Tato stránka byla automaticky přeložena a přesnost překladu není zaručena. Podívejte se prosím na anglická verze pro zdrojový text.

Mikrodávkování psilocybinu na kognici, náladu a kvalitu života

22. září 2026 aktualizováno: Godfrey Pearlson, Yale University

Efekty mikrodávkování psilocybinu na kognici, náladu a kvalitu života: Pilotní studie

This study is being conducted to evaluate how of 30 days of intermittently microdosed psilocybin affects mood, cognition, subjective well-being and structural/functional MRI results compared to a placebo. Investigators hypothesize that compared to placebo, 30 days of intermittently microdosed psilocybin will produce observable changes in mood, cognition, subjective well-being and MRI, in the absence of psychedelic experiences.

Přehled studie

Postavení

Zatím nenabíráme

Podmínky

Intervence / Léčba

Detailní popis

This study is being conducted to evaluate the effects of 30 days of intermittently microdosed psilocybin in a parallel arm double-blind manner on mood, cognition, subjective well-being and structural/functional MRI compared to placebo, using validated psychological assessments and cognitive tests. Investigators hypothesize that compared to placebo, 30 days of intermittently microdosed psilocybin will produce observable changes in mood, cognition, subjective well-being and MRI, in the absence of psychedelic experiences.

Demonstrating significant results in a population of healthy psychedelic non-users will establish a strong precedent for studying the effects of microdosing psychedelics in patient populations, such as those with treatment-resistant depression. Showing that microdosing minimizes risk of adverse outcomes with psychedelic treatment while maintaining beneficial effects would provide useful information relevant to clinical research in psychedelic-assisted psychotherapy. In addition to investigating claims that microdosing psychedelics may improve cognition and mood, this study also aims to test the hypothesis that these effects including those measurable at a brain level may persist beyond the course of the 30 days of the study. There are few to no studies that assessed the longevity of psychedelic effects on the majority of the above measures, so the proposed study may further establish the longer-term benefits of microdosing. The use of structural and functional magnetic resonance imaging (fMRI) will elucidate the mechanisms by which microdosing may be exerting its effects on mood and cognition. Because this is a relatively understudied area, information gleaned from this study will provide service in informing the field in general.

Typ studie

Intervenční

Zápis (Odhadovaný)

20

Fáze

  • Raná fáze 1

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní kontakt

Studijní místa

    • Connecticut
      • Hartford, Connecticut, Spojené státy, 06106
        • Olin Neuropsychiatry Research Center
        • Kontakt:

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

21 let až 55 let (Dospělý)

Přijímá zdravé dobrovolníky

Ano

Pohlaví způsobilá ke studiu

Všechno

Popis

Inclusion Criteria:

  • No history of psychedelic use OR
  • No use within 10 years, less than or equal to 7x in life OR
  • No use within 5 years, less than or equal to 3x in life
  • Able to read, speak, and understand English
  • Able and willing to provide written informed consent, and willing to commit to study protocol
  • Women of childbearing potential must be on a highly effective birth control method
  • Must have smartphone compatible with mindLAMP app

Exclusion Criteria:

  • Positive screen for recreational drugs or alcohol on test day will result in rescheduling the appointment
  • Current mood, developmental, or psychotic disorders (e.g., schizophrenia, affective disorders) per DSM-V
  • Current or past alcohol or substance use disorder per DSM-V
  • IQ <70 on the Weschler Abbreviated Scale of Intelligence
  • Serious medical, neuro-ophthalmological, or neurological illness (e.g., cancer, seizure disorders, encephalopathy)
  • Current pregnancy, breastfeeding, or ineffective birth control methods
  • History of head trauma with loss of consciousness lasting >30 minutes or concussion in last 30 days
  • Any medical/neurological condition that could compromise neurocognitive performance (e.g., epilepsy, multiple sclerosis, fetal alcohol syndrome)
  • Anyone deemed unsafe to study personnel for any reason; e.g., suicidal ideation
  • Focal brain lesion seen on structural MRI
  • MRI contraindications (e.g., implanted metallic object, severe claustrophobia)
  • Clinically significant risk of suicidality, as determined by a score of 4 or higher on the suicidal ideation subscale of C-SSRS (past 6 months) or any suicidal behavior (lifetime)
  • Currently taking a monoamine oxidase inhibitor, tricyclic antidepressant, other non-SSRI or non-SNRI antidepressants, an antipsychotic or a mood stabilizer
  • Family history of schizophrenia or schizoaffective disorder (first degree relatives), or bipolar disorder type 1 (first degree relatives)
  • Diagnosis of arrhythmia or ongoing cardiovascular disorder
  • Sustained clinically relevant abnormal heart rate (resting supine heart rate >100 bpm) or blood pressure (resting supine sustolic blood pressure (SBP) above 140mmHg or diastolic blood pressure (DBP) above 90mmHg) at screening
  • Clinically relevant abnormal laboratory results, 12-lead ECG, vital signs, cardiopulmonary compromise as detected by echocardiogram, or other physical findings
  • Presence of more than mild regurgitant lesions in any position and left ventricular ejection fraction < 35 %
  • Evidence of pulmonary vascular disease demonstrated by right ventricular systolic pressure >30mmHg
  • Currently taking any GLP-1

Study Discontinuation Criteria

  • Development of active suicidal or homicidal ideation with plan and intent
  • Worsening in mood symptoms, or development of psychotic symptoms that in the opinion of the investigators requires discontinuation
  • Development of severe or life-threatening medical condition
  • Psychiatric or medical hospitalization or incarceration post-screening
  • Adverse reaction to study drug that in the opinion of the investigators requires discontinuation (e.g. acute, clinically significant hypertension, cardiac toxicity, non-acute significant negative psychological changes)

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

  • Primární účel: Základní věda
  • Přidělení: Randomizované
  • Intervenční model: Paralelní přiřazení
  • Maskování: Dvojnásobek

Zbraně a zásahy

Skupina účastníků / Arm
Intervence / Léčba
Aktivní komparátor: Psychedelic group

An imperceptible dose of psilocybin in capsules will be administered to subjects three times weekly for four weeks. Assessments will be conducted once weekly. After 30 days of a steady dose of psilocybin, subjects will be re-assessed with baseline measures.

2.0mg powdered psilocybin derived from Psilocybe cubensis mushrooms, in capsules, provided three times weekly for four weeks

Komparátor placeba: Placebo group

An dose of placebo in capsules, identical to the active, will be administered to subjects three times weekly for four weeks. Assessments will be conducted once weekly. After 30 days of a steady dose of psilocybin, subjects will be re-assessed with baseline measures.

0mg matching capsules, provided three times weekly for four weeks

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
The Complex Working Memory Span (CWMS) Task- fMRI measure
Časové okno: From enrollment to end of treatment at 8 weeks.

CWMS Task assesses immediate plus delayed recall and working memory by assessing working memory capacity by presenting a list of stimuli to be recalled while simultaneously performing a secondary task. This task uses a fully crossed design which includes both same-domain CWMS conditions (e.g. verbal storage combined with verbal processing) as well as cross-domain CWMS conditions (e.g., verbal storage combined with spatial processing). BOLD signal Infrontal lobe.

From enrollment to end of treatment at 8 weeks.
NEO-Five-Factor-Inventory (NEO-FFI)
Časové okno: From enrollment to end of treatment at 8 weeks.

The NEO-FFI is a self-description questionnaire with 60 items for the measurement of the "big five": neuroticism, extraversion, openness, agreeableness, and consciousness. It uses a 5-point Likert scale ranging from "completely disagree" to "fully agree.

From enrollment to end of treatment at 8 weeks.
Beck Depression Inventory
Časové okno: From enrollment to end of treatment at 8 weeks.

This scale has a total of 21 items. Each item is scored from 0-3 points, and the total score ranges from 0-63 points. The higher the score, the higher the degree of depression.

From enrollment to end of treatment at 8 weeks.
Beck Anxiety Inventory
Časové okno: From enrollment to end of treatment at 8 weeks.

Beck Anxiety Inventory is a 21-item self-reported questionnaire which measures the existenceand severity of symptoms of anxiety. Each of the 21 items on BAI tool represents an anxiety symptom. A total score of 0 - 7 is interpreted as a "Minimal" level of anxiety; 8 - 15 as "Mild"; 16 - 25 as "Moderate", and 26 - 63 as "Severe".

From enrollment to end of treatment at 8 weeks.
Harvard Flourishing Measure
Časové okno: From enrollment to end of treatment at 8 weeks.

12 questions, rating from 0 to 10 per question, sum score to calculate the 'flourish measure' will be used.

From enrollment to end of treatment at 8 weeks.
NIH Toolbox Cognitive Battery
Časové okno: From enrollment to end of treatment at 8 weeks.

Cognitive function will be assessed using the NIH Toolbox Cognition Battery, administered on an iPad.

From enrollment to end of treatment at 8 weeks.
Ecological Momentary Assessments (EMAs) w/ MindLamp
Časové okno: From enrollment to end of treatment at 8 weeks.

Once-daily questions (EMAs) about mood and sleep will be sent via the MindLamp smartphone app.

From enrollment to end of treatment at 8 weeks.
Switching Stroop Test
Časové okno: From enrollment to end of treatment at 8 weeks.

Stroop task measures response inhibition or response interference control. Participants will be shown a series of word colors that are either congruent or incongruent with the color of the word itself. The participant will be asked to respond to the color of the word and not the word itself. Responses are made with the keyboard. The incongruent condition is the more difficult condition of the two. Reaction time is recorded and a cost score is calculated, with shorter cost scores indicating better performance.

From enrollment to end of treatment at 8 weeks.
Penn Conditional Exclusion Test
Časové okno: From enrollment to end of treatment at 8 weeks.

Neurocognition measure of reasoning & problem solving in PennCNB. Scores will be transformed into z-scores. The key score will assess perseverative errors. Lowest score = 0, no max score. A higher score is correlated with worse performance, i.e. more perseverative errors.

From enrollment to end of treatment at 8 weeks.
Flanker Inhibitory Control and Attention Test
Časové okno: From enrollment to end of treatment at 8 weeks.

This test is designed to evaluate an individual's ability to concentrate their attention while inhibiting automatic response tendencies that could potentially hinder goal achievement. This is the percent correct outcome from this assessment.

From enrollment to end of treatment at 8 weeks.
Face Name Associated Memory Exam
Časové okno: From enrollment to end of treatment at 8 weeks.

The score ranges from 0 to 130, with a higher score indicating better speed of processing.

From enrollment to end of treatment at 8 weeks.
9-hole pegboard dexterity test
Časové okno: From enrollment to end of treatment at 8 weeks.

The Nine-Hole Peg Test (9HPT) is used to measure finger dexterity in patients with various neurological diagnoses. Time to complete the test as quickly as possible

From enrollment to end of treatment at 8 weeks.
NIH Toolbox Cognitive Battery
Časové okno: From enrollment to end of treatment at 8 weeks.

The Nine-Hole Peg Test (9HPT) is used to measure finger dexterity in patients with various neurological diagnoses. Time to complete the test as quickly as possible

From enrollment to end of treatment at 8 weeks.
Neurite Orientation Dispersion and Density Imaging (NODDI)
Časové okno: From enrollment to end of treatment at 8 weeks.

Assessing synaptic plasticity in MRI

From enrollment to end of treatment at 8 weeks.

Sekundární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Complex Working Memory Span task
Časové okno: From enrollment to end of treatment at 8 weeks.

Measures ability to juggle holding information (storage) and doing something with it (processing) at the same time. Percent accuracy will be reported.

From enrollment to end of treatment at 8 weeks.
fMRI
Časové okno: From enrollment to end of treatment at 8 weeks.

Mean BOLD signal

From enrollment to end of treatment at 8 weeks.

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Sponzor

Spolupracovníci

Vyšetřovatelé

  • Vrchní vyšetřovatel: Godfrey Pearlson, MD, Yale University

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia (Odhadovaný)

1. října 2026

Primární dokončení (Odhadovaný)

1. dubna 2028

Dokončení studie (Odhadovaný)

1. dubna 2028

Termíny zápisu do studia

První předloženo

26. února 2026

První předloženo, které splnilo kritéria kontroly kvality

26. února 2026

První zveřejněno (Aktuální)

4. března 2026

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Aktuální)

24. září 2026

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

22. září 2026

Naposledy ověřeno

1. června 2026

Více informací

Termíny související s touto studií

Další identifikační čísla studie

  • HHC-2025-0200

Plán pro data jednotlivých účastníků (IPD)

Plánujete sdílet data jednotlivých účastníků (IPD)?

NE

Informace o lécích a zařízeních, studijní dokumenty

Studuje lékový produkt regulovaný americkým FDA

Ano

Studuje produkt zařízení regulovaný americkým úřadem FDA

Ne

Tyto informace byly beze změn načteny přímo z webu clinicaltrials.gov. Máte-li jakékoli požadavky na změnu, odstranění nebo aktualizaci podrobností studie, kontaktujte prosím register@clinicaltrials.gov. Jakmile bude změna implementována na clinicaltrials.gov, bude automaticky aktualizována i na našem webu .