Related Experiment Video
Updated: Oct 19, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
Published on: December 3, 2013
Wide-angle memories of close-up scenes: a demonstration of boundary extension
1Department of Psychology, University of Delaware, Newark 19716, USA. cygottesman@ou.edu
Abstract:
Boundary extension refers to a tendency to remember seeing a greater expanse of a scene than was shown in a photograph. It is hypothesized that the view shown in the stimulus activates expectations about the scene's layout just outside the picture's borders. Following presentation, the viewer remembers having seen this expected information, and this yields boundary extension. We provide photographs and instructions for conducting two brief demonstrations of the phenomenon and provide materials for a related class experiment on the journal's World-Wide Web site. These demonstrations of boundary extension provide graphic illustrations of the role of schematic expectancies in the representation of scenes and help to illustrate the role of real-world knowledge in cognition.
Related Concept Videos
Boundary Conditions: Lossless Lines
At the receiving end, the boundary condition states that the voltage equals the product of the receiving-end impedance and current. This relationship is expressed as a function of the incident and...
Depth Perception and Spatial Vision
Framing Effects
Phase Contrast and Differential Interference Contrast Microscopy
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
Taping Over Different Ground Profiles
Imaging Biological Samples with Optical Microscopy
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...

