Cited by 333Neural dynamics and brain functionMemory and Neural MechanismsNeural Networks and Applications

Probabilistic Interpretation of Population Codes

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Zemel, Richard S., Dayan, Peter, Pouget, Alexandre·1998·Neural Computation

Abstract

We present a general encoding-decoding framework for interpreting the activity of a population of units. A standard population code interpretation method, the Poisson model, starts from a description as to how a single value of an underlying quantity can generate the activities of each unit in the population. In casting it in the encoding-decoding framework, we find that this model is too restrictive to describe fully the activities of units in population codes in higher processing areas, such as the medial temporal area. Under a more powerful model, the population activity can convey information not only about a single value of some quantity but also about its whole distribution, including its variance, and perhaps even the certainty the system has in the actual presence in the world of the entity generating this quantity. We propose a novel method for forming such probabilistic interpretations of population codes and compare it to the existing method.

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  • The neural recordings support the idea of a Bayesian brain and a neural mechanism of decision making that does not flip into a fixed point or attractor state but instead approximates the formation of a probability distribution.

    “From this perspective, our neural recordings support the idea of a “Bayesian brain” (66) and a neural mechanism of decision making that does not flip into a fixed point or attractor state but instead approximates the formation of a probability distribution (41, 67).”
  • LIP neurons are hypothesized to encode the attentional salience or expected value of a visual saccade target, but these concepts cannot explain the pattern of LIP activity in the experiment.

    “LIP neurons are hypothesized to encode the attentional salience or expected value of a visual saccade target (52, 53, 63), but these concepts cannot explain the pattern of LIP activity in our experiment.”

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Research works printed but not linked: 4

  1. Anderson, CH (1994). International Journal of Modern Physics C, 5, 135-137.
  2. Anderson, CH & Van Essen, DC (1994) . In Computational Intelligence Imitating Life, 213-222. New York: IEEE Press.
  3. Salinas, E & Abbott, LF (1994). Journal of Computational Neuroscience, 1, 89-107.
  4. Seung, HS & SompoJinsky, H (1993). Proceedings of the National Academy of Sciences, USA, 90, 10749-10753.

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Authors
Zemel, R. S., Dayan, P., & Pouget, A.
Affiliations
  • University of Arizona (US)
  • Massachusetts Institute of Technology (US)
  • Georgetown University (US)
Venue
Neural Computation
Publisher
MIT Press
Published
1998-02-01
Volume
10
Issue
2
Pages
403-430
ISSN
  • 0899-7667 (ISSN-L)
  • 1530-888X
OpenAlex
W1985162039
Cited by
333
References
32
Citations by year
2026: 9 · 2025: 13 · 2024: 15 · 2023: 9 · 2022: 11 · 2021: 9 · 2020: 11 · 2019: 13 · 2018: 11 · 2017: 16 · 2016: 16 · 2015: 16 · 2014: 15 · 2013: 18 · 2012: 16
FWCI
4.24
Type
journal article
Language
en
Open access
Locations
  • Neural Computation (publishedVersion)
  • PubMed (publishedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
  • James S. McDonnell Foundation
  • Surdna Foundation
  • National Institutes of Health (1r29mh055541-01)
  • National Institute of Mental Health (R29 MH 55541-01)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Physical Sciences › Computer Science › Artificial Intelligence › Neural Networks and Applications
Keywords
population coding, probabilistic interpretation, Poisson model, population activity, medial temporal lobe, neural coding, uncertainty representation
MeSH terms
Data Interpretation, Statistical, Models, Neurological, Neurons, Probability, Models, Statistical, Poisson Distribution

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