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  • 1
    Electronic Resource
    Electronic Resource
    Selective degeneration of two out of the nine types of synapses in cat caudate nucleus after cortical lesions (1978)
    Springer
    Experimental brain research 31 (1978), S. 67-80 
    Details
    ISSN: 1432-1106
    Keywords: Caudate ; Cat ; 9 Types of synapses ; Degenerated ; Cortico-striate boutons
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In the cat caudate nucleus the same nine types of synapses are found as in putamen and fundus striati. The three parts of the striatum in the strict sense do not differ in the morphological differentiation of synapse types but only in their quantitative distribution. One-third of all synapses in the caudate nucleus are axo-spinous type IV synapses with a curved and divided asymmetric contact. This strongly suggests that the caudate nucleus interneuronal apparatus is dominated by centre-median input, in contrast to the putamen which is controlled by the cortico-striatal input to its internuncial cells and by its strong intrastriatal feedback mechanism. Extensive destruction of the convexity of the cortex and the medial cortex in one hemisphere results in dark degeneration of a large proportion of two of the nine types of caudate synapses: a) the axo-dendritic type VII synapses exciting the large aspiny caudate neurons and b) the axo-spinous type III synapses making contact with the small spiny neurons of the interneuronal cell apparatus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00235805
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Degeneration of two of nine types of synapses in the putamen after center median coagulation in the cat (1977)
    Springer
    Experimental brain research 28 (1977), S. 345-361 
    Details
    ISSN: 1432-1106
    Keywords: Putamen ; Cat ; Center median parvocellular neurons ; Ultrastructure ; Degenerated boutons (type VII and IV)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The cat putamen contains the identical nine types of synapses and the same proportion of axo-dendritic (or axo-somatic) synapses as described for the fundus striati. However, type III (cortico-striatal) (31∶16%) and type V (axon-collateral) (13∶1%) occur much more frequently and type I (nigro-striatal) much less frequently (14∶34%) in the putamen than in the fundus striati. Of the axo-spinous synapses only type IV, with densely arranged small round vesicles and interrupted, asymmetric contact, shows a dark degeneration after center median lesions, mainly in the parvocellular part. Of the six axo-dendritic (or axo-somatic) synapses, only type VII, with densely packed small round vesicles and asymmetric contact, is degenerated after the same lesion in the center median nucleus. However, after such lesions type VII synapses are much more frequently degenerated in the putamen than those of type IV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00235716
    Location Call Number Limitation Availability
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    Paper (German National Licenses)
    Fulltext
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