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Related Experiment Video

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Transauricular Vagus Nerve Stimulation and Electroencephalographic Assessment in Disorders of Consciousness
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Derealization during utricular stimulation.

C Aranda-Moreno, K Jáuregui-Renaud

    Journal of Vestibular Research : Equilibrium & Orientation
    |March 7, 2017
    PubMed
    Summary
    This summary is machine-generated.

    Stimulating the otoliths via unilateral centrifugation in healthy adults induced depersonalization/derealization symptoms. These findings suggest vestibular signals can alter sensory perception, leading to feelings of unreality.

    Keywords:
    Depersonalizationderealizationutricular maculavestibular

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    Area of Science:

    • Neuroscience
    • Vestibular System Research
    • Sensory Perception Studies

    Background:

    • Previous research linked semicircular canal stimulation to feelings of unreality.
    • The impact of otolith stimulation on depersonalization/derealization (DD) symptoms remained unexamined.

    Purpose of the Study:

    • To investigate the induction of DD symptoms through otolith stimulation via unilateral centrifugation in healthy adults.

    Main Methods:

    • 100 healthy adults completed validated questionnaires for balance, depression, anxiety, and DD symptoms.
    • Participants underwent unilateral centrifugation (300°/s at 3.5 cm).
    • The DD inventory was re-administered post-centrifugation.

    Main Results:

    • Unilateral centrifugation induced novel DD symptoms in participants, notably 'body feels strange' (56%) and 'time passes slowly' (55%).
    • Higher DD scores correlated with balance symptom scores and depression inventory scores.
    • Individual vestibular function and derealization symptom scores related to other reported DD symptoms.

    Conclusions:

    • Unilateral centrifugation effectively provokes DD symptoms in healthy individuals.
    • Distorted vestibular signals may disrupt sensory integration, causing perceptions of unreality.