Which brain region is most consistently linked to retrieval of extinction memory in fear extinction?

Which brain region is most consistently linked to retrieval of extinction memory in fear extinction?

• A. Prefrontal cortex
• B. Amygdala
• C. Hippocampus
• D. vmPFC

Answer: (D)

Retrieval of extinction memory relies on a region that can exert top-down control to dampen fear responses. When extinction learning creates a memory that the conditioned stimulus is safe, the ventromedial prefrontal cortex helps retrieve that safety memory and suppress the amygdala’s fear response during later encounters with the stimulus. This inhibitory pathway lets the individual recall that the CS no longer predicts danger, reducing emotional arousal. Imaging and lesion studies consistently point to this ventromedial prefrontal area as the key player in extinction recall, whereas the amygdala is more about generating fear and the hippocampus mainly supplies context for when extinction memories apply. The broader prefrontal cortex contributes to regulation, but the strongest and most consistent link to retrieving extinction memory is the ventromedial prefrontal cortex, which enables the memory of safety to guide behavior.

Retrieval of extinction memory relies on a region that can exert top-down control to dampen fear responses. When extinction learning creates a memory that the conditioned stimulus is safe, the ventromedial prefrontal cortex helps retrieve that safety memory and suppress the amygdala’s fear response during later encounters with the stimulus. This inhibitory pathway lets the individual recall that the CS no longer predicts danger, reducing emotional arousal. Imaging and lesion studies consistently point to this ventromedial prefrontal area as the key player in extinction recall, whereas the amygdala is more about generating fear and the hippocampus mainly supplies context for when extinction memories apply. The broader prefrontal cortex contributes to regulation, but the strongest and most consistent link to retrieving extinction memory is the ventromedial prefrontal cortex, which enables the memory of safety to guide behavior.