Emotional context modulates response inhibition: neural and behavioral data

Area of Science:

• Neuroscience
• Cognitive Psychology
• Affective Science

Background:

• Emotion and response inhibition are known to be interrelated neural processes.
• The precise temporo-spatial characteristics of their interaction remain unclear.

Purpose of the Study:

• To investigate the interplay between emotional context and response inhibition.
• To explore how different emotional valences affect the neural mechanisms of inhibiting prepotent responses.

Main Methods:

• Thirty participants performed a modified Go/Nogo task under negative, neutral, and positive emotional contexts.
• Event-related potentials (ERPs) and source localization (sLORETA) were used to analyze neural activity.
• Temporal and spatial principal component analyses quantified Nogo-N2 and Nogo-P3 components.

Main Results:

• Reaction times to Go cues were faster in positive contexts.
• Suppressing responses to Nogo cues in positive contexts showed larger Nogo-P3 amplitudes and increased anterior cingulate cortex (ACC) activation compared to negative contexts.
• Nogo-P3 amplitude correlated inversely with reaction times and positively with positive contextual valence.

Conclusions:

• Positively valenced contexts increase the difficulty of withholding prepotent responses, demanding greater inhibitory control.
• The findings highlight the significant influence of emotional valence on the cognitive process of response inhibition.