Illusory self-motion perception evoked by caloric vestibular stimulation in sitting versus supine body positions

Kolev, Ognyan I.; Georgieva-Zhostova, Spaska

doi:10.1016/j.bbr.2014.06.051

Cited by 4 publications

(4 citation statements)

References 52 publications

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“…An additional somatosensory signal which needs to be considered when seeking to explain threshold lowering is that caused by centrifugal force in the legs during rotation. It is also necessary to mention an interesting recent finding (Kolev and Georgieva-Zhostova, 2014) which supports the somatosensory hypothesis as an explanation for the perceptual threshold difference in roll (present results) compared with yaw rotation (Kolev and Nicoucar, 2014): a difference in self-motion illusions (evoked by caloric vestibular stimulation) between vertical and supine body position, while the subject's head remains unchanged with respect to the gravity vector (i.e. the vestibular afferentation remains the same) (Kolev and Georgieva-Zhostova, 2014).…”

Section: Discussionmentioning

confidence: 75%

“…It is also necessary to mention an interesting recent finding (Kolev and Georgieva-Zhostova, 2014) which supports the somatosensory hypothesis as an explanation for the perceptual threshold difference in roll (present results) compared with yaw rotation (Kolev and Nicoucar, 2014): a difference in self-motion illusions (evoked by caloric vestibular stimulation) between vertical and supine body position, while the subject's head remains unchanged with respect to the gravity vector (i.e. the vestibular afferentation remains the same) (Kolev and Georgieva-Zhostova, 2014). Finally, it is important to note that the phenomenon described -the lowering of the perceptual threshold for self-motion in visual-vestibular conflict conditionscould potentially be of practical benefit in the clinic.…”

Section: Discussionmentioning

confidence: 99%

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Thresholds for self-motion perception in roll without and with visual fixation target - the visualvestibular interaction effect

Kolev¹

2015

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SummaryThe purpose of this study was to establish the selfmotion perception threshold, in roll, in the visualvestibular interaction (VVI) state, creating an oculogyral illusion, and to compare this threshold to the self-motion perception threshold in darkness. A further aim was to investigate the dynamics of the threshold at a low frequency range (0.1-1 Hz) of sinusoidal rotation. Seven healthy subjects were tested. A motion platform was used to generate motion. Single cycles of sinusoidal acceleration at four frequencies (0.1, 0.2, 0.5 and 1 Hz) were used as motion stimuli. To avoid otolith stimulation, subjects were rotated about a vertical axis in supine position. To evoke an oculogyral illusion subjects were instructed to fixate their gaze on a cross-shaped object aligned with their head, which rotated with them. The results show a lowering of the self-motion perception threshold in the VVI state, significant for the frequencies 0.1 and 0.2 Hz (p<0.05). In all the subjects, visual fixation on the cross evoked an oculogyral illusion. The threshold in both tested conditions was frequency dependent: it decreased with increasing frequency values. However, this effect was consistently stronger in darkness across all frequencies (p<0.05). In conclusion, the application of sinusoidal rotation during roll at low frequencies in the VVI condition evokes oculogyral illusion. This interaction lowers the self-motion perception threshold compared to that measured during rotation in darkness. This testing method could be of practical benefit in clinical application for revealing brain dysfunction involving integrative mechanisms of perception.

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Section: Discussionmentioning

confidence: 75%

Section: Discussionmentioning

confidence: 99%

Thresholds for self-motion perception in roll without and with visual fixation target - the visualvestibular interaction effect

Kolev¹

2015

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“…Self- and environmental-motion perceptions were investigated in different aspects using either vestibular—caloric or rotational, or visual stimuli [e.g., (11–14, 16–21, 23)]. When thresholds for motion were studied mostly sinusoidal visual and vestibular stimuli were used.…”

Section: Discussionmentioning

confidence: 99%

“…The search in the literature shows that there are very few publications in this field (11–20) which are mostly focused on self-motion perception. An earlier study on illusory self-motion perception shows that it significantly varies when strong unilateral caloric vestibular stimulation is applied in healthy humans (12, 21). However in the study the illusory environmental-motion perception was not investigated.…”

Section: Introductionmentioning

confidence: 99%

Self-Motion Versus Environmental-Motion Perception Following Rotational Vestibular Stimulation and Factors Modifying Them

Kolev

2019

Front. Neurol.

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Motion perception following rotational vestibular stimulation is described either as a self-motion or as an environmental-motion. The purpose of the present study was to establish frequency of occurrence of both sensations in healthy humans; what other sensations they experience and how factors insinuation and visual cues modify them. Twenty-four healthy subjects were rotated with constant velocity of 80°/s in four combinations of opened and closed eyes during the rotation and after a sudden stop. After the cessation of the rotation they reported their spontaneous or insinuated illusory motion. During spontaneous perception after sudden cessation of rotation and with the subject's eyes open, the illusory sensations of self- and environmental-motion were almost equally presented. There was no simultaneous illusory perception of self-motion and environmental-motion. Insinuation modified the perception of motion; presence or absence of visual cues prior to the cessation of the rotation and the presence or absence of visual cues immediately after the cessation of the rotation changed the motion sensation. There is a gender effect in motion perception. This finding might be of benefit in further exploring the gender difference in the susceptibility to motion sickness.

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Linear Vertigo in Benign Paroxysmal Positional Vertigo: Prevalence and Mechanism

et al. 2020

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Illusory self-motion perception evoked by caloric vestibular stimulation in sitting versus supine body positions

Cited by 4 publications

References 52 publications

Thresholds for self-motion perception in roll without and with visual fixation target - the visualvestibular interaction effect

Thresholds for self-motion perception in roll without and with visual fixation target - the visualvestibular interaction effect

Self-Motion Versus Environmental-Motion Perception Following Rotational Vestibular Stimulation and Factors Modifying Them

Linear Vertigo in Benign Paroxysmal Positional Vertigo: Prevalence and Mechanism

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