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ConsciousnessCreeping up on the hard problem$
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Jeffrey Gray

Print publication date: 2006

Print ISBN-13: 9780198520917

Published to Oxford Scholarship Online: April 2010

DOI: 10.1093/acprof:oso/9780198520917.001.0001

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Bottom-up vs top-down processing

Bottom-up vs top-down processing

Chapter:
(p.195) Chapter 14 Bottom-up vs top-down processing
Source:
Consciousness
Author(s):

Jeffrey Gray

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198520917.003.0014

The approaches to the neural basis of conscious experience considered in the three previous chapters sway between two seductive sirens: one calling down from the top, the other calling up from the bottom. Top-down processing emphasises executive functions located in the frontal lobes, as in the global neuronal workspace of Chapter 12; while bottom-up processing emphasises the posterior cortex modules that mediate the basic ingredients of perception, as in Zeki's hypothesis (Chapter 13). This chapter looks at the possibility that both approaches are correct, but need to be combined in ways we have not yet considered.

Keywords:   consciousness, conscious experience, hippocampus, spatial mapping, episodic memory, hippocampal function

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