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The Visual (Un)Conscious and Its (Dis)ContentsA microtemporal approach$
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Bruno G. Breitmeyer

Print publication date: 2014

Print ISBN-13: 9780198712237

Published to Oxford Scholarship Online: August 2014

DOI: 10.1093/acprof:oso/9780198712237.001.0001

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Functional hierarchy of unconscious object processing

Functional hierarchy of unconscious object processing

Chapter:
(p.89) Chapter 5 Functional hierarchy of unconscious object processing
Source:
The Visual (Un)Conscious and Its (Dis)Contents
Author(s):

Bruno G. Breitmeyer

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198712237.003.0005

The conscious registration of visual stimuli can be disrupted by various noninvasive psychophysical “blinding” methods. The results of studies using such techniques reveals a hierarchy of unconscious levels of processing. Such hierarchies reveal how the different levels of unconscious information processing relate to different types of visual information processing. The effects of binocular-rivalry suppression occur before those underlying metacontrast and backward pattern masking. The suppressive effects of the latter two in turn occur before those produced by visual crowding and by the attentional blink, both of which in their turn occur before the suppressive effects of object-substitution masking. The fact that object-substitution masking, highest in the hierarchy, can suppress not only shape but also semantic and categorical information indicates that when shape information is suppressed at the object-substitution level, access to higher semantic levels of processing also is suppressed.

Keywords:   neural correlates of unconscious vision, neural correlates of conscious vision, metacontrast masking, binocular rivalry, visual crowding, attentional blink, object-substitution masking

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