Multifractality of posture modulates multisensory perception of stand-on-ability

Area of Science:

• Multisensory perception
• Embodied cognition
• Biomechanics

Background:

• Perception is a dynamic, multisensory process integrating sensory and motor activities.
• The body's structure and movement patterns are crucial for understanding environmental interactions.
• Affordances, or the actionable properties of the environment, are perceived through a combination of sensory input and motor output.

Purpose of the Study:

• To investigate how the body's tensegrity structure and movement multifractality influence the perception of affordances.
• To explore the integration of perception and action in functional apprehension of surroundings.
• To examine the relationship between postural sway complexity and perception-action coupling.

Main Methods:

• Experimental paradigm using the affordance of stand-on-ability of ground surfaces.
• Participants matched visual surface angles haptically and haptic surface angles visually.
• Analysis of multifractality in postural sway and its interaction with energy arrays and task demands.

Main Results:

• Demonstrated complex intertwining of perception and action.
• Showcased how multifractality of postural sway interacts with multiple energy arrays, responses, and geometric task demands.
• Provided insight into how bodily movement informs the perception of affordances.

Conclusions:

• The tensegrity structure and multifractality of bodily movements are key to perceiving affordances.
• Perception and action are inextricably linked, guiding competent interaction with the environment.
• Understanding perception-action coupling is essential for explaining functional behavior.