Functional connectivity in the social perception pathway at birth is linked with attention to faces at 4 months.

Résumé

BACKGROUND: Processing faces and speech is supported by the right-lateralized social visual perception pathway (social pathway) involving medial temporal/visual 5 area (MT/V5) and superior temporal sulcus (STS). Little is known about development of the social pathway and its links with later social outcomes. We examined intrinsic functional connectivity (iFC) in the right social pathway in neurotypical neonates, compared it with iFC in the left social and bilateral dorsal attention pathways, and interrogated prospective links between iFC and social attention in neurodiverse neonates.METHODS: iFC in the social and dorsal pathways was measured in 517 full-term neonates from the developing Human Connectome Project (dHCP) and 73 full-term Yale neonates [M =41.5 weeks (SD=1.9)]. Social attention was assessed in 36 Yale neonates at M =4.2 months (SD=0.4) months.RESULTS: In the dHCP sample, the iFC indices were positive in all the pathways (all p-values < 0.001) and did not vary by sex [all p>0.275], but the iFC in the right-lateralized social pathway was higher than in the remaining pathways [all p