Perceptual and behavioral adjustments after action inhibition

Area of Science:

• Cognitive Neuroscience
• Motor Control
• Perception

Background:

• Inhibiting a planned motor action often leads to a more cautious mode prioritizing accuracy over speed.
• The relationship between motor inhibition and concurrent changes in visual perception remains underexplored.

Purpose of the Study:

• To investigate whether the inhibition of a motor action influences visual perception.
• To determine if action inhibition alters the estimation of distances relevant to the executed action.

Main Methods:

• Participants performed goal-directed hand movements towards a target.
• On some trials, participants had to interrupt their movement before reaching the target.
• Participants judged the start-target distance after both interrupted and unrestricted movements.

Main Results:

• Estimates of the start-target distance were significantly smaller following interrupted movements compared to unrestricted movements.
• Movement amplitudes in subsequent trials were reduced after movements that had been interrupted.
• These findings support action-specific accounts of perception.

Conclusions:

• Action inhibition induces changes in visual perception, specifically affecting distance estimation.
• Altered perceptual judgments following action inhibition may guide subsequent action planning.
• This highlights a dynamic interplay between motor control and perceptual systems.