Publications
Text queries can be conducted by Author, Title, or Keyword.
Anatomical organization of internal neuronal circuits in the motor
thalamus
Source: 1993 Dec;:155-164.
Author: Ilinsky IA, Toga AW, Kultes-Ilinsly K.
Abstract:
During the last two decades significant progress has been made in our understanding of the organisation of thalamic connections and ultrastructure. The thalamic nuclei involved in the motor control remain the least studied as compared to thalamic regions processing sensory modalities. However, recent findings have revealed two important aspects of organisation of the motor thalamic nuclei. One is the significant species differences which, for that matter, are more obvious in the motor thalamus compared to other thalamic regions. Another, is the structural and, perhaps, functional diversity within the motor thalamus. The species differences are best understood with respect to topographic relationships of the subcortical afferents to the motor thalamus and the organisation of local circuits in respective terminal fields. This report summarizes the most important findings obtained in our laboratory in the last several years on the ultrastructure of the cerebellar and basal ganglia afferent territories in the primate thalamus. First of all, there is a significant difference between the VL and VA regarding the density of LCN: in the VL it is about 3 times higher than in the VA. This is also reflected in staining patterns for GABA or GAD in immunocytochemical preparations both at light and electron microscopic levels. In the VL the fine meshwork of GABAergic processes is composed mostly of LCN dentrites, although axons of LCN and axons of the reticular thalamic nucleus cells undoubtedly contribute to it too.
Source: 1993 Dec;:155-164.
Author: Ilinsky IA, Toga AW, Kultes-Ilinsly K.
Abstract:
During the last two decades significant progress has been made in our understanding of the organisation of thalamic connections and ultrastructure. The thalamic nuclei involved in the motor control remain the least studied as compared to thalamic regions processing sensory modalities. However, recent findings have revealed two important aspects of organisation of the motor thalamic nuclei. One is the significant species differences which, for that matter, are more obvious in the motor thalamus compared to other thalamic regions. Another, is the structural and, perhaps, functional diversity within the motor thalamus. The species differences are best understood with respect to topographic relationships of the subcortical afferents to the motor thalamus and the organisation of local circuits in respective terminal fields. This report summarizes the most important findings obtained in our laboratory in the last several years on the ultrastructure of the cerebellar and basal ganglia afferent territories in the primate thalamus. First of all, there is a significant difference between the VL and VA regarding the density of LCN: in the VL it is about 3 times higher than in the VA. This is also reflected in staining patterns for GABA or GAD in immunocytochemical preparations both at light and electron microscopic levels. In the VL the fine meshwork of GABAergic processes is composed mostly of LCN dentrites, although axons of LCN and axons of the reticular thalamic nucleus cells undoubtedly contribute to it too.