Cited by 3,642Visual perception and processing mechanismsNeural dynamics and brain functionSparse and Compressive Sensing Techniques

Sparse coding with an overcomplete basis set: A strategy employed by V1?

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Olshausen, Bruno A., Field, David J.·1997·Vision Research

Abstract

The spatial receptive fields of simple cells in mammalian striate cortex have been reasonably well described physiologically and can be characterized as being localized, oriented, and bandpass, comparable with the basis functions of wavelet transforms. Previously, we have shown that these receptive field properties may be accounted for in terms of a strategy for producing a sparse distribution of output activity in response to natural images. Here, in addition to describing this work in a more expansive fashion, we examine the neurobiological implications of sparse coding. Of particular interest is the case when the code is overcomplete--i.e., when the number of code elements is greater than the effective dimensionality of the input space. Because the basis functions are non-orthogonal and not linearly independent of each other, sparsifying the code will recruit only those basis functions necessary for representing a given input, and so the input-output function will deviate from being purely linear. These deviations from linearity provide a potential explanation for the weak forms of non-linearity observed in the response properties of cortical simple cells, and they further make predictions about the expected interactions among units in response to naturalistic stimuli.

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Crossref · 10.1016/s0042-6989(97)00169-7

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47 of 47 references verified0 citation errors · 0 not checkable

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  • The fundamental problem faced by brains and machines is the same: efficiently extracting and understanding the underlying structure in images, text, sounds, etc.

    “Even though the mediums may differ -silicon transistors versus biological neurons -the fundamental problem faced by brains and machines is the same: efficiently extracting and understanding the underlying structure in images, text, sounds, etc. (Barlow et al., 1961;Olshausen & Field, 1997).”

    From The Platonic Representation Hypothesis (2024) · cites this paper as Olshausen & Field, 1997

  • Any deviation from typical behaviour is considered an anomaly and will be detected as an attack.

    “Any deviation from this typical behaviour is considered an anomaly and will be detected as an attack [180] [153].”

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Authors
Olshausen, B. A., & Field, D. J.
Affiliations
Cornell University (US)
Corresponding author
Olshausen, Bruno A.
Venue
Vision Research
Publisher
Elsevier BV
Published
1997-12
Volume
37
Issue
23
Pages
3311-3325
ISSN
0042-6989 (ISSN-L)
OpenAlex
W2105464873
Cited by
3,642
References
47
Citations by year
2026: 49 · 2025: 95 · 2024: 90 · 2023: 114 · 2022: 121 · 2021: 179 · 2020: 233 · 2019: 224 · 2018: 244 · 2017: 251 · 2016: 239 · 2015: 228 · 2014: 264 · 2013: 208 · 2012: 169
FWCI
13.17
Type
journal article
Language
en
Open access
Locations
  • Vision Research (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5f32mh011062-02, 5r29mh050588-05)
  • National Institute of Mental Health (R29-MH50588, F32-MH11062)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Physical Sciences › Engineering › Computational Mechanics › Sparse and Compressive Sensing Techniques
Keywords
sparse coding, primary visual cortex, simple cells, receptive fields, non-orthogonal basis functions, natural image statistics, neural coding
MeSH terms
Algorithms, Animals, Mammals, Models, Psychological, Visual Cortex, Visual Perception

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