Listening to a consonant chord progression during live face-to-face gaze enhances neural activity in social systems

Dash A. Watts, AZA Stephen Allsop, Simone Compton, Xian Zhang, J. Adam Noah and Joy Hirsch
Journal of Neuroscience  Published:5 March 2026
DOI:https://doi.org/10.1523/JNEUROSCI.1116-25.2026

Abstract

Although music has been associated with increased pro-social behavior, the underlying mechanisms for music-facilitated social benefits are not known. We test the hypothesis that chord progressions promote social bonding between dyads by shared temporal alignment of frequency spectra. Two musical conditions were presented to 20 pairs of participants (equal numbers of males and females), one with either a structured chord and predictable progression and the other with an unstructured and unpredictable composition of the same notes. Functional near infrared spectroscopy signals were recorded simultaneously from both partners during the music conditions with and without gazing at a live partner’s face. The right angular gyrus, right somatosensory association cortex and bilateral dorsal lateral prefrontal cortex increased activation during live face gaze combined with the structured chord progression condition. Further, subjective ratings of subjective connectedness were associated with both activity in right superior and middle temporal gyri during face gaze and the right angular gyrus during chord progressions. These findings link live face-to-face gaze while listening to structured chord progressions to neural systems that are responsive to predictive alignment of co-occurring acoustic spectra and perceptions of social connectedness.

Significance Statement Music is universally appreciated as a promoter of social bonding and a candidate for therapeutics for social disconnection syndromes. However, a theoretical framework and the necessary link between neural correlates of social behavior and specific features of music are not established. We test the hypothesis that listening to consonant chord progressions during live face gaze relative to corresponding scrambled notes promotes social bonding and activates social neural systems. Subjective ratings of social connectedness, neural activity observed in social systems, and cross-brain neural synchrony support the hypothesis that musical chord progressions are a salient musical feature that upregulates social neural systems. These findings advance an evidence-based framework for use of musical chord progressions to treat symptoms of social disconnection and isolation.

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