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  • Acoustic startle response  (2)
  • Cerebellar calcification  (1)
  • Conjugal Form  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Acta neuropathologica 38 (1977), S. 73-76 
    ISSN: 1432-0533
    Schlagwort(e): Spinocerebellar atrophy ; Central neurofibromatosis ; Cerebellar calcification ; Intracerebral neuroma ; Hallervorden-Spatz' syndrome
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary A woman of 27 years without any family history developed a progressive spinocerebellar disorder and died 28 years later. The mean neuropathological findings were cerebello-olivary atrophy (late atrophy), degeneration of the dentate nuclei and brachia conjunctiva, degeneration of the pyramidal and spinocerebellar tracts and of the pars reticulata of substantia nigra. Findings according to Hallervorden-Spatz' disease were confined to the globus pallidus. Extensive calcification occurred in the cerebellar cortex and the dentate nuclei. Foci of atypical glia, glial ectopias, subependymal glial modules and focal neuromas were found in the brain. It is suggested that this unique case represents a combination of spinocerebellar degeneration and central neurofibromatosis.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    European archives of psychiatry and clinical neuroscience 214 (1971), S. 207-227 
    ISSN: 1433-8491
    Schlagwort(e): Subacute Spongiform Encephalopathy ; Creutzfeldt-Jakob Syndrome ; Conjugal Form ; Status Spongiosus ; Astroglia ; Nuclear Inclusions ; Slow Virus Disease ; Subakute spongiöse Encephalopathie ; Creutzfeldt-Jakob Syndrom ; Konjugale Form ; Status spongiosus ; Astroglia ; Kerneinschlüsse ; Slow Virus-Erkrankung
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Klinisch-morphologischer Bericht über 9 Fälle von subakuter spongiöser Encephalopathie (Jakob-Creutzfeldt-Syndrom) im Alter von 27–71 Jahren mit einer Krankheitsdauer von 5 Wochen bis 3 Jahre bzw. einmal sogar 8 Jahre. Der klinische Verlauf zeigte 3 Stadien: neurasthenisch-ängstliches Prodromalstadium, dementes Vollbild mit cerebellar-extrapyramidalen und corticopyramidalen Symptomen und Ausgang in einem Decerebrationssyndrom. Nur 1 Fall zeigte Myoklonien, 3 weitere andere Dyskinesien.„Typische“ EEG-Veränderungen fanden sich nur in einem von 7 untersuchten Fällen. Die neuropathologische Symptomtrias — Spongiöse Umwandlung des Neuropils, Astrogliahyperplasie und Nervenzell-Schädigung — betraf vorwiegend die Großhirnrinde, Striatum und Thalamus; 3 mal bestand schwere Kleinhirnschädigung. Korrelationen zwischen Klinik, EEG und neuropathologischem Befund waren nicht faßbar. Nach der vorzugsweisen Verteilung der Rindenläsionen ließen sich 2 Hauptausbreitungsmuster — diffus und fokal — abgrenzen, die im Einzelfall eine auffallende Konstanz zeigten. Das wird als Ausdruck einer individuell variablen Reaktion des ZNS-Gewehes auf das als Slow-Virus vermutete ätiologische Agens gedeutet. Die bisher unbekannte Beobachtung eines konjugalen Auftretens der „ataktischen“ Form der JCE mit fast gleichzeitigem Erkrankungsbeginn und schwerer Kleinhirnatrophie vom Körnerzelltyp spricht für die infektiöse Genese der Erkrankung. Die Bedeutung der in 3 Fällen beobachteten Kerneinschlüsse in Astrogliazellen ist ungeklärt.
    Notizen: Summary The following is a clinico-pathological report of 9 cases of subacute spongiform encephalopathy or Jakob-Creutzfeldt syndrome aged 27 to 71 years with a duration of illness from 5 weeks to 8 years. The clinical course showed 3 stages: a neurasthenic-anxious prodromal stage; full stage with dementia, cerebellar, extrapyramidal, and cortico-pyramidal symptoms; and final decerebrate state. Myoclonus was observed in one case; other dyskineasias were present in 3 more patients. “Typical” EEG findings were present only in one out of 7 examined cases. The neuropathological changes, characterized by spongy transformation of the neuropil, astroglial hyperplasia and neuronal damage, affected the cerebral cortex, striatum and thalamus. Severe cerebellar lesions were present in 3 cases. Correlations between clinical course, EEG findings and neuropathological findings could not be established. According to the predominant topographic distribution of the cortical lesions two patterns—diffuse and focal—could be separated which were observed with considerable consistency in one and the same case. These findings are believed to indicate a variable type of reaction of the CNS tissue in the individual case towards the aetiological agent, which is suggested as a slow virus. The hitherto unrecognized observation of a conjugal appearance of the “ataxic” type of JCS associated with a selective cell loss in the granular layer of the cerebellum is in favour of an infectious aetiology of the disorder. The significance of nuclear inclusions observed in the astroglia of 3 cases is obscure.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Behavior genetics 27 (1997), S. 579-582 
    ISSN: 1573-3297
    Schlagwort(e): Acoustic startle response ; sensitization ; amygdala ; Roman high- and low-avoidance rats
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Psychologie
    Notizen: Abstract To investigate the emotional reactions of two rat strains selectively bred for good and poor two-way avoidance acquisition (RHA/Verh and RLA/Verh), male animals of both strains were tested in an acoustic startle response test. They received 40 acoustic stimuli followed by 10 electric foot shocks and another 30 acoustic stimuli. RLA/Verh rats showed a significantly higher startle response compared to RHA/Verh animals, indicating a stronger emotional reaction to acoustic stimuli. In addition, the former showed a stronger response to foot shocks. Combined with earlier findings, we conclude that selection for two-way avoidance learning does not result in cognitive defects in the RLA/Verh strain but, rather, in stronger emotional reactions to fearful stimuli.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    ISSN: 1573-3297
    Schlagwort(e): Acoustic startle response ; habituation ; sensitization ; fear ; genetic differences
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Psychologie
    Notizen: Abstract An increase in general responsiveness after aversive stimulation has provided a most widely accepted and well-understood sensitization paradigm. According to a second paradigm (based on the dual process theory of habituation and sensitization), not only additional aversive stimuli, but also the response-eliciting stimuli themselves, induce sensitization. To relate these two sensitization paradigms, we compared the course of startle response parameters during repetitive acoustic stimulation with the change in startle amplitude after electric footshocks in outbred Wistar and Sprague–Dawley rats. Compared to the Wistar rats used, the Sprague–Dawley rats showed a lower response decrement and a shortened latency during repetitive stimulation, both of which are indicators of increased sensitization by the startle-eliciting stimuli. In addition, the Sprague–Dawley rats also demonstrated a reduced increase in startle amplitude following footshock. This was postulated to be a consequence of the strong sensitization by startle-eliciting stimuli, which interferes with sensitization elicited by footshock. Because our Wistar and Sprague–Dawley rats did not differ in initial startle amplitude, but mainly in susceptibility to sensitization, further comparisons of these genetically different stocks of rats seem to be of potential value in studying differences in fear-motivated behavior.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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