Ocular torsion responses to sinusoidal electrical vestibular stimulation

Mackenzie, Stuart W.; Reynolds, Raymond F.

doi:10.1016/j.jneumeth.2017.11.012

Cited by 17 publications

(30 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Protocol – We used the protocol described by Mackenzie and Reynolds (2018b) ; “Participants were seated with the head restrained (SR Research Ltd. Ontario, Canada) for the duration of each 10 s stimulation period. Prior to each trial participants were instructed to focus on the lens of an infrared camera and not to blink before being immersed into darkness.…”

Section: Methodsmentioning

confidence: 99%

“…Data Acquisition and Analysis – We used the same analysis described by Mackenzie and Reynolds (2018b) ( Fig. 2 ); “Torsional eye movements were sampled at 50 Hz using an infrared camera (Grasshopper 3, Point Grey Research Inc, Richmond, BC, Canada).…”

Section: Methodsmentioning

confidence: 99%

“…This technique has previously been validated across stimulation frequency range of 0.05–20 Hz ( Mackenzie and Reynolds, 2018b ). Nystagmus fast phases were automatically identified and removed ( Mackenzie and Reynolds, 2018b ). The magnitude of the eye response was measured as the peak value of the stimulus-response cross-correlation.…”

Section: Methodsmentioning

confidence: 99%

“…2 Analysis of EVS-evoked ocular responses. Adapted from Mackenzie and Reynolds (2018b) . (A) Subjects sat in darkness with the head fixed during 10 s EVS stimuli (2 Hz, ±2 mA), delivered in a monaural configuration.…”

Section: Methodsmentioning

confidence: 99%

“…EVS also activates the vestibular-ocular reflex. The evoked eye movement is primarily torsional, with minimal lateral or vertical component ( Schneider et al, 2002 , Jahn et al, 2003a , Jahn et al, 2003b , Severac Cauquil et al, 2003 , MacDougall et al, 2005 , Mackenzie and Reynolds, 2018b ).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Ocular torsion responses to electrical vestibular stimulation in vestibular schwannoma

Mackenzie

Irving

Monksfield

et al. 2018

Clinical Neurophysiology

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ocular torsion responses to electrical vestibular stimulation in vestibular schwannoma

Mackenzie

Irving

Monksfield

et al. 2018

Clinical Neurophysiology

Self Cite

View full text Add to dashboard Cite

show abstract

Vestibular Extremely Low‐Frequency Magnetic and Electric Stimulation Effects on Human Subjective Visual Vertical Perception

Bouisset

Villard

Legros

2022

Bioelectromagnetics

View full text Add to dashboard Cite

Electric fields from both extremely low-frequency magnetic fields (ELF-MF) and alternating current (AC) stimulations impact human neurophysiology. As the retinal photoreceptors, vestibular hair cells are graded potential cells and are sensitive to electric fields. Electrophosphene and magnetophosphene literature suggests different impacts of AC and ELF-MF on the vestibular hair cells. Furthermore, while AC modulates the vestibular system more globally, lateral ELF-MF stimulations could be more utricular specific. Therefore, to further address the impact of ELF-MFinduced electric fields on the human vestibular system and the potential differences with AC stimulations, we investigated the effects of both stimulation modalities on the perception of verticality using a subjective visual vertical (SVV) paradigm. For similar levels of SVV precision, the ELF-MF condition required more time to adjust SVV, and SVV variability was higher with ELF-MF than with AC vestibular-specific stimulations. Yet, the differences between AC and ELF-MF stimulations were small. Overall, this study highlights small differences between AC and ELF-MF vestibular stimulations, underlines a potential utricular contribution, and has implications for international exposure guidelines and standards. Bioelectromagnetics. 43:355-367, 2022

show abstract

Is activation of the vestibular system by electromagnetic induction a possibility in an MRI context?

Bouisset,

Nissi,

Laakso

et al. 2024

Bioelectromagnetics

Self Cite

View full text Add to dashboard Cite

In recent years, an increasing number of studies have discussed the mechanisms of vestibular activation in strong magnetic field settings such as occur in a magnetic resonance imaging scanner environment. Amid the different hypotheses, the Lorentz force explanation currently stands out as the most plausible mechanism, as evidenced by activation of the vestibulo‐ocular reflex. Other hypotheses have largely been discarded. Nonetheless, both human data and computational modeling suggest that electromagnetic induction could be a valid mechanism which may coexist alongside the Lorentz force. To further investigate the induction hypothesis, we provide, herein, a first of its kind dosimetric analysis to estimate the induced electric fields at the vestibular system and compare them with what galvanic vestibular stimulation would generate. We found that electric fields strengths from induction match galvanic vestibular stimulation strengths generating vestibular responses. This review examines the evidence in support of electromagnetic induction of vestibular responses, and whether movement‐induced time‐varying magnetic fields should be further considered and investigated.

show abstract

Ocular torsion responses to sinusoidal electrical vestibular stimulation

Cited by 17 publications

References 24 publications

Ocular torsion responses to electrical vestibular stimulation in vestibular schwannoma

Ocular torsion responses to electrical vestibular stimulation in vestibular schwannoma

Vestibular Extremely Low‐Frequency Magnetic and Electric Stimulation Effects on Human Subjective Visual Vertical Perception

Is activation of the vestibular system by electromagnetic induction a possibility in an MRI context?

Contact Info

Product

Resources

About