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Quantitation of Glymphatic Functioning in Sleep and Meditative States

Quantitation of Glymphatic Functioning in Sleep and Meditative States

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04506892
Enrollment
75
Registered
2020-08-10
Start date
2021-02-01
Completion date
2024-12-01
Last updated
2025-08-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Parkinson Disease, Sleep

Keywords

glymphatic system, meditation

Brief summary

This involves development and application of magnetic resonance imaging (MRI) methods for visualizing hemodynamic and metabolic relationships in healthy volunteers with advanced meditation experience.

Detailed description

This study is evaluating the glymphatic system during awake, sleep, and meditative states.

Interventions

BEHAVIORALMeditation

meditation

Sponsors

Vanderbilt University Medical Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE

Masking description

no masking is used in this protocol

Eligibility

Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
Yes

Inclusion criteria

* Ages 14-45 * Adept meditator status

Exclusion criteria

* Any non-MR compatible material implant, or contraindication to MR scanning * Claustrophobia or inability to lie still for prolonged periods of time * Participants with a recent (less than 2 months) infection, tattoo, or wound * No consumption of stimulants or alcohol within 12 hours of the study visit * clinical diagnosis of any major neurological or psychological condition * Taking benzodiazepines, cholinestorase inhibitors, anti-psychotics, opioids, MAO inhibitors

Design outcomes

Primary

MeasureTime frameDescription
CSF flow changebaseline to 24 hoursUsing MRI to assess the change in CSF flow in awake, sleep deprived, and meditative states

Secondary

MeasureTime frameDescription
EEG changesbaseline to 24 hoursLooking at brain wave changes before and after intervention in Alpha, Beta, and Delta waves associated with light to deep sleep. The lowest bandwidth for alpha waves is 8 while the highest is 12. The lowest bandwidth for Beta waves is 13 Hz while the highest is 30 Hz. The lowest bandwidth for Delta waves is .4 Hz and the highest is 4 Hz.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026