Cited by 139Visual perception and processing mechanismsNeural dynamics and brain functionNeuroscience and Neuropharmacology Research

Parallel processing in the corticogeniculate pathway of the macaque monkey

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Briggs, Farran, Usrey, W. Martin·2009·Neuron

Abstract

Summary Although corticothalamic feedback is ubiquitous across species and modalities, its role in sensory processing is unclear. This study provides the first detailed description of the visual physiology of corticogeniculate neurons in the primate. Using electrical stimulation to identify corticogeniculate neurons, we distinguish three groups of neurons with response properties that closely resemble those of neurons in the magnocellular, parvocellular and koniocellular layers of their target structure, the lateral geniculate nucleus (LGN) of the thalamus. Our results indicate that corticogeniculate feedback in the primate is stream-specific and provide strong evidence in support of the view that corticothalamic feedback can influence the transmission of sensory information from the thalamus to the cortex in a stream-selective manner.

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Crossref · 10.1016/j.neuron.2009.02.024

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  • Canonical circuits have segregated parallel processing streams.

    “A key property of canonical circuits is the segregation of parallel streams of processing.”

    From Canonical Microcircuits for Predictive Coding (2012) · cites this paper as Briggs and Usrey, 2009

    The Discussion section, “Feedforward and feedback pathways in the primate visual system” (page unavailable), calls separation into parallel streams a major hallmark of sensory processing and describes segregated streams in the primate visual system. The claim extends that property to canonical circuits generally, which this paper does not establish. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • The corticogeniculate feedback pathway from L6 preserves stream segregation: upper L6 cells preferentially synapse onto parvocellular LGN cells, and lower L6 cells target magnocellular LGN layers.

    “The corticogeniculate feedback pathway from L6 maintains this segregation, as upper L6 cells preferentially synapse onto parvocellular cells in the LGN, while lower L6 cells target the magnocellular LGN layers (Fitzpatrick et al., 1994; Briggs and Usrey, 2009).”

    From Canonical Microcircuits for Predictive Coding (2012) · cites this paper as Briggs and Usrey, 2009

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Research works printed but not linked: 1

  1. Jones EG 2007 The Thalamus Cambridge, UK Cambridge University Press

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Authors
Briggs, F., & Usrey, W. M.
Affiliations
University of California, Davis (US)
Corresponding author
Usrey, W. Martin
Venue
Neuron
Publisher
Elsevier BV
Published
2009-04
Volume
62
Issue
1
Pages
135-146
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2087235763
Cited by
139
References
99
Citations by year
2026: 1 · 2025: 7 · 2024: 9 · 2023: 2 · 2022: 5 · 2021: 31 · 2020: 6 · 2019: 4 · 2018: 7 · 2017: 15 · 2016: 5 · 2015: 7 · 2014: 7 · 2013: 7 · 2012: 8
FWCI
4.19
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (EY12576, EY13588, EY15580)
  • McKnight Foundation
  • National Science Foundation (0727115)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
corticothalamic feedback, lateral geniculate nucleus, visual processing, magnocellular pathway, parvocellular pathway, koniocellular pathway, thalamocortical transmission, macaque, visual neurons
MeSH terms
Action Potentials, Animals, Biophysics, Brain Mapping, Electric Stimulation, Feedback, Geniculate Bodies, Macaca mulatta, Male, Models, Neurological, Neurons, Photic Stimulation, Reaction Time, Visual Cortex, Visual Pathways, Cluster Analysis

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