- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT03227406
The Evolution of Memories Across Wake and Sleep
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Descrizione dettagliata
Goal 1: How do memories evolve across wake and sleep? The investigators are interested in how specific memories are selected for change across periods of wake and sleep, and in characterizing the manner in which those memories change. There has been research into broad areas of memory, such as procedural and declarative memory, but other forms of memory, such as semantic memory, remain unexplored, as well as different subtypes of memory within these broad areas. Additionally, it is presently unknown how memories are selected for subsequent processing during sleep and wake. The investigators aim to characterize which memories change, how they are selected, and how they change differently over periods that include sleep versus periods during which participants remain awake.
Goal 2: How are these changes reflected behaviorally and in the EEG signal? The investigators will employ and develop specific behavioral and electrophysiological tasks and measures that allow one to probe the state of a particular type of memory and determine how it changes over periods of wake and sleep. EEG signals may be informative about the status of a memory during behavioral performance as well as during both waking and sleeping offline states.
Goal 3: What stages and features of sleep affect memory evolution? In the cases in which sleep in particular is found or suspected to influence memories in a unique way, the investigators will assess which stages and features of sleep are involved in that evolution. Generally, this will be accomplished by correlating measures such as time spent in a sleep stage, prominence of particular brain oscillations, or density of spindles with changes in behavior or in other EEG metrics
Tipo di studio
Iscrizione (Anticipato)
Fase
- Non applicabile
Contatti e Sedi
Luoghi di studio
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Massachusetts
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Boston, Massachusetts, Stati Uniti, 02215
- Robert Stickgold
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
- willing and able to follow the protocol
- willing to refrain from alcohol and recreational drugs for the duration of the protocol
- in some cases, English as a first language, normal hearing, and/or normal or corrected to normal vision is required
Exclusion Criteria:
- self-reported sleep disturbances
- a history of mental illness
- the use of any drugs that could affect either sleep or cognitive functioning (e.g., sleeping pills or antidepressants)
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Scienza basilare
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Nessuno (etichetta aperta)
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
|---|---|
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Nessun intervento: Daytime Wake
Subjects are trained and retested during a single period of daytime wake
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Nessun intervento: Overnight sleep
Subjects are trained on one day and tested the next day, after a night of normal sleep
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Sperimentale: Sleep deprivation
Subjects are trained on one day and tested the next day, after a night of sleep deprivation
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Subjects are kept awake all night.
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Sperimentale: Pisolino diurno
I soggetti vengono addestrati e poi nuovamente testati dopo un pisolino diurno
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Participants are given a 90-minute nap opportunity in the early afternoon.
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Motor sequence task improvement
Lasso di tempo: 4-24 hrs
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The increase in the number of correct sequences typed, from the last three training trials to the first three delayed-test trials, is calculated as a percent improvement.
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4-24 hrs
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Psychomotor vigilance task lapse rate
Lasso di tempo: 4-24 hrs
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The absolute number of trials in a 5-min test period on which the participant fails to responds with 500ms is calculated as the lapse rate.
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4-24 hrs
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Serial reaction time test improvement
Lasso di tempo: 4-24 hrs
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At two time points, separated by a period of wake or sleep, the average reaction time to stimuli in repeated sequence blocks is subtracted from the average reaction time in random blocks.
The percent increase in this difference, from the final blocks in the first test to the first blocks in the second test, is calculated as a percent improvement.
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4-24 hrs
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Visual discrimination task improvement
Lasso di tempo: 4-24 hrs
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At two time points, separated by a period of wake or sleep, the interpolated stimulus-mask ISI corresponding to 80% accuracy on the texture discrimination task is determined, and task improvement is calculated as the difference between these thresholds, in ms.
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4-24 hrs
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Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Sleep architecture (absolute times)
Lasso di tempo: 4-24 hrs
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Sleep is recorded with standard polysomnography and the amount of time spent in each wake and sleep stage calculated.
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4-24 hrs
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Sleep architecture (percent times)
Lasso di tempo: 4-24 hrs
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The percent of total sleep time spent in each sleep stage is calculated.
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4-24 hrs
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Spindle
Lasso di tempo: 4-24 hrs
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The density of sleep spindles per minute of N2 sleep is calculated.
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4-24 hrs
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Sleep microstructure
Lasso di tempo: 4-24 hrs
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The EEG spectral power is calculated for N2 and N3 sleep.
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4-24 hrs
|
Collaboratori e investigatori
Collaboratori
Investigatori
- Investigatore principale: Robert Stickgold, PhD, Beth Israel Deaconess Medical Center
Studiare le date dei record
Studia le date principali
Inizio studio (Effettivo)
Completamento primario (Anticipato)
Completamento dello studio (Anticipato)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- 2016P000222
- 5R01MH048832-23 (Sovvenzione/contratto NIH degli Stati Uniti)
Informazioni su farmaci e dispositivi, documenti di studio
Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti
Studia un dispositivo regolamentato dalla FDA degli Stati Uniti
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
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