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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Experimental brain research 42 (1981), S. 249-259 
    ISSN: 1432-1106
    Keywords: Passive movement ; Cerebellar cortex ; Climbing fiber and mossy fiber system ; Granule cells ; Purkinje cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In the decerebrate cat discharges of Purkinje cells with simple and complex spikes as well as granule cell discharges in the c1-zone of lobules Va, b and c of the cerebellar anterior lobe were analyzed during a passive movement of the cat's forepaw. Penetrations were made 50 μm apart along the mediolateral and parasagittal directions, the depth never exceeding 500 μm. The response of the Purkinje cells to the climbing fiber input was surprisingly constant, while simple spike responses of the same cells showed a great variability to the same input. The variability between granule cell discharges recorded at a 50 μm distance from each other was similar to that of the simple spikes of the Purkinje cell. It is assumed that because of a patchy distribution of excited granule cells, two neighbouring Purkinje cells may receive a different information via their parallel fiber inputs. This difference is considered to be responsible for the great variability of their responses to mossy fiber inputs.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Pflügers Archiv 312 (1969), S. 18-31 
    ISSN: 1432-2013
    Keywords: Cerebraler Cortex ; Splanchnicusafferenzen ; Cerebral Cortex ; Splanchnic Afferents
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary 1. The areas of representation of the splanchnic nerve were investigated in the following cortical areas: somatic area II (ipsi-and contralteral), and somatic area I (contralateral). These areas of representation were found to be much larger than formerly reported in the literature. 2. The fibers of the Aβ-and Aγδ-group are represented differentially in these areas. The fastet fibers of the Aβ-group are primarily represented in the contralateral somatic area II. The ipsilateral area II receives afferent impulses from the entire range of the Aβ-fibers, and probably also from the Aγδ-fibers. In the contralateral somatic area I, there is probably no representation of the fastest fibers of the Aβ-group. Otherwise all other fibers sizes of the Aβ-group and the Aγδ-fibers are represented. 3. Of all the pathways leading to the different cortical areas, the pathway to the contralateral somatic area II transmits with the greatest strength. 4. The Aβ afferentś of the splanchnic nerve interfere at a supraspinal level with afferents of the ipsilateral radial superficial nerve and with afferents of the contralateral splanchnic nerve. Thus, there exists a dominance of the somatic afferents (radial nerve) over the visceral afferents, and a dominance of the contralateral over the ipsilateral afferents of the splanchnic nerves.
    Notes: Zusammenfassung 1. In folgenden corticalen Arealen wurde die Repräsentation des N. splanchnicus unterscuht: Area somatica II, ipsi-und kontralateral und Area somatica I, kontralateral. Die von uns ermittelten Repräsentationsgebiete sind flächenmäßig größer als sie in früheren Arbeiten angegeben sind. 2. Die Aβ-und Aγδ-Fasern des N. splanchnicus sind in diesen Arealen unterschiedlich repräsentiert. Die schnellsten Fasern der Aβ-Gruppe sind vornehmlich in der Area somatica II, kontralateral repräsentiert. Die Area somatica II, ipsilateral empfängt Impulse aus der ganzen Streubreite der Aβ-Fasern und wahrscheinlich auch von den Aγδ-Fasern. In der Area somatica I, kontralateral sind die schnellsten Fasern der Aβ-Gruppe wahrscheinlich nicht repräsentiert, ansonsten alle anderen Fasergrößen der Aβ-Gruppe und mit Sicherheit auch die Aγδ-Fasern. 3. Von den Leitungswegen, die zu den verschiedenen Arealen führen, hat der nach der Area somatica II, kontralateral die größte Übertragungsstärke. 4. Die Aβ-Afferenzen eines N. splanchnicus interferieren auf supraspinaler Ebene mit Afferenzen des ipsilateralen N. radialis superficialis und mit Afferenzen des kontralateralen N. splanchnicus. Dabei zeigt sich eine Dominanz der somatischen über die visceralen Afferenzen und eine Dominanz der kontralateralen über die ipsilateralen Afferenzen der N. splanchnici.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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