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  • Cluster headache  (1)
  • Ulbricht effect  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Documenta ophthalmologica 65 (1987), S. 343-348 
    ISSN: 1573-2622
    Schlagwort(e): focal electroretinogram ; macular disease ; stray light ; Ulbricht effect
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract A technique for the simultaneous recording of two small-field electroretinograms (ERGs), macular and paramacular, employing standard apparatuses for stimulation and analysis is described. The stimuli consisted of two adjacent checks (6 deg/side) obtained by masking the display of a commercially available TV pattern stimulator. The checks were square-wave-modulated in counterphase at 3.12 Hz. The subjects fixated the center of one of two checks. In one stimulus cycle, two ERGs could be distinguished: one from the macular area and the other from the adjacent area. The macular ERG is about twice as large as the paramacular. ERGs recorded by this technique can be considered focal since (i) they show a sharp fall-off in amplitude when the stimulus is displaced from the fovea, and (ii) they are no longer recordable when the stimulus is centered on the optic disk or on a large macular scar.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1590-3478
    Schlagwort(e): Cluster headache ; bypass surgery
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Sommario A distanza di oltre due anni da un intervento di bypass tra aorta ascendente ed arteria anonima un uomo di 51 anni con cefalea a grappolo non ha più riferito ulteriori episodi algici. Viene avanzata l'ipotesi che l'intervento abbia svolto un ruolo causale nella remissione di tali episodi.
    Notizen: Abstract A 51-year-old man with cluster headache has been free from cluster attacks for over two years following ascending aorta/innominate artery bypass surgery for correction of an atherosclerotic narrowing at the origin of the innominate artery. Surgery may have been a causal factor in the remission of these attacks.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
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