Action plan interrupted: resolution of proactive interference while coordinating execution of multiple action plans...

Area of Science:

• Cognitive Neuroscience
• Sleep Research

Background:

• Goal-directed behavior requires managing multiple action plans.
• Partial repetition costs (PRCs) arise from proactive interference when action plans overlap.
• Executive control processes are thought to resolve PRCs.

Purpose of the Study:

• To investigate the impact of one night of sleep deprivation on inhibitory control processes underlying PRCs.
• To determine if sleep deprivation compromises the ability to resolve proactive interference during action planning.

Main Methods:

• Participants performed an action planning task at baseline and after sleep deprivation or a full night's sleep.
• The task involved retaining one action plan while responding to an interrupting event with overlapping or non-overlapping plans.
• Groups were randomized into sleep-deprived and well-rested control conditions.

Main Results:

• Sleep deprivation significantly slowed responses to the interrupting event compared to baseline and controls.
• The magnitude of partial repetition costs (PRCs) did not differ between sleep-deprived and control conditions.
• Global response times were impaired by sleep deprivation, but not the specific inhibitory processes measured by PRCs.

Conclusions:

• One night of sleep deprivation impairs global task performance, specifically slowing responses to interruptions.
• Inhibitory control mechanisms involved in resolving proactive interference (PRCs) are resilient to one night of sleep deprivation.
• Findings suggest that while general cognitive functions degrade with sleep loss, specific executive control components may remain intact.