“…Under this framework, seeing engaging human faces, hearing self-relevant voices, and pro-social touch would activate infants' reward network, resulting in increased attention to socially relevant stimuli. In support of this hypothesis, infant STS responds to social perception in the auditory [79,91,109,110], visual [74,76,90,91], and tactile [111] domains while MPFC is part of the reward network [112][113][114][115] and responds to socially self-relevant environmental cues in infants [79,81,82,[106][107][108]. In infants, affective touch enhances infants' attention to faces [116] and increases functional coupling between STS and MPFC [117], while auditory language modulates activity in STS and MPFC [110,118].…”