Sustained facial gazing mediates the most intense form of interpersonal communication… Researchers have found that extremely long gazing periods on the part of the mother towards her infant are a common occurrence and that the infant’s gaze reliably evokes mother’s gaze.
Schore establishes prolonged mutual gazing between mother and infant as the neurobiological substrate of the most intense interpersonal communication, making the stare the foundation of early self-development.
, Affect Regulation and the Origin of the Self: The Neurobiology of Emotional Development, 1994thesis