過眠症候群におけるクラリスロマイシンの機序
抗生物質による警戒の改善:過眠症症候群におけるクラリスロマイシンの作用機序
調査の概要
詳細な説明
日中の過度の眠気と長時間の睡眠は、筋緊張性ジストロフィー、パーキンソン病、中枢神経系過眠症候群など、多くの神経疾患に共通する特徴です。 これらの後者の症候群は、臨床的表現型が重複する障害のグループであり、ヒポクレチン欠乏によるナルコレプシー (ナルコレプシー 1 型) の場合を除いて、病態生理学を共有する可能性があります。
これらの障害における病的な日中の眠気は、職業上のパフォーマンスを損ない、生活の質を制限し、自動車やその他の事故のリスクを 2 倍以上に高めます。 これらの過眠症症候群の大部分の根本的な原因は不明であるため、治療は覚醒促進に関与するモノアミン作動性シグナル伝達を増加させることを目的としています。 しかし、過眠症症候群の患者の少なくとも 4 分の 1 は、これらの治療法では十分な症状のコントロールを達成できず、障害や医療休暇が必要になることがよくあります。 現在の標準的なケアのこの失敗を解決するために、日中の過度の眠気に対する新しい治療法が明らかに必要とされています。
以前の研究では、クラリスロマイシンは、眠気の重症度、日常生活の長時間の活動における眠気関連の制限、および眠気関連の生活の質において、有意で臨床的に意味のある改善をもたらしました. 機能障害の一因となる過眠症の付随症状である長い睡眠時間と睡眠慣性も、クラリスロマイシンによって改善されました。
仮説: クラリスロマイシンは過度の眠気やその他の過眠症の症状を軽減します。これは自己申告と客観的なテストによって測定されます。
目的 1: 中枢性過眠症候群患者の覚醒を促進し、眠気を軽減するクラリスロマイシンの能力の中枢神経系メディエーターを特定すること。
仮説 1a: in vitro でのガンマアミノ酪酸 A (GABA-A) 受容体機能の脳脊髄液 (CSF) 増強の変化は、自己報告および客観的に測定された眠気の改善と関連します。
仮説 1b: 機能的結合の変化は、自己報告され客観的に測定された眠気の改善に関連付けられます。
目的 2: クラリスロマイシンが全身性炎症の変化や消化管微生物叢組成の変化を含む、中枢性過眠症候群患者の眠気を軽減する神経外メカニズムを調査すること。
仮説 2a: クラリスロマイシンの使用による眠気の改善は、全身性炎症の減少、特に腫瘍壊死因子-アルファ (TNFα) のレベルの減少と正の関連があります。
仮説 2b: クラリスロマイシンの使用による眠気の改善は、胃腸障害の調節と正の相関があります。
研究の種類
入学 (実際)
段階
- フェーズ2
連絡先と場所
研究場所
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Georgia
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Atlanta、Georgia、アメリカ、30329
- Emory Sleep Center
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
説明
包含基準:
- 特発性過眠症またはナルコレプシー2型の診断
- 18~60歳
- -覚醒促進薬がない、現在の覚醒促進薬にもかかわらず眠い、または現在の覚醒促進薬をベースライン測定前の少なくとも5半減期中止する意思がある
- ベースライン測定前の少なくとも6か月間、プレバイオティクスまたはプロバイオティクスのサプリメントを摂取していない
除外基準:
- 中等度または重度の睡眠時無呼吸症候群、覚醒を伴う重度の周期的四肢運動障害、制御不能な代謝障害、ヒポクレチン欠乏症、脱力発作など、過眠症のその他の潜在的な原因
- クラリスロマイシンの禁忌
- -研究手順のいずれかに対する禁忌
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:基礎科学
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:ダブル
武器と介入
参加者グループ / アーム |
介入・治療 |
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実験的:クラリスロマイシン
この研究群の参加者は、14日間クラリスロマイシンを受け取ります。
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クラリスロマイシンは、14 日間、1 日 2 回、1 回は起床時、1 回は昼食時に 500 mg として投与されます。
他の名前:
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プラセボコンパレーター:プラセボ
この研究群の参加者は、クラリスロマイシンと一致するプラセボを 14 日間受け取ります。
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クラリスロマイシンと一致するプラセボを 500 mg として 1 日 2 回、1 回は起床時、1 回は昼食時に 14 日間投与します。
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この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Change in Epworth Sleepiness Scale (ESS) Score
時間枠:Day -1, Day 14
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The Epworth Sleepiness Scale asks participants to respond to 8 scenarios with how likely they are to fall asleep on a 4-point scale where 0 = "would never doze" and 3 = "high chance of dozing".
Total scores range from 0 to 24 where higher scores indicate a higher chance of falling asleep during daytime activities.
The change in ESS score is obtained by subtracting the total score at Day 14 from the baseline score.
Scores above 0 mean that the mean score at Day 14 was lower than the mean score at Baseline, indicating less sleepiness.
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Day -1, Day 14
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Change in Maintenance of Wakefulness Test (MWT) for Sleep Latency
時間枠:Day -1, Day 14
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The MWT polysomnographic procedure for sleep latency examines how well participants stay awake during several trials where participants relax in a quiet room for 40 minutes.
One study found the mean sleep latency among persons without a sleep disorder to be 35.2
minutes.
The change from baseline is calculated as baseline sleep latency minus sleep latency at Day 14, in minutes.
Positive values result when the duration of sleep latency at Day 14 is lower than at Baseline.
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Day -1, Day 14
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Change in Gamma-aminobutyric Acid Receptor A (GABA-A) Potentiation
時間枠:Day -1, Day 14
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Cerebrospinal fluid (CSF) is drawn to determine the change in levels of GABA-A potentiation between the study arms.
The difference between measured current with GABA alone and the current measured with GABA + CSF yields a measure of potentiation for each CSF sample in each condition.
The change from baseline is calculated as the baseline value minus the value at Day 14.
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Day -1, Day 14
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Change in Default Mode Network (DMN) Connectivity
時間枠:Day -2, Day 13
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The default mode network (DMN) consists of a group of highly correlated brain regions most active during quiet rest, while the task positive network (TPN) is the brain network activated for goal-directed tasks.
DMN connectivity changes with sleep states and it is increasingly implicated in the symptomatology of sleepiness.
During resting state, sleep deprived participants demonstrate reduced static connectivity with the DMN.
Changes in DMN between the Baseline 1 (Day - 2) and Day 13 visits are compared between treatment groups, particularly using quasi-periodic patterns (QPPs), which interrogate network-level connectivity on a dynamic scale.
Preservation of the temporal dimension provides more insight into how this spatiotemporal network propagates across condition and pathology.
The DMN/TPN QPP correlation is reported.
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Day -2, Day 13
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Change in Tumor Necrosis Factor - Alpha (TNF-α)
時間枠:Day -1, Day 14
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Blood samples are used to determine the change in levels of TNF-α between the study arms.
TNF-α is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
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Day -1, Day 14
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Change in Gastrointestinal Microbiome Composition
時間枠:Day -1, Day 14
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Changes in microbiome composition, as measured by alpha diversity using the Shannon Index, via 16S ribosomal ribonucleic acid (rRNA) sequencing results are compared between study arms.
The Shannon Index measures both abundance and evenness of microbial species, values of 0 indicate that a community has only one species.
The higher the value the higher the diversity of species in a particular community.
Change from baseline is calculated by subtracting the Day 14 value from the value at Baseline.
Numbers greater than 0 indicate that the Day 14 Shannon index value is lower than at Baseline.
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Day -1, Day 14
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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On-Treatment Sleep Duration
時間枠:Day 1 through Day 14
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Participants log when they go to bed and when they wake up in order to calculate the number of minutes spent sleeping.
The average duration of sleep across 14 days is compared between study arms.
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Day 1 through Day 14
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Change in Fatigue Severity Scale (FSS) Score
時間枠:Day -1, Day 14
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Fatigue severity is measured with the Fatigue Severity Scale (FSS).
The FSS is a 9-item instrument where responses are on a scale of 1 to 7 where 1 = "disagree" and 7 = "agree".
Total scores range from 9 to 63 where higher scores indicate greater fatigue.
The change in FSS score is obtained by subtracting the total score at Day 14 from the Baseline score.
Scores above 0 signify that the mean score at Day 14 was lower than the mean score at Baseline, indicating decreased fatigue.
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Day -1, Day 14
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Change in Multidimensional Fatigue Inventory (MFI-20) Score
時間枠:Day -1, Day 14
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The MFI-20 is a 20-item instrument assessing fatigue severity.
Responses are on a 5-point scale where 1 = "yes, that is true" and 5 = "no, that is not true".
Positively phrased items are reverse scored so that the total score ranges from 20 to 100 where higher scores indicate greater severity of fatigue.
The change in MFI-20 score is obtained by subtracting the total score at Day 14 from the Baseline score.
Scores above 0 signify that the mean score at Day 14 was lower than the mean score at Baseline, indicating decreased fatigue.
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Day -1, Day 14
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Change in Sleep Inertia Questionnaire (SIQ) Score
時間枠:Day -1, Day 14
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The SIQ is an instrument with 21 items with responses on a 5-point scale where 1 = "not at all" and 5 = "all the time".
Two additional questions relate to how much time it takes for the respondent to wake up in the morning.
Total scores range from 21 to 105 and higher scores indicate increased difficulty from tiredness.
The change in SIQ score is obtained by subtracting the total score at Day 14 from the baseline score.
Scores above 0 signify that the mean score at Day 14 was lower than the mean score at Baseline, indicating reduced difficulty awakening.
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Day -1, Day 14
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On-Treatment Sleep Inertia Likert Scale
時間枠:Day 1 through Day 14
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Sleep inertia is measured with a single item on a 10-point Likert scale asking participants how difficult it was for them to wake up in the morning, where 1 = "not difficult at all" and 10 = "very difficult".
The average scores across 14 days are compared between study arms.
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Day 1 through Day 14
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Change in Interleukin 1 Alpha (IL-1α)
時間枠:Day -1, Day 14
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Blood samples are used to determine the change in levels of IL-1α between the study arms.
IL-1α is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in IL-1α is obtained by subtracting the IL-1α level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Interleukin 1 Beta (IL-1β)
時間枠:Day -1, Day 14
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Blood samples are used to determine the change in levels of IL-1β between the study arms.
IL-1β is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in IL-1β is obtained by subtracting the IL-1β level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Interleukin 2 (IL-2)
時間枠:Day -1, Day 14
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Blood samples are used to determine the change in levels of IL-2 between the study arms.
IL-2 is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in IL-2 is obtained by subtracting the IL-2 level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Interleukin 6 (IL-6)
時間枠:Day -1, Day 14
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Blood samples are used to determine the change in levels of IL-6 between the study arms.
IL-6 is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in IL-6 is obtained by subtracting the IL-6 level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Interleukin (IL-8)
時間枠:Day -1, Day 14
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Blood samples are used to determine the change in levels of IL-8 between the study arms.
IL-8 is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in IL-8 is obtained by subtracting the IL-8 level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Interleukin (IL-15)
時間枠:Day -1, Day 14
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Blood samples are used to determine the change in levels of IL-15 between the study arms.
IL-15 is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in IL-15 is obtained by subtracting the IL-15 level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Interleukin (IL-18)
時間枠:Day -1, Day 14
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Blood samples are used to determine the change in levels of IL-18 between the study arms.
IL-18 is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in IL-18 is obtained by subtracting the IL-18 level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Tumor Necrosis Factor Beta (TNF-β)
時間枠:Day -1, Day 14
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Blood samples are used to determine the change in levels of TNF-β between the study arms.
TNF-β is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in TNF-β is obtained by subtracting the TNF-β level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Interferon Alpha (INF-α2a)
時間枠:Day -1, Day 14
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Blood samples are used to determine the change in levels of INF-α2a between the study arms.
INF-α2a is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in INF-α2a is obtained by subtracting the INF-α2a level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Functional Outcomes of Sleep Questionnaire (FOSQ) Score
時間枠:Day -1, Day 14
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The FOSQ is a 30-item instrument assessing how sleepiness impacts daily activities.
There are five subscales assessing General Productivity, Activity Level, Vigilance, Social Outcomes, and Intimate and Sexual Relationships.
Items are scored on a 4-point scale where 1 = extreme difficulty and 4 = no difficulty.
Subscale scores are obtained by calculating the mean score for the items in that subscale and each can range from 1 to 4, where higher scores indicate less difficulty due to sleepiness.
A total score is obtained by calculating the means of the subscale scores and multiplying that by the number of subscales with a score.
The total score ranges from 5 to 20 and higher scores indicate less difficulty from sleepiness.
The change in FOSQ score is obtained by subtracting the total score at Day 14 from the Baseline score.
Scores below 0 signify that the mean score at Day 14 was higher than the mean score at Baseline, indicating reduced difficulty from sleepiness.
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Day -1, Day 14
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Change in Hypersomnia Severity Index (HSI)
時間枠:Day -1, Day 14
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The HSI is a 9-item instrument assessing the severity of excessive sleepiness (hypersomnolence).
Items are scored on a Likert scale where 0 = not at all and 4 = very much.
Total scores range from 0 to 36 and higher scores indicate greater severity of symptoms of hypersomnia.
The change from baseline is calculated as the baseline score minus the score at Day 14.
The change in HSI score is obtained by subtracting the total score at Day 14 from the baseline score.
Scores above 0 signify that the mean score at Day 14 was lower than the mean score at Baseline, indicating reduced severity of hypersomnia symptoms.
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Day -1, Day 14
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Change in MRI Functional Connectivity
時間枠:Day -2, Day 13
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For functional connectivity analyses, each functional scan is parceled into the 246 regions of interest (ROIs), spanning Yeo's 7 networks contained in the Brainnetome Atlas and mean timecourse is calculated for each group.
Pearson correlations between each pair of ROIs are calculated, to determine the strength of functional connectivity between each pair of regions and inter/intra-network.
This yields a functional connectivity matrix for each functional scan (at both a subject- and group-level).
These correlation matrices are Fischer z-transformed and averaged across each condition to create a mean functional connectivity matrix for each condition.
Here, the average default mode network (DMN) connectivity is reported.
Z-scores have a mean of 0 and scores higher than 0 indicate increased functional connectivity.
The change from Baseline is calculated by subtracting the Day 13 score from the score at Day -2.
Values lower than 0 mean that the Day 13 score was higher than at baseline.
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Day -2, Day 13
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Change in MRI Task Performance - N-Back Accuracy
時間枠:Day -2, Day 13
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Participants complete a working memory task during functional magnetic resonance imaging (fMRI).
The change in task performance is measured as accuracy during 3 different levels of back tasks (0-back, 1-back, and 2-back), from baseline to on-treatment (Day 13).
The 0-back test has participants respond to a prespecified stimulus and is a control condition.
The 1-back involves remembering and responding to a prior stimulus, while a stimulus two trials earlier is responded to with the 2-back.
The change in the percentage of correct responses is obtained by subtracting the percentage at Day 14 from the Baseline percentage.
Values below 0 signify that the mean percent accuracy at Day 14 was higher than the mean percent accuracy at Baseline, indicating increased accuracy.
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Day -2, Day 13
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Change in MRI Task Performance - N-Back Reaction Time
時間枠:Day -2, Day 13
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Participants complete a working memory task during functional magnetic resonance imaging (fMRI).
he change in task performance is measured as reaction time during 3 different levels of back tasks (0-back, 1-back, and 2-back), from baseline to on-treatment (Day 13).
The 0-back test has participants respond to a prespecified stimulus and is a control condition.
The 1-back involves remembering and responding to a prior stimulus, while a stimulus two trials earlier is responded to with the 2-back.
The change in the reaction time of responses is obtained by subtracting the time at Day 14 from the Baseline time.
Scores above 0 signify that the mean time at Day 14 was lower than the mean time at Baseline, indicating faster reaction time.
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Day -2, Day 13
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協力者と研究者
スポンサー
捜査官
- 主任研究者:Lynn Marie Trotti, MD, MSc、Emory University
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
キーワード
追加の関連 MeSH 用語
その他の研究ID番号
- IRB00108681
- 1R01NS111280 (米国 NIH グラント/契約)
- 2025P011204 (その他の識別子:Emory IRB)
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
IPD プランの説明
IPD 共有時間枠
IPD 共有アクセス基準
IPD 共有サポート情報タイプ
- STUDY_PROTOCOL
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
米国FDA規制機器製品の研究
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