Examining the Role of Tolerance on Dose-dependent Effects of Acute THC on Oculomotor and Cognitive Performance
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: Cannabis.
- Кому может быть актуально
- Состояния в реестре: Cannabis Use, Impaired Driving, Cognitive Impairment. 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
- США
- Следующий шаг
- Сохраните исследование, покажите его лечащему врачу и уточните актуальный статус у исследовательского центра. Расходы, документы и поездка →
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Обзор
The purpose of this research is to determine the extent to which oculomotor function accurately detects THC-impairment, if cannabis use experience impacts this detection threshold, and to examine how the oculomotor index corresponds to a measure of sustained attention. A double-blind, placebo-controlled, within-subjects crossover design will be used to examine the dose-effects of THC (0, 5mg, 30mg) on oculomotor performance tasks and a sustained attention task in frequent and infrequent cannabis users. Results from the study will advance the investigators' understanding of the effect of THC and cannabis use frequency on oculomotor function and sustained attention, and will directly inform the validity of the investigators' oculomotor platform for identifying acute THC- induced impairment in frequent and infrequent users.
Вмешательства
- Препарат Cannabis
cannabis with 0, 5, or 30 mg THC will be inhaled via vaporization
Первичные конечные точки
- Commission Errors [Срок оценки: pre-administration, post-administration, 2, 4 hours]
- Omission Errors [Срок оценки: pre-administration, post-administration, 2, 4 hours]
- Reaction Time [Срок оценки: pre-administration, post-administration, 2, 4 hours]
- Reaction Time Standard Error [Срок оценки: pre-administration, post-administration, 2, 4 hours]
- Visuomotor Index [Срок оценки: pre-administration, post-administration, 2, 4 hours]
Вторичные конечные точки (4)
- Saccade Speed [Срок оценки: Pre-administration, post-administration, 2, 4 hours]
- Visually Guided Oculomotor Performance [Срок оценки: Pre-administration, post-administration, 2, 4 hours]
- Antisaccade [Срок оценки: Pre-administration, post-administration, 2, 4 hours]
- Memory-Guided [Срок оценки: Pre-administration, post-administration, 2, 4 hours]
Критерии участия
Критерии включения
- Inclusion criteria: Healthy non-treatment seeking adults (age 18 to 60, N = 40) who report
- (a) infrequent cannabis use defined as at least one reported use in the past year with a negative THC urine toxicology at baseline, or
- (b) report frequent cannabis use defined as > 5 days per week for > 1 year with a positive THC urine toxicology at baseline.
These criteria were selected to target individuals with low and high-frequency cannabis use in order to examine the direct effect of tolerance on study outcome measures.
Критерии исключения
- (1) meet DSM-V criteria for substance use disorders other than tobacco, cannabis, or caffeine,
- (2) are currently receiving or interested in immediately receiving behavioral treatment or medication for cannabis cessation,
- (3) current use of any medications that could affect study outcomes,
- (4) test positive for drugs of abuse (other than cannabis) and/or breath alcohol test at study admission,
- (5) have a current physical or mental illness judged by the study team to negatively impact participant safety or scientific integrity,
- (6) are currently pregnant, planning to become pregnant in the next three months or are currently breastfeeding,
- (7) have a history of clinically significant cardiac arrhythmias or vasospastic disease (e.g. Prinzmetal's angina), or (8) are currently enrolled in another clinical trial or have received any drug as part of a research study within 30 days of study participation.
Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.
Здоровые добровольцы: Да
Дизайн исследования
- Распределение
- Рандомизированное
- Модель
- Перекрёстный дизайн
- Маскирование
- Двойное слепое
- Основная цель
- Фундаментальное исследование
Центры проведения
США · 1 центр
- Johns Hopkins Behavioral Pharmacology Research Unit — Baltimore
Идентификаторы
NCT: NCT06351540 · IRB00332797 · R21DA056687