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Oxytocin in the anterior cingulate cortex is involved in helping behaviour
Atsuhito Yamagishi1, Joungmin Lee1, Nobuya Sato1
1Department of Psychological Sciences, Kwansei Gakuin University, 1-1-155, Uegahara, Nishinomiya, Hyogo, 662-8501, Japan.
Behavioural Brain Research
|July 1, 2020
Summary
Oxytocin in the anterior cingulate cortex is crucial for learning helping behaviors in rats. Blocking oxytocin receptors delayed this learning, suggesting its role in prosocial actions.
Area of Science:
- Neuroscience
- Behavioral Science
- Social Cognition
Background:
- Empathy drives helping behavior to alleviate others' distress.
- Oxytocin, a neuropeptide, influences social cognition, empathy, and prosocial actions.
- The anterior cingulate cortex (ACC) is vital for empathy and expresses oxytocin receptors, but its role in helping behavior is unclear.
Purpose of the Study:
- To investigate the role of oxytocin within the anterior cingulate cortex (ACC) in rats' helping behavior.
- To determine if oxytocin signaling in the ACC is necessary for the acquisition of helping behavior.
Main Methods:
- Experiment 1: Administered oxytocin receptor blockers in the ACC of rats and assessed effects on learning helping behavior.
- Experiment 2: Used immunofluorescence to examine colocalization of oxytocin receptors and c-fos (a marker of neural activation) in the ACC, anterior insular cortex, and amygdala in rats that learned helping behavior.
Main Results:
- Blocking oxytocin receptors in the ACC significantly delayed the learning of helping behavior in rats.
- Increased c-fos expression was observed in oxytocin receptor-containing neurons in the ACC and amygdala of rats that acquired helping behavior.
- Neural activation changes, particularly in the cingulate-amygdala pathway, were noted in the late phase of learning.
Conclusions:
- Oxytocin signaling in the anterior cingulate cortex is essential for the acquisition of helping behavior.
- The cingulate-amygdala pathways, modulated by oxytocin, appear critical for mediating helping behavior.
- These findings highlight the neurobiological underpinnings of prosocial actions mediated by oxytocin.
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