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Understanding VisionTheory, Models, and Data$
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Li Zhaoping

Print publication date: 2014

Print ISBN-13: 9780199564668

Published to Oxford Scholarship Online: August 2014

DOI: 10.1093/acprof:oso/9780199564668.001.0001

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The efficient coding principle

The efficient coding principle

Chapter:
(p.67) 3 The efficient coding principle
Source:
Understanding Vision
Author(s):

Li Zhaoping

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199564668.003.0003

Starting with a brief introduction to information theory, this chapter describes in detail the proposal that visual encoding in the early stages of the visual pathway aims to extract as much information as possible about visual inputs using limited neural resources—the efficient coding principle. Through examples and case studies, this principle is applied to understand physiological data on input sampling and neural receptive fields in the retina and the primary visual cortex (V1), and to understand the consequent behavioral sensitivities to visual inputs. In particular, this principle is applied to understand spatial coding, temporal coding, stereo coding, and color coding, as well as how visual coding in these different dimensions interact with each other and how the coding adapts to input environment. Predictions from this principle and their experimental tests are presented.

Keywords:   visual encoding, spatial coding, stereo coding, color coding, temporal coding, neural receptive fields, retina, primary visual cortex, behavioral sensitivities

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