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September 5, 2026Social Cognitive and Affective NeuroscienceOpen Access

Selective attenuation of neural responses to own infant's face in early motherhood: A longitudinal MEG study

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Authors

EVElisa VuoriainenPAPiia AstikainenXLXueqiao Li

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Overview

Longitudinal MEG study reveals diminishing attention-related brain responses to own-infant faces in first-time mothers, indicating that caregiving experience reshapes maternal neural reactivity.

Key Points

  • To determine how maternal neural responses to an infant's face evolve over time from infancy into early toddlerhood.
  • Longitudinal magnetoencephalography (MEG) recorded neural activity in 16 first-time mothers across two timepoints spanning infancy and early toddlerhood.
  • Mothers viewed photographs of their own infant, an unfamiliar infant, and an unfamiliar adult during imaging.
  • Depth-weighted minimum-norm estimates measured early orbitofrontal cortex activity (~140 ms), structural face encoding (M170, ~170 ms), and motivated attention via the late positive potential (LPP, ~300–600 ms).
  • Early LPP responses in the fusiform cortex and late LPP responses in fusiform and occipital regions were significantly higher for own-infant faces at session 1 but attenuated to the level of other faces by session 2.
  • Early orbitofrontal activity and M170 face-encoding responses showed no modulation by face familiarity or session, with M170 responses demonstrating high temporal stability across both timepoints.

Cite This Study

Vuoriainen et al. (2026) studied this question.

synapsesocial.com/papers/6a9bd3726b95aff0620eac0fhttps://doi.org/10.1093/scan/nsag073
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