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Related Experiment Video

Updated: Jun 30, 2026

Testing Tactile Masking between the Forearms

Testing Tactile Masking between the Forearms

Published on: February 10, 2016

Object substitution masking: when does mask preview work?

Stephen Wee Hun Lim¹, Fook K Chua

¹Department of Psychology, National University of Singapore, Singapore. psylwhs@nus.edu.sg

Journal of Experimental Psychology. Human Perception and Performance

|October 1, 2008

Summary

This summary is machine-generated.

Masking effects on target identification are reduced by previewing the mask. However, mask configuration and apparent motion influence whether this preview effect is effective in attenuating object substitution masking (OSM).

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Area of Science:

Cognitive psychology
Visual perception
Neuroscience

Background:

Object substitution masking (OSM) impairs target identification when a mask persists after target disappearance.
Mask previewing can attenuate OSM, but the conditions influencing its effectiveness are not fully understood.

Purpose of the Study:

To investigate the conditions under which mask previewing effectively attenuates object substitution masking (OSM).
To examine the roles of interstimulus interval (ISI), preview duration, and mask configuration in the preview effect.

Main Methods:

Experiment 1 manipulated the ISI between previewed mask offset and target presentation.
Experiment 2 manipulated mask configurations at preview and target presentation, and the ISI to induce apparent motion.

Main Results:

The basic preview effect was replicated; ISI and preview duration did not affect target identification.
Mask configuration matching at preview and target presentation replicated the preview effect.
Mask configuration mismatch reduced the preview effect, unless apparent motion was induced by removing the ISI, which restored the preview effect.

Conclusions:

Mask preview effectiveness in attenuating OSM is contingent on specific conditions, including mask configuration and apparent motion.
Object representation models can explain the observed interactions between mask preview, configuration, and motion in visual masking.