Differences in the ponto-cerebellar projection to the cerebellar caudal vermis and hemisphere: a retrograde double labeling study in the rabbit

• Autorzy: Zguczynski L. , Bukowska D. , Mierzejewska-Krzyzowska B.
• Języki publikacji: EN

Abstrakty

EN

Following paired unilateral injections of fluorescent tracers FB (Fast Blue) and DY (Diamidino Yellow) into the the rostral and caudal paramedian lobule (rPML, cPML) as well as the pyramis (Pr) and uvula (Uv), the distribution pattern of retrogradely labeled neurons in the pontine nuclei (PN) indicates that these two ponto-cerebellar projections are organized topographically. Both projections are bilateral. Projection to PML originates from the caudal two-thirds whereas that to the Pr and Uv - from the entire rostrocaudal extent of PN. Participation of individual PN nuclei in the projections differs. The strongest connections to rPML/cPML and Pr/Uv send the dorsolateral (44% and 56%, respectively) and paramedian (24% and 26%, respectively) nuclei. The involvement of the lateral (20% and 14%) and peduncular (12% and 4%) nuclei is weaker. The ventral pontine nucleus sends no fibers to PML or Pr and Uv. Moreover, following injections into the rPML and cPML, some regions where FB and DY single labeled neurons were intermingled, contained in addition small number of double labeled neurons. These neurons are parent for collaterals projections to both parts of PML. Differences in projections under study may arise from various functions of the PML (rPML and cPML receive afferent information from the forelimb and hindlimb, respectively) and the caudal vermal lobules (Pr receives spinal cord afferents related to innervation of axial and proximal-limb muscles, and Uv is interconnected with the vestibular nuclei)

• Wydawca: -
• Czasopismo: Acta Neurobiologiae Experimentalis
• Rocznik: 2011
• Tom: 71
• Numer: S
• Opis fizyczny: p.79

Twórcy

autor

Zguczynski L.

• Department of Anatomy and Anthropology, University School of Physical Edication in Gorzow Wlkp., Gorzow Wlkp., Poland

autor

Bukowska D.

• Department of Neurobiology, University School of Physical Education in Poznan, Poznan, Poland

autor

Mierzejewska-Krzyzowska B.

• Department of Anatomy and Anthropology, University School of Physical Edication in Gorzow Wlkp., Gorzow Wlkp., Poland

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