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  4. Cortical and thalamic connectivity of posterior parietal visual cortical areas PPc and PPr of the domestic ferret (Mustela putorius furo)
 
research article

Cortical and thalamic connectivity of posterior parietal visual cortical areas PPc and PPr of the domestic ferret (Mustela putorius furo)

Dell, Leigh-Anne
•
Innocenti, Giorgio M.  
•
Hilgetag, Claus C.
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June 1, 2019
Journal Of Comparative Neurology

The present study describes the ipsilateral and contralateral cortico-cortical and cortico-thalamic connectivity of the parietal visual areas, posterior parietal caudal cortical area (PPc) and posterior parietal rostral cortical area (PPr), in the ferret using standard anatomical tract-tracing methods. The two divisions of posterior parietal cortex of the ferret are strongly interconnected, however area PPc shows stronger connectivity with the occipital and suprasylvian visual cortex, while area PPr shows stronger connectivity with the somatomotor cortex, reflecting the functional specificity of these two areas. This pattern of connectivity is mirrored in the contralateral callosal connections. In addition, PPc and PPr are connected with the visual and somatomotor nuclei of the dorsal thalamus. Numerous connectional similarities exist between the posterior parietal cortex of the ferret (PPc and PPr) and the cat (area 7 and 5), indicative of the homology of these areas within the Carnivora. These findings highlight the existence of a frontoparietal network as a shared feature of the organization of parietal cortex across Euarchontoglires and Laurasiatherians, with the degree of expression varying in relation to the expansion and areal complexity of the posterior parietal cortex. This observation indicates that the ferret is a potentially valuable experimental model animal for understanding the evolution and function of the posterior parietal cortex and the frontoparietal network across mammals. The data generated will also contribute to a connectomics database, to further cross-species analyses of connectomes and illuminate wiring principles of cortical connectivity across mammals.

  • Details
  • Metrics
Type
research article
DOI
10.1002/cne.24630
Web of Science ID

WOS:000461821400002

Author(s)
Dell, Leigh-Anne
Innocenti, Giorgio M.  
Hilgetag, Claus C.
Manger, Paul R.
Date Issued

2019-06-01

Published in
Journal Of Comparative Neurology
Volume

527

Issue

8

Start page

1315

End page

1332

Subjects

Neurosciences

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Zoology

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Neurosciences & Neurology

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carnivora

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corpus callosum

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cortical evolution

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frontoparietal network

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hodology

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mustela putorious furo

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shrew tupaia-belangeri

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corticocortical connections

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frontoparietal cortex

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afferent connections

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extrastriate areas

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prefrontal cortex

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organization

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evolution

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primate

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zones

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LTS5  
Available on Infoscience
June 18, 2019
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/157870
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