Stop affordance task: a measure of the motor interference effect

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human-Computer Interaction

Background:

• Affordances, or object properties indicating potential use, can trigger automatic motor responses.
• These automatic responses may interfere with intended actions, potentially influencing motor inhibition.
• Research on how affordances affect voluntary response inhibition is limited.

Purpose of the Study:

• To investigate the impact of object affordances on voluntary action inhibition.
• To determine if affordance-induced interference enhances or hinders response inhibition.

Main Methods:

• A stop-signal task was employed, using images of mugs as stop signals.
• The orientation of the mug handle (towards or away from the responding hand) was manipulated.
• Response inhibition time was measured under different affordance conditions.

Main Results:

• Response inhibition was faster when the mug handle pointed towards the responding hand.
• This suggests that affordance-elicited motor representations interact with pre-activated motor representations.
• A mismatch between affordance and target-evoked motor representations enhanced inhibition.

Conclusions:

• Object affordances can modulate voluntary motor inhibition.
• Affordance-induced interference can facilitate behavioral inhibition.
• This finding highlights a specific mechanism for enhanced action control through environmental cues.