Optimizing Noisy Galvanic Vestibular Stimulation Frequency Range for Enhancing Vestibular Perception and Manual Control Performance
Assessments of Performance in Healthy Control Subjects
Обзор исследования
Статус
Статус
Условия
Условия
Вмешательство/лечение
Вмешательство/лечение
Подробное описание
Тип исследования
Тип исследования
Регистрация (Действительный)
Регистрация
Фаза
Фаза
- Непригодный
Контакты и местонахождение
Места учебы
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Texas
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Houston, Texas, Соединенные Штаты, 77058
- Nasa Jsc B21
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Критерии участия
Критерии приемлемости
Критерии приемлемости
Возраст, подходящий для обучения
- Взрослый
- Пожилой взрослый
Принимает здоровых добровольцев
Описание
Inclusion Criteria:
- Subjects were required to pass a physical exam adminisitrated by NASA JSC Clinic.
Exclusion Criteria:
- No history of neurologic, vestibular, or autonomic disease.
Учебный план
Как устроено исследование?
Детали дизайна
- Основная цель: Фундаментальная наука
- Распределение: Рандомизированный
- Интервенционная модель: Назначение кроссовера
- Маскировка: Одинокий
Количество рук
Оружие и интервенции
Группа участников / АрмияГруппа участников / Армия |
Вмешательство/лечениеВмешательство/лечение |
|---|---|
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Без вмешательства: Control - No noisy galvanic vestibular stimulation
Participants completed testing without noisy galvanic vestibular stimulation.
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Экспериментальный: Low-frequency noisy galvanic vestibular stimulation
Participants received low-frequency noisy galvanic vestibular stimulation during testing.
Low frequency was 0-2 Hz.
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Participants received low-frequency noisy galvanic vestibular stimulation through electrodes placed over the bilateral mastoid processes during experimental testing.
Stimulation parameters were consistent with the approved study protocol.
Frequency was 0-2Hz white noise, 300uA amplitude.
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Экспериментальный: High-frequency noisy galvanic vestibular stimulation
Participants received high-frequency noisy galvanic vestibular stimulation during testing.
High-frequency was 10-30 Hz.
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Participants received high-frequency noisy galvanic vestibular stimulation through electrodes placed over the bilateral mastoid processes during experimental testing.
Stimulation parameters were consistent with the approved study protocol.
Frequency was 10-30Hz white noise, 300uA amplitude.
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Что измеряет исследование?
Первичные показатели результатов
Первичные показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
|
Vestibular Direction Recognition Threshold
Временное ограничение: Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
|
Vestibular perceptual sensitivity was assessed using roll-tilt and interaural translation direction recognition tasks performed on a six-degree-of-freedom motion platform.
Direction recognition thresholds were estimated from participant responses using an adaptive three-down, one-up staircase procedure and cumulative Gaussian psychometric curve fitting.
Lower threshold values indicate greater vestibular sensitivity and improved perception of self-motion.
|
Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
|
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Perceptual Motion Tracking Accuracy
Временное ограничение: Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
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Perceptual motion tracking performance was evaluated during continuous pseudorandom roll motion.
Participants used a joystick to continuously indicate their perceived direction and magnitude of platform motion.
Performance was quantified using the root mean square error (RMSE) between joystick responses and the programmed motion stimulus, with lower RMSE values indicating more accurate perception and tracking of self-motion.
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Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
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Manual Control Nulling Accuracy
Временное ограничение: Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
|
Manual control performance was evaluated during continuous pseudorandom roll motion while participants used a joystick to actively minimize platform motion by generating corrective control inputs.
Performance was quantified using the root mean square error (RMSE) between the platform tilt angle and the upright position over time.
Lower RMSE values indicate more effective manual control and disturbance rejection.
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Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
|
Вторичные показатели результатов
Вторичные показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
|
Roll-Tilt Vestibular Direction Recognition Threshold
Временное ограничение: Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
|
Vestibular perceptual threshold for roll-tilt motion was measured using a computerized three-down, one-up adaptive staircase procedure during a 1 Hz sinusoidal motion stimulus.
Thresholds were estimated by fitting a cumulative Gaussian psychometric function to participants' left/right direction recognition responses.
Lower threshold values indicate greater vestibular sensitivity.
|
Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
|
|
Interaural Translation Vestibular Direction Recognition Threshold
Временное ограничение: Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
|
Vestibular perceptual threshold for interaural translation motion was measured using a computerized three-down, one-up adaptive staircase procedure during a 1 Hz sinusoidal motion stimulus.
Thresholds were estimated by fitting a cumulative Gaussian psychometric function to participants' left/right direction recognition responses.
Lower threshold values indicate greater vestibular sensitivity.
|
Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
|
|
Vestibular Direction Recognition Bias
Временное ограничение: Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
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Response bias during the vestibular direction recognition task was estimated from the mean of the cumulative Gaussian psychometric function.
Bias represents the stimulus magnitude at which participants were equally likely to perceive motion in either direction, providing a measure of systematic perceptual offset.
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Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
|
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Perceptual Motion Tracking Variability
Временное ограничение: Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
|
Variability of perceptual motion tracking performance during continuous pseudorandom roll motion.
Tracking variability was quantified using statistical measures including standard deviation and variance of tracking performance, providing an assessment of the consistency and precision of participant responses.
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Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
|
|
Manual Control Nulling Variability
Временное ограничение: Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
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Variability of manual control performance during the nulling task was quantified using standard deviation, variance, and mean absolute deviation of chair tilt relative to the upright position.
These measures assessed the consistency and precision of participants' ability to minimize platform motion.
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Day 1 (single study visit): Participants completed outcome assessments during each randomized intervention condition (No nGVS, Low-Frequency nGVS, and High-Frequency nGVS). Each assessment required approximately 5 minutes to complete.
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Соавторы и исследователи
Спонсор
Спонсор
Следователи
Следователи
- Главный следователь: Scott J Wood, PhD, National Aeronautics and Space Administration (NASA)
Даты записи исследования
Изучение основных дат
Начало исследования (Действительный)
Начало исследования
Первичное завершение (Действительный)
Первичное завершение
Завершение исследования (Действительный)
Завершение исследования
Даты регистрации исследования
Первый отправленный
Первый отправленный
Впервые представлено, что соответствует критериям контроля качества
Впервые представлено, что соответствует критериям контроля качества
Первый опубликованный (Действительный)
Первый опубликованный
Обновления учебных записей
Последнее опубликованное обновление (Действительный)
Последнее опубликованное обновление
Последнее отправленное обновление, отвечающее критериям контроля качества
Последнее отправленное обновление, отвечающее критериям контроля качества
Последняя проверка
Последняя проверка
Дополнительная информация
Термины, связанные с этим исследованием
Другие идентификационные номера исследования
Другие идентификационные номера исследования
- eIRB Study 0530
Планирование данных отдельных участников (IPD)
Планируете делиться данными об отдельных участниках (IPD)?
Описание плана IPD
Сроки обмена IPD
Критерии совместного доступа к IPD
Совместное использование IPD Поддерживающий тип информации
- STUDY_PROTOCOL
- САП
- АНАЛИТИЧЕСКИЙ_КОД
Информация о лекарствах и устройствах, исследовательские документы
Изучает лекарственный продукт, регулируемый FDA США.
Изучает продукт устройства, регулируемый Управлением по санитарному надзору за качеством пищевых продуктов и медикаментов США.
Эта информация была получена непосредственно с веб-сайта clinicaltrials.gov без каких-либо изменений. Если у вас есть запросы на изменение, удаление или обновление сведений об исследовании, обращайтесь по адресу register@clinicaltrials.gov. Как только изменение будет реализовано на clinicaltrials.gov, оно будет автоматически обновлено и на нашем веб-сайте. .