Table 5. Laboratory findings of the patients.

Tests	n	Positive results	Negative results
Brain MRI	33	33	0
Spinal MRI	29	2	27
CSF OCB	20	12	8
Aquaporin-4	2	0	2
VEP	16	12	4
SEP	12	5	7
BAEP	12	6	6

BAEP: brainstem auditory evoked potential, CSF: cerebrospinal fluid, MRI: magnetic resonance imaging, OCB: oligoclonal band, SEP: somatosensory evoked potential, VEP: visual evoked potential.