Setting the scene for boundary extension: Methods, findings, connections, and theories

Area of Science:

• Cognitive Psychology
• Visual Perception
• Neuroscience

Background:

• Humans often misremember visual scenes, incorporating elements beyond the actual view.
• This phenomenon, known as boundary extension, influences scene representation and memory recall.

Purpose of the Study:

• To comprehensively review methodologies and empirical findings on boundary extension.
• To explore factors influencing boundary extension and its connections to other cognitive processes.
• To discuss theoretical frameworks explaining boundary extension.

Main Methods:

• Review of existing literature on boundary extension studies.
• Analysis of methodologies including stimulus presentation and response measures.
• Examination of empirical findings across various stimulus, display, and observer characteristics.

Main Results:

• Boundary extension is influenced by scene content, display parameters, and observer attributes.
• Factors like object cropping, aperture size, and attention significantly affect the extent of boundary extension.
• Connections to phenomena such as illusions, Gestalt principles, and mental imagery are established.

Conclusions:

• Boundary extension is a robust perceptual and memory phenomenon.
• Understanding boundary extension offers insights into visual scene representation and cognitive processing.
• Further research into theoretical models like the multisource model and 4E cognition is warranted.