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Related Experiment Video

Updated: Jul 8, 2026

Eye Movement Monitoring of Memory

Eye Movement Monitoring of Memory

Published on: August 15, 2010

Attenuated boundary extension in observer perspective memory compared to field perspective memory.

Shao-Chi Chiu^1,2, Ying-Tung Lin^1,3, Christopher Jude McCarroll^1,4

¹Institute of Philosophy of Mind and Cognition, National Yang Ming Chiao Tung University, Taipei, Taiwan.

Journal of Vision

|July 7, 2026

Summary

Boundary extension (BE), a false memory phenomenon, was studied across observer perspective memory (OPM) and field perspective memory (FPM). BE was less in OPM than FPM, and reduced by cognitive load and distance.

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Area of Science:

Cognitive Psychology
Visual Perception
Memory Studies

Background:

Boundary extension (BE) is a known false memory phenomenon where individuals recall seeing beyond presented scene limits.
Understanding BE's mechanisms across different memory perspectives is crucial for cognitive science.

Purpose of the Study:

To investigate the extent of boundary extension (BE) in observer perspective memory (OPM) versus field perspective memory (FPM).
To examine how cognitive demands and viewing distances influence BE in different mnemonic perspectives.

Main Methods:

Participants recalled scenes from either an observer perspective (OPM) or field perspective (FPM).
Cognitive demands and viewing distances were manipulated to assess their impact on BE.
Quantitative analysis of recalled scene boundaries was performed.

Main Results:

Boundary extension (BE) was observed in both OPM and FPM, but was significantly less pronounced in OPM compared to FPM.
Increased cognitive demands and greater viewing distances led to a reduction in the degree of BE.
A notable divergence in spatial boundary representations was identified between OPM and FPM.

Conclusions:

Boundary extension is influenced by both mnemonic perspective (OPM vs. FPM) and contextual factors like cognitive load and viewing distance.
The findings suggest distinct memory representations for spatial boundaries depending on the perspective from which a scene is recalled.
This research contributes to a deeper understanding of false memory formation and spatial cognition.