Need for cross-level iterative re-entry in models of visual processing.
Psychon Bull Rev
; 2023 Oct 17.
Article
em En
| MEDLINE
| ID: mdl-37848658
ABSTRACT
Two main hypotheses regarding the directional flow of visual information processing in the brain have been proposed feed-forward (bottom-up) and re-entrant (top-down). Early theories espoused feed-forward principles in which processing was said to advance from simple to increasingly complex attributes terminating at a higher area where conscious perceptions occur. That view is disconfirmed by advances in neuroanatomy and neurophysiology, which implicate re-entrant two-way signaling as the predominant form of communication between brain regions. With some notable exceptions, the notion of re-entrant processing has had a relatively modest effect on computational models of perception and cognition, which continue to be predominantly based on feed-forward or within-level re-entrant principles. In the present work we describe five sets of empirical findings that defy interpretation in terms of feed-forward or within-level re-entrant principles. We conclude by urging the adoption of psychophysical, biological, and computational models based on cross-level iterative re-entrant principles.
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MEDLINE
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En
Ano de publicação:
2023
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Article