Distinguishing social interaction-specific Inter-Brain Synchrony from other non-specific neural synchrony

Distinguishing social interaction-specific Inter-Brain Synchrony from other non-specific neural synchrony - Distinguishing social interaction-specific Inter-Brain Synchrony from other non-specific neural synchrony

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000058744

Enrollment

Registered

2025-10-01

Start date

2025-10-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Young healthy adults

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Healthy adults 2. A person who signed informed consent 3. Right-handed 4. Unacquainted dyads (Inclusion of Others in the Self Scale: IOSS < 4)

Exclusion criteria

Exclusion criteria: 1. History of neurological disorders 2. History of psychiatric disorders 3. History of head trauma or organic disease 4. History of psychotropic medication

Design outcomes

Primary

Measure	Time frame
Inter-Brain Synchrony value during cooperative tangram puzzles (Wavelet Transform Coherence value)	—

Secondary

Measure	Time frame
1. Synchronized value of emotion (Self-Assessment Manikin scale: Valence, Activation) 2. Synchronized value of eye movement (mutual gazing time, gazing rate) 3. Synchronized value of physical behavior (angular velocity of right elbow and wrist joint) 4. Synchronized value of autonomic responses (skin conductance level, skin conductance response, heart rate, heart rate variability) 5. Number of Tangram puzzle assignments completed	—

Measure

Time frame

1. Synchronized value of emotion (Self-Assessment Manikin scale: Valence, Activation) 2. Synchronized value of eye movement (mutual gazing time, gazing rate) 3. Synchronized value of physical behavior (angular velocity of right elbow and wrist joint) 4. Synchronized value of autonomic responses (skin conductance level, skin conductance response, heart rate, heart rate variability) 5. Number of Tangram puzzle assignments completed

—

Countries

Japan

Contacts

Public ContactDaisuke Sawamura

Faculty of Health Sciences, Hokkaido University Rehabilitation Science

D.sawamura@pop.med.hokudai.ac.jp0117063387

Outcome results