Journal Article

FZJ-2022-00040

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Receptor architecture of macaque and human early visual areas: not equal, but comparable

Rapan, L. (Corresponding author)FZJ* ; Niu, M.FZJ* ; Zhao, L.FZJ* ; Funck, T.FZJ* ; Amunts, K.FZJ* ; Zilles, K. ; Palomero-Gallagher, N.FZJ*

2022
Springer Heidelberg

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Please use a persistent id in citations: http://hdl.handle.net/2128/31167  doi:10.1007/s00429-021-02437-y

Abstract: Existing cytoarchitectonic maps of the human and macaque posterior occipital cortex differ in the number of areas they display, thus hampering identification of homolog structures. We applied quantitative in vitro receptor autoradiography to characterize the receptor architecture of the primary visual and early extrastriate cortex in macaque and human brains, using previously published cytoarchitectonic criteria as starting point of our analysis. We identified 8 receptor architectonically distinct areas in the macaque brain (mV1d, mV1v, mV2d, mV2v, mV3d, mV3v, mV3A, mV4v), and their respective counterpart areas in the human brain (hV1d, hV1v, hV2d, hV2v, hV3d, hV3v, hV3A, hV4v). Mean densities of 14 neurotransmitter receptors were quantified in each area, and ensuing receptor fingerprints used for multivariate analyses. The 1st principal component segregated macaque and human early visual areas differ. However, the 2nd principal component showed that within each species, area-specific differences in receptor fingerprints were associated with the hierarchical processing level of each area. Subdivisions of V2 and V3 were found to cluster together in both species and were segregated from subdivisions of V1 and from V4v. Thus, comparative studies like this provide valuable architectonic insights into how differences in underlying microstructure impact evolutionary changes in functional processing of the primate brain and, at the same time, provide strong arguments for use of macaque monkey brain as a suitable animal model for translational studies.

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Contributing Institute(s):

1. Strukturelle und funktionelle Organisation des Gehirns (INM-1)

Research Program(s):

1. 5251 - Multilevel Brain Organization and Variability (POF4-525) (POF4-525)
2. HBP SGA3 - Human Brain Project Specific Grant Agreement 3 (945539) (945539)
3. HIBALL - Helmholtz International BigBrain Analytics and Learning Laboratory (HIBALL) (InterLabs-0015) (InterLabs-0015)
4. 3D-MMA - Gradienten der Verteilung multipler Transmitterrezeptoren in der Hirnrinde als Grundlage verteilter kognitiver, sensorischer und motorischer Funktionen. (01GQ1902) (01GQ1902)

Appears in the scientific report 2022

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