Fig. 1From: Cortical and subcortical changes following sphenopalatine ganglion blocks in chronic migraine with medication overuse headache: a preliminary longitudinal studySubcortical structures exhibiting morphometric changes over the course of a 6-week SPG treatment. Volume significantly decreased in the hippocampus (yellow) and palladium (blue), and increased in the nucleus accumbens (orange)Back to article page