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Updated: May 9, 2026

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Profiling Maternal Behavior Responses During Whole-Brain Imaging
Published on: January 24, 2025
Associations Between New Mothers' Neural Reward Response and Perceptions of Their Own Infant
Kaylin E Hill1, Julia Garon-Bissonnette2, McKenzie N Greene1
1Department of Psychology, University of Notre Dame, Notre Dame, Indiana, USA.
Developmental Psychobiology
|May 8, 2026
Summary
Mothers' neural reward responsiveness, measured by the reward positivity (RewP) brain signal, is linked to their positive perceptions of their infant. This finding highlights the connection between maternal motivation and infant perception.
Area of Science:
- Neuroscience
- Developmental Psychology
- Social Neuroscience
Background:
- Reward responsiveness is crucial for social motivation and caregiver-infant interactions.
- The reward positivity (RewP) is a neural marker of reward responsiveness, measurable via electroencephalogram (EEG).
Purpose of the Study:
- To investigate the relationship between mothers' neural reward responsiveness and their perceptions of their infant in the early postpartum period.
- To examine RewP in response to both social and monetary rewards.
Main Methods:
- Ninety-one mothers underwent continuous EEG recording during monetary and social incentive delay tasks.
- Mothers provided personality descriptors for their infants.
- The RewP was analyzed in response to winning a social reward (viewing infant photo) and monetary reward.
Main Results:
- Both social and monetary RewP showed significant positive associations with mothers' positive infant perceptions.
- Mothers' neural motivational systems correlate with how they view their child.
Conclusions:
- Maternal neural reward processing is associated with infant perception, impacting caregiver functioning.
- Understanding this link is vital for the caregiver-child relationship and child development.
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