Mind Wandering Impedes Response Inhibition by Affecting the Triggering of the Inhibitory Process

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human Factors

Background:

• Mind wandering is defined as a shift in mental focus to task-unrelated thoughts.
• Previous research indicates mind wandering negatively impacts concurrent task performance.
• The effect of mind wandering on executive functions, particularly inhibitory control, remains understudied.

Purpose of the Study:

• To investigate how mind wandering affects the ability to subsequently stop an incipient motor response.
• To determine which component of the stopping process is affected by mind wandering: brake triggering or brake implementation.

Main Methods:

• The study involved healthy adult participants.
• Participants were tested on their ability to stop a motor response under conditions of mind wandering.
• Analysis focused on stopping latency and the success rate of triggering the inhibitory brake.

Main Results:

• Mind wandering led to increased stopping latency.
• A higher percentage of trials with failed brake triggering was observed during mind wandering.
• Increased trigger failures accounted for 67% of the variance in stopping latency increases.

Conclusions:

• Mind wandering significantly impairs the ability to stop ongoing motor responses.
• The primary mechanism by which mind wandering affects stopping is through impaired triggering of the inhibitory brake.
• These findings have implications for understanding executive function deficits in real-world scenarios requiring rapid inhibition.