Different modulation effects of 1 Hz and 20 Hz transcutaneous auricular vagus nerve stimulation on the functional connectivity of the periaqueductal gray in patients with migraine

Table 1 Demographic and clinical assessments

Demographic
Participant count	24
Sex (female/male)	21/ 3
Age (mean ± SE, yrs)	31.33 ± 1.55
Clinical assessments
Migraine duration (mean ± SE, yrs)	8.68 ± 1.47
Migraine attacks (mean ± SE)	1.67 ± 0.25 (ranging from 1 to 5)
VAS (mean ± SE)	38.60 ± 3.30
MSQ (mean ± SE)	74.83 ± 1.90
SDS (mean ± SE)	42.14 ± 1.82
SAS (mean ± SE)	39.69 ± 1.85

Migraine attacks assessed attack times during the past 4 weeks. The VAS assessed the average migraine intensity of the 4 weeks preceding the first MRI scan. The MSQ, SDS, SAS were assessed preceding the first MRI scan
VAS visual analog scale, MSQ Migraine Specific Quality of Life, SDS Self-rating Depression Scale, SAS Self-rating Anxiety Scale

ISSN: 1479-5876