Neurodevelopmental timing and socio-cognitive development in a prosocial cooperatively breeding primate (Callithrix
Paola Cerrito1,2, Eduardo Gascon3, Angela C Roberts4
1Department of Evolutionary Anthropology, University of Zurich, Zürich, Switzerland.
Science Advances
|October 30, 2024
Summary
Cooperative breeding in marmosets shapes brain development, with social brain areas maturing over extended periods. This timing aligns with behavioral milestones, offering insights into human social cognition evolution.
Area of Science:
- Neuroscience
- Developmental Biology
- Primatology
Background:
- Primate brain development is influenced by critical period inputs.
- Cooperative breeders, unlike independent breeders, involve infants interacting with multiple caregivers.
Purpose of the Study:
- To map the neurodevelopmental timing of the cooperatively breeding common marmoset onto behavioral milestones.
- To understand how social interactions shape brain development in cooperative breeders.
Main Methods:
- Combined behavioral observations, neuroimaging (anatomical and functional), and neural tracing experiments.
- Investigated structure-function relationships in marmoset brain development.
Main Results:
- Key brain areas for observing conspecifics develop in clusters with prolonged trajectories.
- These areas differentiate during infant-caregiver negotiation periods.
- Connectivity of these social brain regions is not stronger than with other brain areas.
Conclusions:
- The developmental timing of marmoset social brain areas correlates with social and behavioral milestones.
- Social brain development extends into adulthood, similar to humans.
- Findings suggest cooperative breeding is crucial for socio-cognitive skills and has implications for human social cognition evolution.
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