The Interbrain refers to direct, largely non-verbal communication between brains through cues such as eye gaze, facial expression, posture, and tone, forming a foundation for co-regulation.
The Interbrain describes the direct, largely non-verbal communication through which one brain-body system continually influences another. Eye gaze, facial expression, voice, posture, movement, touch, rhythm, and other relational cues can signal safety or threat and alter arousal without conscious thought. This process begins in infancy, when regulation is fundamentally dependent on the caregiver-child relationship, but it continues throughout life. The Interbrain challenges the idea that self-regulation develops or operates entirely within an isolated individual. In Self-Reg, regulation is profoundly relational. Our nervous systems are continually reading and responding to one another, which is why the state we bring into a relationship can change what becomes possible within it.
Our nervous systems are always communicating, often before words enter the picture.
