scholarly journals Cortical and thalamic connectivity of temporal visual cortical areas 20a and 20b of the domestic ferret ( Mustela putorius furo )

2019 ◽  
Vol 527 (8) ◽  
pp. 1333-1347 ◽  
Author(s):  
Leigh‐Anne Dell ◽  
Giorgio M. Innocenti ◽  
Claus C. Hilgetag ◽  
Paul R. Manger
Keyword(s):  
Mustela Putorius ◽  
Cortical Areas ◽  
Visual Cortical ◽  
Mustela Putorius Furo

scholarly journals Cortical and thalamic connectivity of occipital visual cortical areas 17, 18, 19, and 21 of the domestic ferret ( Mustela putorius furo )

2019 ◽  
Vol 527 (8) ◽  
pp. 1293-1314 ◽  
Author(s):  
Leigh‐Anne Dell ◽  
Giorgio M. Innocenti ◽  
Claus C. Hilgetag ◽  
Paul R. Manger
Keyword(s):  
Mustela Putorius ◽  
Cortical Areas ◽  
Visual Cortical ◽  
Mustela Putorius Furo

scholarly journals Cortical and thalamic connectivity of occipital visual cortical areas 17, 18, 19 and 21 of the domestic ferret (Mustela putorius furo).

2018 ◽  
Author(s):  
Leigh-Anne Dell ◽  
Giorgio M Innocenti ◽  
Claus C Hilgetag ◽  
Paul R Manger
Keyword(s):  
Brain Connectivity ◽  
Dorsal Stream ◽  
Mustela Putorius ◽  
Cortical Connectivity ◽  
Ipsilateral Hemisphere ◽  
Dorsal Thalamus ◽  
Visual Thalamus ◽  
Cortical Areas ◽  
Visual Areas ◽  
Visual Cortical

The present study describes the ipsilateral and contralateral cortico-cortical and cortico-thalamic connectivity of the occipital visual areas 17,18, 19 and 21 in the ferret using standard anatomical tract-tracing methods. In line with previous studies of mammalian visual cortex connectivity, substantially more anterograde and retrograde label was present in the hemisphere ipsilateral to the injection site compared to the contralateral hemisphere. Ipsilateral reciprocal connectivity was the strongest within the occipital visual areas, while weaker connectivity strength was observed in the temporal, suprasylvian and parietal visual areas. Callosal connectivity tended to be strongest in the homotopic cortical areas, and revealed a similar areal distribution to that observed in the ipsilateral hemisphere, although often less widespread across cortical areas. Ipsilateral reciprocal connectivity was observed throughout the visual nuclei of the dorsal thalamus, with no contralateral connections to the visual thalamus being observed. The current study, along with previous studies of connectivity in the cat, identified the posteromedial lateral suprasylvian visual area (PMLS) as a distinct network hub external to the occipital visual areas in carnivores, implicating PMLS as a potential gateway to the parietal cortex for dorsal stream processing. These data will also contribute to the Ferretome (www.ferretome.org), a macro connectome database of the ferret brain, providing essential data for connectomics analyses and cross-species analyses of connectomes and brain connectivity matrices, as well as providing data relevant to additional studies of cortical connectivity across mammals and the evolution of cortical connectivity variation.

Location, architecture, and retinotopy of the anteromedial lateral suprasylvian visual area (AMLS) of the ferret (Mustela putorius)

2008 ◽  
Vol 25 (1) ◽  
pp. 27-37 ◽  
Author(s):  
PAUL R. MANGER ◽  
GERHARD ENGLER ◽  
CHRISTIAN K.E. MOLL ◽  
ANDREAS K. ENGEL
Keyword(s):  
Visual Area ◽  
Domestic Cat ◽  
Lower Visual Field ◽  
Mustela Putorius ◽  
Cortical Areas ◽  
Architectural Features ◽  
Visual Areas ◽  
Retinotopic Organization ◽  
Visual Cortical ◽  
Cortical Visual Areas

The present paper describes the results of architectural and electrophysiological mapping observations of the medial bank of the suprasylvian sulcus of the ferret immediately caudal to somatosensory regions. The aim was to determine if the ferret possessed a homologous cortical area to the anteromedial lateral suprasylvian visual area (AMLS) of the domestic cat. We studied the architectural features and visuotopic organization of a region that we now consider to be a homologue to the cat AMLS. This area showed a distinct architecture and retinotopic organization. The retinotopic map was complex in nature with a bias towards representation of the lower visual field. These features indicate that the region described here as AMLS in the ferret is indeed a direct homologue of the previously described cat AMLS and forms part of a hierarchy of cortical areas processing motion in the ferret visual cortex. With the results of the present study and those of earlier studies a total of twelve cortical visual areas have been determined presently for the ferret, all of which appear to have direct homologues with visual cortical areas in the cat (which has a total of eighteen areas).

Coronaviren als Ursache einer systemischen granulomatösen Entzündung bei einem Frettchen (Mustela putorius furo)

2009 ◽  
Vol 37 (01) ◽  
pp. 40-44
Author(s):  
C. Maresch ◽  
A. Bracke ◽  
D. Bröker ◽  
A. Kirchhoff ◽  
J. P. Teifke
Keyword(s):  
Sich Eine ◽  
Mustela Putorius ◽  
Granulomatöse Entzündung ◽  
Mustela Putorius Furo

Zusammenfassung Gegenstand: Ein 3 Jahre altes weibliches Frettchen (Mustela putorius furo) wurde mit vergrößerten Kopflymphknoten bei ungestörtem Allgemeinbefinden vorgestellt. Im weiteren Verlauf kam es zu einer syste-mischen Schwellung der Körperlymphknoten und zu einer Vergrößerung der Milz bei zunehmender Verschlechterung des Allgemeinbefindens. Material und Methoden: Nach klinischer und ultrasonographischer Untersuchung wurden Feinnadelaspirate von Milz und Lymphknoten gewonnen und zytologisch untersucht. Die Milz und ein geschwollener Kniekehllymphknoten wurden entnommen und histopathologisch sowie immunhistologisch auf Gruppe-1-Coronavirusantigen untersucht. Ergebnisse: Zytopathologisch war eine reaktive Hyperplasie der vergrößerten Milz und des Lymphknotens nachweisbar. Histopathologisch fanden sich eine herdförmige pyogranulomatöse Splenitis sowie eine granulomatöse Lymphadenitis. Coronavirusantigen konnte in Makrophagen von Milz und Lymphknoten nachgewiesen werden. Schlussfolgerung: Als Ursache für die granulomatöse Entzündung wird die systemische Coronavirusinfektion der Frettchen (FSCV) angesehen, die vermutlich durch einen mit dem enteralen Coronavirus der Frettchen (FECV) eng verwandten Erreger hervorgerufen wird.

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