The Effect of Aging on Visual Working Memory During Change Detection: Behavioral Performance and Dynamic Neural Field Model Results

2014 ◽  
Author(s):  
Matthew Costello ◽  
Aaron Buss ◽  
Sarah Ratkiewicz ◽  
Krista Ream
Keyword(s):  
Working Memory ◽  
Change Detection ◽  
Visual Working Memory ◽  
Field Model ◽  
Neural Field ◽  
Behavioral Performance ◽  
Neural Field Model ◽  
Dynamic Neural Field Model

scholarly journals A Dynamic Neural Field Model of Visual Working Memory and Change Detection

2009 ◽  
Vol 20 (5) ◽  
pp. 568-577 ◽  
Author(s):  
Jeffrey S. Johnson ◽  
John P. Spencer ◽  
Steven J. Luck ◽  
Gregor Schöner
Keyword(s):  
Working Memory ◽  
Change Detection ◽  
Visual Working Memory ◽  
The Novel ◽  
Visually Guided ◽  
Neural Field Model ◽  
Underlying Mechanisms ◽  
Considerable Body ◽  
Dynamic Neural Field Model ◽  
Shed Light

Efficient visually guided behavior depends on the ability to form, retain, and compare visual representations for objects that may be separated in space and time. This ability relies on a short-term form of memory known as visual working memory. Although a considerable body of research has begun to shed light on the neurocognitive systems subserving this form of memory, few theories have addressed these processes in an integrated, neurally plausible framework. We describe a layered neural architecture that implements encoding and maintenance, and links these processes to a plausible comparison process. In addition, the model makes the novel prediction that change detection will be enhanced when metrically similar features are remembered. Results from experiments probing memory for color and for orientation were consistent with this novel prediction. These findings place strong constraints on models addressing the nature of visual working memory and its underlying mechanisms.

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