Cephalic Vascular Recording Upon SPG Stimulation
Stimulation of the SPG at high frequencies (50-200Hz) is believed to cause a physiological parasympathetic block which decreases VMCA oxyHb concentration and cephalic vessel diameter.
Stimulation of the SPG at low frequencies (1-60 Hz)is believed to cause a physiological parasympathetic upregulation which increases VMCA, oxyHb concentration and cephalic vessel diameter.
|Chronic Cluster Headache|
|Study Design:||Observational Model: Case-Only
Time Perspective: Prospective
|Official Title:||Cephalic Vascular Recording Upon SPG Stimulation in CH Patients - Amendment to the Pathway CH-1 Trial|
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