Related Experiment Video
Updated: Jun 22, 2026
08:45
A Dual Task Procedure Combined with Rapid Serial Visual Presentation to Test Attentional Blink for Nontargets
Published on: December 5, 2014
Searching for targets within the spatial layout of visual short-term memory
Bo-Cheng Kuo1, Anling Rao, Jöran Lepsien
1Department of Experimental Psychology, University of Oxford, Oxford, OX1 3UD, United Kingdom.
Summary
Visual short-term memory (VSTM) representations are flexible and attentionally controlled. Searching for targets in VSTM uses similar neural mechanisms as searching in perceptual arrays, indicated by event-related potentials.
Area of Science:
- Cognitive Neuroscience
- Visual Perception
- Memory Research
Background:
- Internal representations guide behavior and are flexible.
- Selective attention modulates these representations based on goals.
- Neural mechanisms of attention in perception and memory are compared.
Purpose of the Study:
- To compare neural mechanisms of selective attention in visual short-term memory (VSTM) versus perceptual search.
- To investigate if VSTM search involves spatially specific neural biasing.
- To determine if VSTM search mechanisms mirror those in visual perception.
Main Methods:
- Two experiments were conducted.
- Event-related potentials (ERPs) were used to measure neural activity.
- The N2pc component was analyzed during perceptual and VSTM search tasks.
Main Results:
- N2pc potentials were observed during perceptual visual search.
- Equivalent N2pc potentials were elicited when searching within VSTM representations.
- These N2pcs showed similar timing and scalp distribution across conditions.
Conclusions:
- VSTM representations are highly flexible and modulated by task goals.
- Neural mechanisms for target selection show significant overlap between perceptual and VSTM domains.
- Spatially specific attention mechanisms operate similarly across perception and VSTM.
