Emotional cues reduce Pavlovian interference in feedback-based go and nogo learning

Area of Science:

• Cognitive Neuroscience
• Behavioral Science
• Reinforcement Learning

Background:

• The Pavlovian bias describes an asymmetry in learning, where executing a response for reward and withholding for punishment is easier than vice versa.
• This bias arises from conflicts between cue-related Pavlovian and outcome-related instrumental action tendencies.
• Emotional facial expressions show similar motivational tendencies, like approach to smiles and withdrawal from frowns.

Purpose of the Study:

• To investigate how learning from emotional facial cues, rather than abstract stimuli, modulates the Pavlovian bias in reinforcement learning.
• To examine the role of emotional valence congruence between cues and instrumental responses.
• To explore the impact of arousal and cue-action congruency on goal-directed behavior.

Main Methods:

• An orthogonalized Go/Nogo task was employed, decoupling action (go/nogo) from outcome valence (win/avoid loss).
• 137 healthy adults participated, divided into groups exposed to congruent (CON), incongruent (INC), or neutral (NEU) emotional facial cues.
• Learning performance and the Pavlovian bias were assessed across conditions.

Main Results:

• The Pavlovian bias was reduced in both congruent and incongruent emotional cue conditions compared to neutral cues.
• Congruent emotional cues adaptively reduced the Pavlovian bias, improving learning in conflict conditions.
• Incongruent cues also reduced the bias, but this was driven by decreased performance in non-conflict conditions.

Conclusions:

• Emotional facial cues, particularly when congruent with the required response, can modulate the Pavlovian bias in reinforcement learning.
• Arousal/salience and cue-action congruency appear to play roles in Pavlovian-instrumental regulation and adaptive goal-directed behavior.
• Findings suggest potential clinical applications in understanding and treating disorders involving reinforcement learning and emotional regulation.