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Typus
Verschleierung
Bearbeiter
Hindemith
Gesichtet
Yes.png
Untersuchte Arbeit:
Seite: 6, Zeilen: 1-20
Quelle: Granz 2009
Seite(n): 9, Zeilen: 11-17, 25-34
During periods with no visual stimulation, but while the subject was experiencing scintillations, BOLD signal followed the retinotopic progression of the visual percept. Spreading BOLD signal changes as CSD did not cross prominent sulci (Hadjikhani et al., 2001). In line with these data, magnetoencephalographic studies in human revealed that the magnetic signals were seen in migraine patients but not in patients suffering from other forms of headache or normal controls. Three distinctive signal patterns; suppression of spontaneous cortical activity, slow field changes and large-amplitude waves, were observed strictly in migraine patients. In some patients with migraine, magnetic signals were also recorded between attacks. The same magnetic fields appeared during the propagation of SD in the cortex of anesthetized animals (Welch et al, 1993). The most common symptoms during the aura phase in migraine are visual. As mentioned, spreading oligemia and excitation wave of aura symptoms start in occipital lobe and propagates anteriorly. Altering the ionic makeup of the extracellular fluid reversibly raises or lowers the susceptibility to SD. Glial cells act as spatial buffer especially for potassium by taking potassium up and carrying it from regions of high concentration to neighbouring areas of low concentration. Regarding anatomical studies in human, the lowest glial–neuronal ratio is in the primary visual cortex (Fig. 2; Gorji, 2001). Magnetoencephalographic studies in human revealed that the magnetic signals were seen in migraine patients but not in patients suffering from other forms of headache or normal controls. Three distinctive signal patterns; suppression of spontaneous cortical activity, slow field changes and large-amplitude waves, were observed strictly in migraine patients. In some patients with migraine, magnetic signals were also recorded between attacks. The same magnetic fields appeared during the propagation of SD in the cortex of anesthetized animals (Welch et al, 1993). [...] During periods with no visual stimulation, but while the subject was experiencing scintillations, BOLD signal followed the retinotopic progression of the visual percept. Spreading BOLD signal changes as CSD did not cross prominent sulci (Hadjikhani et al., 2001). The most common symptoms during the aura phase in migraine are visual. As mentioned, spreading oligemia and excitation wave of aura symptoms start in occipital lobe and propagate anteriorly. Altering the ionic makeup of the extracellular fluid reversibly raises or lowers the susceptibility to SD. Glial cells act as spatial buffer explicitly for potassium by taking potassium up and carrying it from regions of high concentration to neighbouring regions of low concentration. In human the lowest glial neuronal ratio is in the primary visual cortex (Fig. 2; Gorji, 2001).
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Sichter
(Hindemith) Schumann

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