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Rolls, Edmund T. (2016) Cortical coding. Language, Cognition and Neuroscience . pp. 1-14. doi:10.1080/23273798.2016.1203443 ISSN 2327-3801.
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Official URL: http://dx.doi.org/10.1080/23273798.2016.1203443
Abstract
The encoding of information in the primate inferior temporal visual cortex, hippocampus, orbitofrontal cortex, and insula is described. All these areas have sparse distributed graded firing rate representations. The firing rate probability distribution is close to exponential. The information increases approximately linearly with the number of neurons. Consistent with this relative independence, there is little extra information that is available because of stimulus-dependent synchrony, and little redundancy. The code can be read very fast, in 20–50 ms, by dot-product, biologically plausible decoding. The advantages of this code include high capacity, generalisation, graceful degradation, and rapid readout of the information by biologically plausible dot-product decoding. None of these are properties of local or “grandmother-cell’ representations. Consistent evidence is becoming available for humans. These sparse distributed graded firing rate representations have major computational advantages for the brain including for language that are not met by local or ‘grandmother-cell’ representations.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QP Physiology | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Computer Science | ||||||||
Library of Congress Subject Headings (LCSH): | Temporal lobes | ||||||||
Journal or Publication Title: | Language, Cognition and Neuroscience | ||||||||
Publisher: | Taylor & Francis | ||||||||
ISSN: | 2327-3801 | ||||||||
Official Date: | 5 July 2016 | ||||||||
Dates: |
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Number of Pages: | 14 | ||||||||
Page Range: | pp. 1-14 | ||||||||
DOI: | 10.1080/23273798.2016.1203443 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 28 July 2016 | ||||||||
Date of first compliant Open Access: | 7 July 2017 | ||||||||
Funder: | Medical Research Council (Great Britain) (MRC), Wellcome Trust (London, England), Human Frontier Science Program (Strasbourg, France), European Commission (EC), Oxford McDonnell Network for Cognitive Neuroscience | ||||||||
Grant number: | PG8513790 (MRC) |
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