Investigation of cortical thickness and volume during spontaneous attacks of migraine without aura: a 3-Tesla MRI study

Table 2 Comparison of experimental conditions between S1 and S2 scans, and clinical phenotype of migraine attack recorded at S1

		S1 Spontaneous migraine attack	S2 Inter-ictal period	p-value
N		15	15	–
Days elapsed since last migraine attack		20.1 ± 16.3	9.3 ± 6.8	0.015
Sleep hours before MRI scan		6.8 ± 2.0	6.9 ± 1.3	0.954
Days elapsed since last menses (for female patients, N = 13)		29.1 ± 27.3	42.3 ± 49.1	0.145
Side of migraine attack during S1	Left	8 (53.3%)
Side of migraine attack during S1	Right	7 (46.7%)
Hours from migraine onset to scan		7.9 ± 3.7
NRS of migraine pain during S1		6.8 ± 2.1
Throbbing pain		14 (93.3%)
Nausea		15 (100.0%)
Vomit		2 (13.3%)
Aggravated by physical activity		13 (86.7%)
Photophobia		11 (73.3%)
Phonophobia		5 (33.3%)

Legend: S1: MRI scan performed during spontaneous migraine attack; S2: MRI scan performed during inter-ictal period; NRS: nociceptive rating scale

ISSN: 1129-2377