Fig. 4From: Acute sleep deprivation enhances susceptibility to the migraine substrate cortical spreading depolarizationCSD threshold and frequency in VLPO-lesioned rats. Electrical CSD threshold (a) and CSD frequency upon topical continuous KCl (b) were not altered in rats after chronic sleep deprivation, 6 or 12 weeks after lesioning of the ventrolateral preoptic nucleus. The x-axis indicates the number of intact VLPO neurons after the lesioning procedure. The number of VLPO neurons for sham animals was set to > 800Back to article page