Inhibitory control training might be a gateway to enhance fear extinction

Area of Science:

• Psychology
• Neuroscience
• Cognitive Science

Background:

• Inhibitory learning is crucial for effective extinction learning.
• Deficits in inhibitory learning can impede the extinction of learned fears.
• Optimizing inhibitory learning shows promise for enhancing fear extinction.

Purpose of the Study:

• To investigate if inhibitory control training can improve fear extinction and extinction recall.
• To determine the impact of a stop-signal task on fear responses during extinction and recall.

Main Methods:

• A 3-day fear conditioning paradigm was used, including habituation, fear acquisition, extinction, and extinction recall.
• Participants were divided into an inhibitory control training and standard extinction group (IC-SE) and a standard extinction group (SE).
• The IC-SE group received stop-signal task training before standard extinction on day 2.

Main Results:

• Inhibitory control training significantly reduced unconditioned stimulus (UCS)-expectancy and subjective arousal during extinction.
• These reductions in fear responses were maintained 24 hours later during extinction recall.
• The stop-signal task appears to enhance extinction through improved inhibitory control.

Conclusions:

• Inhibitory control training, specifically using the stop-signal task, effectively enhances fear extinction and recall.
• This training method may aid extinction by facilitating retrieval suppression.
• Findings suggest potential therapeutic applications for inhibitory control training in fear-related disorders.