Neural Basis of Human Working Memory
This ClinicalTrials.gov entry corresponds to the Neural Basis of Human Working Memory protocol approved under Vanderbilt University Medical Center IRB #251231.
This study investigates the neural activity underlying human working memory, via local field potential changes (macro level) and/or single neuronal spiking changes (micro level) from depth electrodes placed for invasive seizure monitoring. Subjects will complete neurocognitive tasks while neural recordings are collected. Some patients will complete neurocognitive tasks while stimulation is applied via depth electrodes. Further understanding the neural activity changes underlying normal and impaired working memory may help to identify novel diagnostic methods and treatments for impaired working memory and may support the use of stimulation for treatment of memory disorders.
調査の概要
研究の種類
入学 (推定)
段階
- 適用できない
連絡先と場所
研究連絡先
- 名前:Christos Constantinidis, PhD
- 電話番号:+1 (615) 936-2020
- メール:christos.constantinidis.1@Vanderbilt.Edu
研究連絡先のバックアップ
- 名前:Lucas Chang, BS
- 電話番号:615-421-3046
- メール:lucas.m.chang@vumc.org
研究場所
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Tennessee
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Nashville、Tennessee、アメリカ、37232
- 募集
- Vanderbilt University Medical Center
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コンタクト:
- Christos Constantinidis, PhD
- 電話番号:(615) 936 - 2020
- メール:christos.constantinidis.1@Vanderbilt.Edu
-
コンタクト:
- Lucas Chang, BA
- 電話番号:615-421-3046
- メール:lucas.m.chang@vumc.org
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-
参加基準
適格基準
就学可能な年齢
- 大人
- 高齢者
健康ボランティアの受け入れ
調査対象母集団
説明
Inclusion Criteria:
- Undergoing SEEG monitoring at Vanderbilt University Medical Center
- Age >18
- English speaking
Exclusion Criteria:
- Age <18
- Not able to complete questionnaires (unable to comprehend instructions or follow directions)
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:なし
- 介入モデル:単一グループの割り当て
- マスキング:なし(オープンラベル)
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
他の:Epilepsy patients
All participants will be patients with medically refractory epilepsy who have undergone depth electrode placement for stereo EEG monitoring for seizure localization.
Participants will complete working memory tasks and EEG recordings will be concurrently collected from their depth electrodes.
Some subjects will undergo macro-micro electrode implantation as a part of their SEEG implantation procedure for the purpose of EEG macro (local activity) and micro (single-unit) recordings.
Some subjects will complete working memory tasks with stimulation applied during task completion.
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Participants complete computerized neurocognitive tasks assessing working memory, response inhibition, decision-making, reward processing, and other related cognitive functions during sEEG monitoring.
Tasks may include the stop signal reaction time task, the n-back working memory task, the delayed response task, the match/nonmatch task, the gambling task, the card guessing task, and the emotional stop signal reaction time task.
Intracranial neural activity is recorded during task performance, and select tasks may include research electrical stimulation delivered through the implanted sEEG electrodes.
Neurophysiology system designed to allow recording of neural signals as well as delivery of neural stimulation.
The system is a portable unit which is connected to cables connected to the clinical electrodes.
Neurophysiology signals from the electrodes can be recorded, amplified, and processed by the unit.
The unit also has the ability to deliver electrical stimulation through the electrodes according to programmed parameters.
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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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Local field potential changes in response to working memory tasks
時間枠:During patient's epilepsy monitoring stay, approximately 20-30 minutes
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Local field potential changes are from intracranial neural recordings taken while patients complete spatial working memory tasks.
In the manual remember 1 remember 2 task, patients are instructed to hold down a cursor on a central location box colored one color or another on screen, while two boxes in locations sequentially flash on screen.
Depending on the central location box color, the patient will drag their cursor to the first or second location box shown, after the central box has disappeared from screen.
In the retro remember 1 remember 2 task, the color of the central box color is not shown until both location boxes have flashed onscreen.
In the manual version, the central location box color is constant throughout the trial.
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During patient's epilepsy monitoring stay, approximately 20-30 minutes
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Single unit neuronal spiking changes in response to memory tasks
時間枠:During patient's epilepsy monitoring stay, approximately 20-30 minutes
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Single neuron spiking activity is recorded through SEEG micro neural recordings while patients complete working memory tasks.
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During patient's epilepsy monitoring stay, approximately 20-30 minutes
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Behavioral performance changes with stimulation
時間枠:During patient's epilepsy monitoring stay, approximately 20-30 minutes
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Bipolar stimulation through pre-selected SEEG electrodes in the prefrontal cortex and surrounding areas will occur during the remember 1 remember 2 working memory tasks.
Stimulation will be performed via the Ripple Neuromed Summit system.
Stimulation will be tested with each patient prior to task to determine safety and tolerability, while patient is monitored by a neurosurgeon or neurologist.
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During patient's epilepsy monitoring stay, approximately 20-30 minutes
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協力者と研究者
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (推定)
研究の完了 (推定)
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
その他の研究ID番号
- 251231 (Vanderbilt University Medical Center IRB)
- 1R21MH139624-01 (米国 NIH グラント/契約)
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?
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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