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Typus
KomplettPlagiat
Bearbeiter
Graf Isolan
Gesichtet
Yes.png
Untersuchte Arbeit:
Seite: 9, Zeilen: 4-25
Quelle: Gorji 2001
Seite(n): 34, 35, 36, Zeilen: 34:right col. 33-41; 35: right col. 35-44; 36:left col. 43ff - right col. 1-4
The designation migraine with aura denotes the syndrome of headache associated with characteristic sensory, motor, or visual symptoms, usually gradually developed over 5–20 min and lasting less than 60 min. The most common symptoms in aura phase are visual arising from dysfunction of occipital lobe neurons. The positive (stimulative) neurological symptoms, e.g., flashing lights are usually followed by negative (suppressive) ones, e.g., scotoma or hemianopia in this phase. 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 migraine patients, magnetic signals were also recorded between attacks. The same magnetic fields appeared during the propagation of SD in the cortex of anesthetized animals. High-field functional MRI was used to detect blood oxygenation level-dependent (BOLD) changes during visual aura in three migraineurs. A focal increase in BOLD signals developed first in extrastriate cortex and spread at the velocity of 3.5 ± 1.1 mm/min over occipital cortex. These initial BOLD features were consistent with scintillations and paralleled by decreases in the stimulus-driven MR oscillations. Increasing in BOLD signals was followed by a decrease in the mean signal. This phase appeared to correspond to the localized scotoma and MR stimulus-induced response remained suppressed. Within 15 ± 3 min, both BOLD signals and MR stimulus-induced response recovered. 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 neocortical SD did not cross prominent sulci. [page 34]

The designation migraine with aura denotes the syndrome of headache associated with characteristic sensory, motor, or visual symptoms, usually gradually developed over 5–20 min and lasting less than 60 min. The most common symptoms in aura phase are visual arising from dysfunction of occipital lobe neurons. The positive (stimulative) neurological symptoms, e.g., flashing lights are usually followed by negative (suppressive) ones, e.g., scotoma or hemianopia in this phase.

[page 35]

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 migraineurs, magnetic signals were also recorded between attacks. The same magnetic fields appeared during the propagation of SD in the cortex of anesthetized animals [455].

[page 36]

High-field functional MRI was used to detect blood oxygenation level-dependent (BOLD) changes during visual aura in enhanced in three migraineurs. A focal increase in BOLD signals developed first in extrastriate cortex and spread at the velocity of 3.5 ± 1.1 mm/min over occipital cortex. These initial BOLD features were consistent with scintillations and paralleled by decreases in the stimulus-driven MR oscillations. Increasing in BOLD signals was followed by a decrease in the mean MR signal. This phase appeared to correspond to the localized scotoma and MR stimulus-induced response remained suppressed. Within 15 ± 3 min, both BOLD signals and MR stimulus-induced response recovered. 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 [162].


[...]

Anmerkungen

Not marked as a citation, the source is not mentioned.

Sichter
(Graf Isolan), Hindemith

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