scholarly journals What Is capacity? Grounding cognitive concepts in neural dynamics with a dynamic neural field model of visual working memory

2010 ◽  
Vol 9 (8) ◽  
pp. 575-575
Author(s):  
J. Spencer ◽  
J. Johnson ◽  
V. Simmering
Keyword(s):  
Working Memory ◽  
Visual Working Memory ◽  
Field Model ◽  
Neural Field ◽  
Neural Dynamics ◽  
Neural Field Model ◽  
Dynamic Neural Field Model

scholarly journals Aftereffects of Saccades Explored in a Dynamic Neural Field Model of the Superior Colliculus

2011 ◽  
Vol 4 (2) ◽  
Author(s):  
Zhiguo Wang ◽  
Jason Satel ◽  
Thomas P. Trappenberg ◽  
Raymond M. Klein
Keyword(s):  
Superior Colliculus ◽  
Inhibition Of Return ◽  
Field Model ◽  
Neural Field ◽  
Internal Dynamics ◽  
Future Studies ◽  
Neural Field Model ◽  
Fixation Location ◽  
Dynamic Neural Field Model

When viewing a scene or searching for a target, an observer usually makes a series of saccades that quickly shift the orientation of the eyes. The present study explored how one saccade affects subsequent saccades within a dynamic neural field model of the superior colliculus (SC). The SC contains an oculocentric motor map that encodes the vector of saccades and remaps to the new fixation location after each saccade. Our simulations demonstrated that the observation that saccades which reverse their vectors are slower to initiate than those which repeat vectors can be explained by the afore-mentioned remapping process and the internal dynamics of the SC. How this finding connects to the study of inhibition of return is discussed and suggestions for future studies are presented.

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