Functional Magnetic Resonance Imaging in Patients With Obstructive Sleep Apnea Syndrome
Key facts
- Where
- Reims, FranceSee the site
Could this be for you?
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 18 and 75 years old?
Source: NCT05147649, who can take part
Where in France
- CHU ReimsReims, FranceContact: Damien JOLLYTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorTrial details
- Who runs it
- CHU de Reims
- Trial code
- NCT05147649
- Record updated
- 2 December 2025
- Original description
The obstructive sleep apnea syndrome (OSAS) involves recurrent sleep-related upper airways (UA) collapse. UA mechanical properties and neural control are altered, imposing a mechanical load on inspiration. UA collapse does not occur during wakefulness, hence arousal-dependent compensation. Experimental inspiratory loading in normal subjects elicits respiratory-related cortical activity during wakefulness. The objective of this study is to test whether awake OSAS patients would exhibit a similar cortical activity. Whether or not such cortical compensatory mechanisms have cognitive consequences would be also analyze.Read full original descriptionShow less
Functional Magnetic Resonance Imaging in Patients With Obstructive Sleep Apnea Syndrome, With and Without CPAP, During Wakefulness - Impact on Cognitive Functions
The obstructive sleep apnea syndrome (OSAS) involves recurrent sleep-related upper airways (UA) collapse. UA mechanical properties and neural control are altered, imposing a mechanical load on inspiration. UA collapse does not occur during wakefulness, hence arousal-dependent compensation. Experimental inspiratory loading in normal subjects elicits respiratory-related cortical activity during wakefulness. The objective of this study is to test whether awake OSAS patients would exhibit a similar cortical activity. Whether or not such cortical compensatory mechanisms have cognitive consequences would be also analyze.
Inclusion: OSAS patients; severe OSAS with an Apnea-Hypopnea Index (AHI) > 30/h; without CPAP treatment; Non-OSAS patients; absence of OSAS (AHI < 15/h and absence of excessive daytime sleepiness with Epworth score <11); Non-inclusion criteria :; < 18 years old; >75 years old; left-handed; BMI> 40 kg/m²; another sleep disorder; central component of sleep apnea syndrome (central apnea index> 5 / h); current or past neurological pathology; respiratory pathology (obstructive ventilatory disorder, restrictive ventilatory disorder, hypercapnia); MRI contraindication (metallic foreign body, claustrophobia, pregnant woman, etc.); taking drugs that can modify the BOLD signal on MRI (psychotropic drugs, vasodilators, vasoconstrictors, etc.),; uncorrected sensory impairment (vision or hearing); protected by law.
Exclusion: MINI results showing:; a current mood episode; a current disorder of the use of psychoactive substances or in the last 6 months (excluding tobacco); an eating disorder; a diagnosis of bipolar disorder, current or past schizophrenia; pregnant woman according to the positive beta-hCG test result; left-handed following the laterality questionnaire.