M
Marc Colonnier
Researcher at Laval University
Publications - 15
Citations - 1770
Marc Colonnier is an academic researcher from Laval University. The author has contributed to research in topics: Neuron & Cortex (anatomy). The author has an hindex of 15, co-authored 15 publications receiving 1740 citations.
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Journal ArticleDOI
A laminar analysis of the number of neurons, glia, and synapses in the visual cortex (area 17) of adult macaque monkeys
John O'Kusky,Marc Colonnier +1 more
TL;DR: The number of neurons, glia, and synapses in the visual cortex of adult macaque monkeys has been estimated by stereological methods and Laminae with higher neuronal densities tend to have higher synaptic densities but the correlation is not perfectly concordant.
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A laminar analysis of the number of round‐asymmetrical and flat‐symmetrical synapses on spines, dendritic trunks, and cell bodies in area 17 of the cat
Clermont Beaulieu,Marc Colonnier +1 more
TL;DR: The number of synapses per unit volume of tissue (Nv) has been estimated in individual laminae of the binocular and monocular regions of area 17 in six adult cats by using a method of size‐frequency distribution and shows no difference between either RA or FS synapses in the two regions nor in the Nv of RA synapses between cats.
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Synaptophysin expression during synaptogenesis in the rat cerebellar cortex
Nicole Leclerc,Philip W. Beesley,Ian R. Brown,Marc Colonnier,James W. Gurd,Toni Paladino,Richard Hawkes +6 more
TL;DR: Data suggest that neuronal growth cones express a synapse‐specific antigen before complete morphological synapses are present, and antisynaptophysin immunoreactivity increases progressively, along with the maturing cell populations, for both the granule cell‐Purkinje cell and the mossy fiber‐granule cell synapses.
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Postnatal changes in the number of neurons and synapses in the visual cortex (area 17) of the macaque monkey: a stereological analysis in normal and monocularly deprived animals.
John O'Kusky,Marc Colonnier +1 more
TL;DR: An increase in neuronal connectivity in the striate cortex from birth to 6 months, especially in layers I–III, and a subsequent decrease in the adult is demonstrated.
Journal ArticleDOI
Monoclonal antibodies reveal sagittal banding in the rodent cerebellar cortex
TL;DR: Both antibodies reveal the biochemical differentiation of the rodent cerebellar cortex into antigenically distinct sagittal zones of developing rat cerebellum.