Figure 1From: Sleep-related and non-sleep-related migraine: interictal sleep quality, arousals and pain thresholds Pressure pain thresholds and amount of slow wave sleep (SWS) in sleep related migraine (SM, solid line) and non-sleep related migraine (NSM, dotted line). Less N3 sleep was significantly associated with high pressure pain thresholds in the NSM group (age adjusted r = -0.50. p < 0.05).Back to article page