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The Brain's Router: A Cortical Network Model of Serial Processing in the Primate Brain
 

Summary: The Brain's Router: A Cortical Network Model of Serial
Processing in the Primate Brain
Ariel Zylberberg1,2
*, Diego FernaŽndez Slezak3
, Pieter R. Roelfsema4,5
, Stanislas Dehaene6,7
, Mariano
Sigman1
1 Laboratory of Integrative Neuroscience, Physics Department, University of Buenos Aires, Buenos Aires, Argentina, 2 Institute of Biomedical Engineering, Faculty of
Engineering, University of Buenos Aires, Buenos Aires, Argentina, 3 Laboratory of Complex Systems, Computer Science Department, University of Buenos Aires, Buenos
Aires, Argentina, 4 Netherlands Institute for Neuroscience, An Institute of the Royal Netherlands Academy of Arts and Sciences (KNAW), Amsterdam, The Netherlands,
5 Department of Integrative Neurophysiology, Vrije Universiteit, Amsterdam, The Netherlands, 6 INSERM, CEA, Cognitive Neuroimaging Unit, Orsay, France, 7 Colle`ge de
France, Paris, France
Abstract
The human brain efficiently solves certain operations such as object recognition and categorization through a massively
parallel network of dedicated processors. However, human cognition also relies on the ability to perform an arbitrarily large
set of tasks by flexibly recombining different processors into a novel chain. This flexibility comes at the cost of a severe
slowing down and a seriality of operations (100­500 ms per step). A limit on parallel processing is demonstrated in
experimental setups such as the psychological refractory period (PRP) and the attentional blink (AB) in which the processing
of an element either significantly delays (PRP) or impedes conscious access (AB) of a second, rapidly presented element.

  

Source: Andrzejak, Ralph Gregor - Departament de Tecnologia, Universitat Pompeu Fabra

 

Collections: Computer Technologies and Information Sciences