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  • 1970-1974  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 270 (1974), S. 289-293 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The states of free electrons in a magnetic field confined to a box of finite volume are determined and used to calculate the average magnetic moment and the non-dissipative electric and heat current in an unambiguous way. It is shown that for infinite volume the average magnetic moment coincides with the magnetization calculated by Landau. Similarly, for infinite volume, the non-dissipative transport coefficients coincide with those calculated by Zyryanov and Silin who use Landau's method and subtract the purely diamagnetic parts from the total currents. We think that our considerations give an answer to the often discussed question, why the Landau calculation of the magnetization and similar calculations of the non-dissipative transport coefficients are correct for a large system.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of neurology 202 (1972), S. 52-57 
    ISSN: 1432-1459
    Keywords: Hemispherectomy ; Pain ; Thalamic Pain ; Hyperpathia ; Faciomanual Irradiation of Pain ; Sensory System ; Somatotopic Structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung 4 Wochen nach subdominanter Hemisphärektomie mit dorsolateraler Thalamusläsion wird ein kontralaterales, durch lokalen Kältereiz auslösbares, hyperpathisches Phänomen beschrieben und als facio-manuale Schmerzirradiation bezeichnet. Es wird mit den spontanen hyperpathischen Syndromen von Edinger (halbseitig) und Déjérine-Roussy (cheiro-oral) verglichen. Die Hyperpathie wird als Folge der quantitativen und qualitativen Reduktion intrathalamischer, sensibler Fasersysteme angesehen: Ausfall der diskriminatorischen corticalen Schmerzleitung unter Erhalt der hierdurch enthemmten protopathischen subcorticalen Schmerzbahn. Die facio-manuale Schmerzausstrahlung wird durch die somatotopische Gliederung des Thalamus erklärt.
    Notes: Summary 4 weeks after subdominant hemispherectomy with an intraoperative dorsolateral thalamic lesion a contralateral hyperaesthetic phenomenon (hyperpathia) became apparent: cold stimulation of the cheek elicited a faciomanual irradiation of pain. The hyperaesthetic phenomenon is compared to the spontaneous thalamic syndrome described by Edinger (hemilateral) and by Déjérine-Roussy (cheiro-oral). The hyperaesthesia is regarded as the result of a quantitative and qualitative reduction of sensory intrathalamic axonal systems: the discriminatory cortical conduction of pain is lost whereas the protopathic subcortical pain network is retained and its inhibition abolished as well. The faciomanual irradiation of pain appears plausible in view of the somatotopic structure of the small neuronal nucleus (V.c.pc.).
    Type of Medium: Electronic Resource
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