Quiet Eye and Motor Performance: The Longer the Better?

Area of Science:

• Motor control and learning
• Cognitive neuroscience
• Human performance

Background:

• The quiet-eye (QE) phenomenon, characterized by fixation on a task-relevant target before movement initiation, is known to predict motor performance.
• Previous research has primarily focused on shorter QE durations, leaving the effects of extended QE on motor outcomes largely unexplored.

Purpose of the Study:

• To investigate the impact of experimentally induced extended quiet-eye (QE) durations on ball-throwing performance.
• To determine if there is an optimal QE duration for enhanced motor skill execution.

Main Methods:

• Two ball-throwing studies were conducted, experimentally inducing QE durations ranging from 400 to 3,200 milliseconds.
• Performance metrics were analyzed across different QE duration conditions to identify performance changes.

Main Results:

• Inferior ball-throwing performance was observed in conditions with short QE durations.
• No significant performance difference was found between the longer QE duration conditions (beyond 2,000 ms).
• Extrapolation suggested potential performance gains up to 2,000 ms QE duration, with an optimal interval around 3,000 ms.

Conclusions:

• The findings suggest that extended QE durations beyond a certain point do not enhance, and may even slightly impair, motor performance.
• An inhibition explanation for the QE phenomenon is proposed, where initial gains are attributed to shielding movement plans, and later losses to balancing shielding and environmental monitoring.