Table 1 Summary of the behavioral characteristics of the adult-and infant-like fear and extinction systems, along with the effect of stress on the characteristics of the infant system
From: Early experiences and the development of emotional learning systems in rats
Juvenile and adult | Infant | Maternally-separated infant | |
|---|---|---|---|
Renewal | ✓ | x | ✓ |
Reinstatement | ✓ | x | ✓ |
GABA involvement in extinction | ✓ | x | ✓ |
Infantile amnesia | x | ✓ | x |