A Study of Taste- and Olfactory-Evoked Potentials in Patients With Visual Impairment: Taste, Smell, and Vision
Ориентир для пациента и семьи
Простыми словами
Автоматическая сводка по структурированным данным реестра. Она помогает сориентироваться, но не заменяет официальный протокол или оценку врача.
- Что изучают
- В протоколе указаны: Taste and smell evaluation, Recording of evoked potentials (EP).
- Кому может быть актуально
- Состояния в реестре: Central Visual Impairment, Peripherical Visual Impairment, Macular Retinal Dystrophy, Peripherical Macular Dystrophy. Базовые параметры: 18 лет — 60 лет · Все.
- Что важно проверить
- Возраст, диагноз и пол — только базовые ориентиры. Предыдущее лечение, анализы и другие обязательные условия указаны ниже в критериях участия.
- Где проводится
- Франция
- Следующий шаг
- Сохраните исследование, покажите его лечащему врачу и уточните актуальный статус у исследовательского центра. Расходы, документы и поездка →
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Обзор
Visual impairment, whether central or peripheral, may influence the plasticity of other sensory modalities, such as taste and smell. Taste-evoked potentials (TEPs) and smell-evoked potentials (SEPs)-methods for analyzing brain activity in response to taste and smell stimuli-allow for the objective assessment of these interactions. This approach has already demonstrated its value in the study of cognitive disorders. This study aims to demonstrate an enhancement of taste and smell capabilities that could compensate for specific visual impairments, particularly in situations involving food choices.
Вмешательства
- Другое Taste and smell evaluation
Determination of taste and smell ability scores using standardized methods (ETOC and Taste Strips) - Другое Recording of evoked potentials (EP)
A recording of gustatory evoked potentials (GEP) and olfactory evoked potentials (OEP) in response to stimuli consisting of sucrose solution, vanillin, and a combination of the two.
Первичные конечные точки
- Average latency of PEG (Taste-Evoked Potentials) peaks [Срок оценки: At the baseline]
- Average amplitude of PEG (Taste-Evoked Potentials) peaks [Срок оценки: At the baseline]
Критерии участия
Критерии включения
- Adult: ≥ 18 years and ≤ 60 years
- Individual who has given oral consent
- Individual who has been fasting (no food, drink, or tobacco) for at least 1 hour prior to PEG and PEO measurement
- No cognitive complaints and normal neurological examination.
- Group of patients with visual impairment:
A. Central: documented bilateral macular dystrophy (e.g., Stargardt disease, Best disease) with confirmed central scotoma (CV 24.2, 10.2, or 30.2).
B. Peripheral: documented bilateral peripheral retinal dystrophy with confirmed peripheral involvement (CV 30-2 or 24-2).
- Control group: a person with normal vision and no known ophthalmological abnormalities (normal visual acuity and fundus examination) who is precisely matched by sex and smoking status (former smoker who has quit vs. nonsmoker), and approximately matched by age (± 5 years) to a visually impaired participant included in the study.
Критерии исключения
For this group: patients with visual impairments:
- Individuals who are not enrolled in or eligible for a social security program
- Individuals subject to a legal protective measure (guardianship, conservatorship)
- Individuals subject to judicial safeguard measures
- Adults who are legally incapacitated or unable to give informed consent
- Documented COVID-19 infection within the 6 months prior to enrollment
- Active smokers (≥1 cigarette per day) or users of any other inhaled substances (water pipe, cannabis, etc.)
- Participants following a sugar-free diet
- Participants with diabetes, of any type
- Participants taking medication (ongoing during the study) that interferes with taste perception • Pregnant or breastfeeding women
- Individuals with neurodegenerative diseases (Parkinson's, Alzheimer's)
- Individuals with braids, dreadlocks, or any other hairstyle that prevents electrodes from being placed in sufficiently precise locations on the scalp.
- Overweight subjects with a BMI ≥ 35 kg/m²
Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.
Здоровые добровольцы: Да
Дизайн исследования
- Распределение
- Нерандомизированное
- Модель
- Параллельные группы
- Маскирование
- Открытое
- Основная цель
- Фундаментальное исследование
Центры проведения
Франция · 1 центр
- Chu Dijon Bourgogne — Dijon
Идентификаторы
NCT: NCT07707219 · GABRIELLE 2026