Assimilation and contrast: the two sides of specific interference between action and perception

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human Motor Control

Background:

• Historically, perception and action were viewed as separate, sequential processes.
• Emerging evidence indicates shared neural and cognitive mechanisms underlying both perception and action.
• Understanding the interplay is crucial for fields like robotics, rehabilitation, and human-computer interaction.

Purpose of the Study:

• To review and synthesize evidence for content-based perception-action interactions.
• To examine how factors like influence direction, timing, and movement type modulate these interactions.
• To propose a classification schema for perception-action effects, explaining contrast and assimilation.

Main Methods:

• Literature review and theoretical analysis of existing perception-action research.
• Categorization of studies based on key interaction parameters (direction, temporal type, functional relation, movement type).
• Discussion of prominent models of the perception-action interface.

Main Results:

• Specific perception-action interactions provide support for integrated models.
• Analysis reveals distinct patterns of influence depending on the interaction's characteristics.
• A framework is proposed to predict contrast (opposite effects) versus assimilation (similar effects).

Conclusions:

• Perception and action are deeply intertwined, not independent processes.
• The proposed schema helps elucidate the conditions under which perception-action interactions lead to contrast or assimilation.
• This integrated view advances our understanding of sensorimotor control and cognitive architecture.