Table 2.

Comparison of previous brain morphometry studies on vestibular dysfunction and results in this study.

Study	Number of patients	Number of healthy controls	Method	Main Finding Hippocampus	Agreement with our Findings
Brandt et al., 2005	10	10	Manual	Volume loss	No
Göttlich et al., 2016	27	29	VBM SPM12	No change	Yes
Kremmyda et al., 2016	15	15	VBM SPM8	Volume loss mid-hippocampus	–
Cutfield et al., 2014	12	15	VBM FSL	No change	Yes
van Cruijsen et al., 2007	10	10	Manual	No change	Yes
zu Eulenburg et al., 2010	22	22	VBM SPM5	Decreased intensities left posterior hippocampus	–
Seo et al., 2016	38	76	Manual	Volume loss	No
Hüfner et al., 2007	16	16	Manual / VBM SPM21	No change	Yes
Hüfner et al., 2009	16	16	VBM SPM2	No change	Yes
Helmchen et al., 2009	15	15	VBM SPM2	No change	Yes
Helmchen et al., 2010	15	15	VBM SPM2	No change	Yes
Hong et al., 2014	9	–	VBM SPM8	−2	–
This Study	55	39	FreeSurfer 6

¹ Manual tracing of hippocampus / SPM2 for cortex.

² Longitudinal study, no comparison to healthy control group.