Your own action influences how you perceive another person's action

Area of Science:

• Cognitive Neuroscience
• Motor Control
• Action Perception

Background:

• Neuroimaging and neurophysiology studies show motor system involvement in action observation.
• The precise functional role of this motor system engagement remains unclear.
• One hypothesis posits that the motor system decodes observed actions.

Purpose of the Study:

• To investigate the functional significance of motor system involvement in action observation.
• To test the hypothesis that concurrent action performance influences the perception of observed actions.
• To explore the interaction between motor execution and action perception.

Main Methods:

• Subjects judged the weight of an observed lifted box.
• Concurrent tasks involved subjects actively lifting or passively holding light or heavy boxes.
• Perceptual judgments of observed action were compared across different concurrent motor conditions.

Main Results:

• Active lifting of a concurrent box significantly altered perceptual judgments of the observed box's weight.
• An observed box was perceived as heavier when subjects lifted a light box.
• An observed box was perceived as lighter when subjects lifted a heavy box.

Conclusions:

• The findings challenge previous assumptions about facilitating effects between movement and perception.
• Results suggest a complex interplay within overlapping neural systems for motor control and action understanding.
• The study proposes that processing multiple action models may explain the observed inverse relationship between performed and perceived actions.