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Touch Helps Mom and Baby's Brains Synchronize
News

Touch Helps Mom and Baby's Brains Synchronize

Touch Helps Mom and Baby's Brains Synchronize
News

Touch Helps Mom and Baby's Brains Synchronize

Study examines the role of touch and proximity on the mutual adaptation of brain activity and heart rhythms in mothers and babies. Credit: © Trinh Nguyen
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Study examines the role of touch and proximity on the mutual adaptation of brain activity and heart rhythms in mothers and babies

Affectionate touch and bodily contact create social connections and can reduce stress. In romantic couples, this positive effect has been linked to a mutual alignment of brain activity and heart rhythms.  Since touch is a fundamental mode of communication between caregiver and infant, Trinh Nguyen, Stefanie Höhl and colleagues from the US asked whether proximity and touch also contribute to the attunement of brain and heart rhythms between mother and baby.In the new study, four to six-month-old babies played and watched videos together with their mothers. Functional near-infrared spectroscopy (fNIRS) was used to measure brain activity while electrocardiography (ECG) was used to simultaneously assess the heart rhythms of mother and baby. With fNIRS, changes in oxygen saturation are recorded in the outermost layer of the brain - here in particular in the frontal brain. Activation in this region is associated with mutual emotional attunement, attentiveness and self-regulation. These processes are particularly relevant for social interactions and develop during the first years.

The results showed that mother-baby pairs mutually adjusted their brain activity, especially when they touched each other. Mutual neural adjustment occurred when the mother held the baby close to her body and both watched a video together, and when they played together face-to-face and the mother lovingly touched the baby, e.g., by kissing, stroking and gentle massage. The new study demonstrates that touch plays a fundamental role in the early adaptation of brain activity between mothers and infants. An adaptation of heart rhythms was also shown when mother and baby played together, but it was independent of touch. In the case of the heartbeat, a mutual adaptation was particularly evident when babies signalled discomfort, which was presumably transmitted to the mothers.

In future studies, Trinh Nguyen and Stefanie Höhl want to investigate how the mutual attunement in brain activity and heart rhythms affects child development in the long term. In particular, the later relationship between mother and child, as well as children’s language development, will be investigated in follow-up studies.

Reference:

Nguyen T, Abney DH, Salamander D, Bertenthal BI, Hoehl S. Proximity and touch are associated with neural but not physiological synchrony in naturalistic mother-infant interactions. Neuroimage. 2021;244:118599. doi:10.1016/j.neuroimage.2021.118599

This article has been republished from the following materials. Note: material may have been edited for length and content. For further information, please contact the cited source.

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