ArticleNeuroImage2022
Persistent horizontal and vertical, MR-induced nystagmus in resting state Human Connectome Project data.
Article in NeuroImage, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Sustained bias of spatial attention in a 3 T MRI scanner.Scientific reports · 2024Article
- Cone-Driven, Geniculocortical Responses in Canine Models of Outer Retinal Disease.Translational vision science & technology · 2024Article
- Cone-driven, geniculo-cortical responses in canine models of outer retinal disease.bioRxiv : the preprint server for biology · 2023Article
- Magnetic field, nystagmus and serendipity.Acta otorhinolaryngologica Italica : organo ufficiale della Societa italiana di otorinolaringologia e chirurgia cervico-facciale · 2023Article
- Longer duration entry mitigates nystagmus and vertigo in 7-Tesla MRI.Frontiers in neurology · 2023Article
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Authors and funding
9 authors.
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Abstract
objectiveStrong magnetic fields from magnetic resonance (MR) scanners induce a Lorentz force that contributes to vertigo and persistent nystagmus. Prior studies have reported a predominantly horizontal direction for healthy subjects in a 7 Tesla (T) MR scanner, with slow phase velocity (SPV) dependent on head orientation. Less is known about vestibular signal behavior for subjects in a weaker, 3T magnetic field, the standard strength used in the Human Connectome Project (HCP). The purpose of this study is to characterize the form and magnitude of nystagmus induced at 3T.
methodsForty-two subjects were studied after being introduced head-first, supine into a Siemens Prisma 3T scanner. Eye movements were recorded in four separate acquisitions over 20 min. A biometric eye model was fitted to the recordings to derive rotational eye position and then SPV. An anatomical template of the semi-circular canals was fitted to the T2 anatomical image from each subject, and used to derive the angle of the B
resultsRecordings from 37 subjects yielded valid measures of eye movements. The population-mean SPV ± SD for the horizontal component was -1.38 ± 1.27 deg/sec, and vertical component was -0.93 ± 1.44 deg/sec, corresponding to drift movement in the rightward and downward direction. Although there was substantial inter-subject variability, persistent nystagmus was present in half of subjects with no significant adaptation over the 20 min scanning period. The amplitude of vertical drift was correlated with the roll angle of the vestibular system, with a non-zero vertical SPV present at a 0 degree roll.
interpretationNon-habituating vestibular signals of varying amplitude are present in resting state data collected at 3T.
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