Visual-vestibular mismatch correlates with headache

Al-Sharif, Doaa S.; Roehm, Pamela C.; Lindemann, Timothy L.; Dumenci, Lèvent; Keshner, Emily A.

doi:10.3233/ves-201539

Cited by 9 publications

(9 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In VM patients, our results indicate that the %CA was normal in most of the subjects, and only when using the optokinetic stimulation did this parameter strongly decrease (with no difference between the two sides) not only with respect to the control group but also in comparison with the AUV group, showing that visual dependence is the cause of the decay in the responses when the background is in motion. Recently, Al-Sharif et al [32] studied the effects of visual-vestibular mismatch using a specific questionnaire and a computerized rod and frame test; they reported that the presence of VD was significantly higher in patients suffering from headache and dizziness than in subjects with headache only. Visual dependence was measured as the error to a subjective visual vertical using a computerized rod and frame test.…”

Section: Discussionmentioning

confidence: 99%

The Role of the Functional Head Impulse Test with and without Optokinetic Stimuli in Vestibular Migraine and Acute Unilateral Vestibulopathy: Discovering a Dynamic Visual Dependence

Casani¹,

Lazzerini²,

Marconi³

et al. 2021

JCM

View full text Add to dashboard Cite

(1) Background: Visually induced vertigo (i.e., vertigo provoked by moving visual scenes) can be considered a noticeable feature of vestibular migraines (VM) and can be present in patients suffering from acute unilateral vestibulopathy (AUV). Hypersensitivity to moving or conflicting visual stimulation is named visual dependence. (2) Methods: Visuo-vestibular interactions were analyzed via the functional Head Impulse Test (fHIT) with and without optokinetic stimulation (o-fHIT) in 25 patients with VM, in 20 subjects affected by AUV, and in 20 healthy subjects. We calculated the percentage of correct answers (%CA) without and with the addition of the optokinetic background (OB). (3) In VM groups, the %CA on the fHIT was 92.07% without OB and 73.66% with OB. A significant difference was found between %CA on the deficit side and that on the normal side in AUV, both without OB and with OB. (4) Conclusions: The fHIT results in terms of %CA with and without OB could be useful to identify the presence of a dynamic visual dependence, especially in patients suffering from VM. The difference in %CA with and without OB could provide instrumental support to help correctly identify subjects suffering from VM. We propose the use of the fHIT in clinical practice whenever there is a need to highlight a condition of dynamic visual dependence.

show abstract

Section: Discussionmentioning

confidence: 99%

The Role of the Functional Head Impulse Test with and without Optokinetic Stimuli in Vestibular Migraine and Acute Unilateral Vestibulopathy: Discovering a Dynamic Visual Dependence

Casani¹,

Lazzerini²,

Marconi³

et al. 2021

JCM

View full text Add to dashboard Cite

show abstract

“…In VM patients our results indicate that the %CA is normal in most of the subjects and only using the optokinetic stimulation this parameter strongly decrease (with no difference between the two sides) in respect not only to the control group but also in comparison with the AUV group showing that visual dependence is the cause of the decay of the responses when the background is in motion. Recently, Al-Sharif et al [30] studied the effects of visual-vestibular mismatch using a speci c questionnaire and a computerized Rod and Frame test; they reported that the presence of VD is signi cantly higher in patients suffering from headache and dizziness than in subjects with headache only. Our results are in line with this observation indicating a very important role of the vestibular involvement in VM causing a di culty in resolving con icting visuo-vestibular signals, as demonstrated by the signi cant difference in delta CS between our three group of subjects.…”

Section: Discussionmentioning

confidence: 99%

The Role of Functional Head Impulse Test With and Without Optokinetic Stimuli in Vestibular Migraine and Acute Unilateral Vestibulopathy: Discovering a Visual Dependence?

Lazzerini

Ducci

et al. 2021

Preprint

View full text Add to dashboard Cite

Visually induced vertigo (i.e., vertigo provoked by moving visual scenes) could be considered as a noticeable feature of Vestibular Migraine (VM) and could be present in patients suffering from Acute Unilateral Vestibulophaty (AUV). The hypersensitivity to moving or conflicting visual stimulations is named Visual Dependence. The visuo-vestibular interactions were analyzed using functional Head Impulse Test (fHIT) with and without optokinetic stimulation (o-fHIT) in 25 patients with VM and 20 subjects affected by AUV. We calculated the percentage of correct answer (%CA) without and with the addition of confounding screen (CS). In VM groups the %CA at fHIT was 92,07% without CS and 73,66% with CS. A significant difference has been found between %CA on the deficit side and the normal side in AUV, both without CS and with CS). The results of fHIT in term of %CA with and without CS could be very useful to identify the presence of visual dependence especially in patients suffering from VM. The difference of %CA with and without CS could provide an instrumental support to correctly identify patients with VM. We propose the use of fHIT in clinical practice whenever there is a need to highlight a condition of visual dependence.

show abstract

“…The presence of visual dependency was confirmed with a Rod and Frame test (RFT) available on the PosturoVR 0.8.3 software (Virtualis, France) and projected on to the Oculus Rift [8]. At the beginning of each trial, the virtual rod was set randomly at a 45 deg angle to the left or right.…”

Section: Self-reported Outcomes Measuresmentioning

confidence: 99%

“…Differences in demographics and clinical outcome scores between the + VVM and −VVM groups were assessed using Welch's t-test. Individuals were assigned positive or negative results on the RFT based on the criterion of an angle of deviation greater than 5 deg to indicate visual dependency [8].…”

Section: Postural Acceleration Measuresmentioning

confidence: 99%

“…Our prior research revealed that a large proportion of individuals diagnosed with vestibular migraine also test positive for VVM (57%) and visual dependency (42%) [8]. A strong association between dizziness, visual dependence, and VVM implies that dysfunction in the autonomic nervous system (ANS) might be contributing to these orientation disorders [9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The effects of visual context on visual-vestibular mismatch revealed by electrodermal and postural response measures

Al-Sharif

Tucker

Coffman

et al. 2022

J NeuroEngineering Rehabil

Self Cite

View full text Add to dashboard Cite

Background No objective criteria exist for diagnosis and treatment of visual-vestibular mismatch (VVM). Objective To determine whether measures of electrodermal activity (EDA) and trunk acceleration will identify VVM when exposed to visual-vestibular conflict. Methods A modified VVM questionnaire identified the presence of VVM (+ VVM) in 13 of 23 young adults (34 ± 8 years) diagnosed with vestibular migraine. Rod and frame tests and outcome measures for dizziness and mobility were administered. Participants stood on foam while viewing two immersive virtual environments. Trunk acceleration in three planes and electrodermal activity (EDA) were assessed with wearable sensors. Linear mixed effect (LME) models were used to examine magnitude and smoothness of trunk acceleration and tonic and phasic EDA. Welch’s t-test and associations between measures were assessed with a Pearson Correlation Coefficient. Effect sizes of group mean differences were calculated. Results Greater than 80% of all participants were visually dependent. Outcome measures were significantly poorer in the + VVM group: tonic EDA was lower (p < 0.001) and phasic EDA higher (p < 0.001). Postural accelerations varied across groups; LME models indicated a relationship between visual context, postural, and ANS responses in the + VVM group. Conclusions Lower tonic EDA with + VVM suggests canal-otolith dysfunction. The positive association between vertical acceleration, tonic EDA, and visual dependence suggests that increased vertical segmental adjustments are used to compensate. Visual context of the spatial environment emerged as an important control variable when testing or treating VVM.

show abstract

Visual-vestibular mismatch correlates with headache

Cited by 9 publications

References 37 publications

The Role of the Functional Head Impulse Test with and without Optokinetic Stimuli in Vestibular Migraine and Acute Unilateral Vestibulopathy: Discovering a Dynamic Visual Dependence

The Role of the Functional Head Impulse Test with and without Optokinetic Stimuli in Vestibular Migraine and Acute Unilateral Vestibulopathy: Discovering a Dynamic Visual Dependence

The Role of Functional Head Impulse Test With and Without Optokinetic Stimuli in Vestibular Migraine and Acute Unilateral Vestibulopathy: Discovering a Visual Dependence?

The effects of visual context on visual-vestibular mismatch revealed by electrodermal and postural response measures

Contact Info

Product

Resources

About