Does the Simon Effect Interfere with the Synergy Between Perception and Action?

Area of Science:

• Cognitive psychology
• Neuroscience
• Motor control

Background:

• Precision-demanding tasks require optimal perception-action coupling.
• The Quiet Eye (QE) period, the final fixation before movement, correlates with motor performance.

Purpose of the Study:

• Investigate mechanisms underlying the Quiet Eye (QE).
• Examine the impact of cognitive interference on QE and motor performance using the Simon paradigm.

Main Methods:

• Participants performed precision ball-throwing tasks under different conditions (hand vs. target).
• Monaural auditory stimuli with compatible or incompatible stimulus-effect mappings were used to induce cognitive interference.
• Reaction times and fixation patterns, including QE onset and duration, were analyzed.

Main Results:

• Incompatible trials led to slower reactions and later target fixations, confirming the Simon effect.
• In the hands condition, incompatible trials showed earlier QE onsets and longer QE durations compared to compatible trials.
• These findings suggest cognitive interference is managed to maintain motor performance.

Conclusions:

• Results support attentional explanations for QE.
• Findings indicate optimized attentional control and efficient resource management or response inhibition contribute to QE.
• QE mechanisms may involve inhibiting alternative response strategies to preserve performance accuracy.