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- Klinische proef NCT01049828
Resting-State Neural Connectivity in Patients With Subjective Tinnitus Without Bother
Tinnitus is the occurrence of an auditory sensation without the presence of an acoustic stimulus. Approximately, 50 million people in the United States experience chronic tinnitus and 15 million of these people have bothersome tinnitus. Several studies have shown that people who are bothered by their tinnitus have difficulty in concentration and focus. Through imaging modalities we have deranged neural networks responsible for attention. Only 20 percent of patients diagnosed with tinnitus are severely bothered. We seek the following:
- Match a group of non-bothered tinnitus patients on age and hearing status to an existing cohort of bothered tinnitus patients.
- Assess the resting-state neural connectivity in patients with non-bothersome tinnitus. Findings from the comparison of functional connectivity magnetic resonance imaging (fcMRI) from subjects with bothersome tinnitus in our current rTMS clinical trial to normal age-matched controls without tinnitus demonstrates that subjects with bothersome tinnitus have dramatic alterations in cortical attention and control networks. Our hypothesis is that the fcMRI-defined changes in the attention and control networks reflect the impact of excessive auditory stimulation in patients with bothersome tinnitus and explains the difficulty with concentration, short-term memory, and other common problems. To fully test this hypothesis we need to obtain fcMRI of the attention network among subjects with tinnitus but without bother and compare the status of their neural networks with those of tinnitus subjects with bother and with normal controls.
- Compare the resting cortical networks in subjects with non-bothersome tinnitus to subjects with bothersome tinnitus and subjects without tinnitus Our null hypothesis is that there are no differences in the resting-state cortical networks, especially the attention and control networks, between tinnitus patients who do not experience bother, tinnitus patients who do experience bother, and subjects without tinnitus. Through fcMRI, we will examine correlations in blood oxygen level dependent (BOLD) signals in established auditory, attention, control, and other brain regions in the resting brain and compare these findings to already collected fcMRI scans of bothered tinnitus patients, and controls (patients without tinnitus).
Studie Overzicht
Studietype
Inschrijving (Werkelijk)
Contacten en locaties
Studie Locaties
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Missouri
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St. Louis, Missouri, Verenigde Staten, 63110
- Washington University, Center for Clinical Studies
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Bemonsteringsmethode
Studie Bevolking
Beschrijving
Inclusion Criteria:
- Men and women between the ages of 45 and 60 years
- Subjective, unilateral or bilateral, non-pulsatile tinnitus of 6 month's duration or greater
- A recent audiogram (within 6 months)
- Either "not bothered" or "bothered a little" on the Global Bothersome scale
- Able to give informed consent
- English-speaking
Exclusion Criteria:
- Patients experiencing tinnitus related to cochlear implantation, retrocochlear lesion, or other known anatomic/structural lesions of the ear and temporal bone
- Patients with hyperacusis or misophonia (hyper-sensitivity to loud noises)
- Patients with cardiac pacemakers, intracardiac lines, implanted medication pumps, implanted electrodes in the brain, other intracranial metal objects with the exception of dental fillings, or any other contraindication for MRI scan
- Patients with an acute or chronic unstable medical condition which, in the opinion of the investigator, would require stabilization prior to initiation of magnetic stimulation
- Patients with any active ear disease that, in the opinion of the PI, needs to be further evaluated
- Patients with symptoms of depression as evidenced by a score of 14 or greater on the Beck Depression Inventory or, in the opinion of the psychiatric sub-investigator demonstrates active mood symptoms that meet DSM-IV-TR criteria for Major Depressive Disorder
- Any psychiatric co-morbidity that, in the opinion of the psychiatric sub-investigator, may complicate the interpretation of study results
- Patients with tinnitus related to Workman's Compensation claim or litigation-related event
- Weight over 350 pounds
- A Mini-Mental Status Exam score less than 27
- Patients with a history of claustrophobia
- Inability to lay flat for 2 hours
- Active alcohol and/or drug dependence or history of alcohol and/or drug dependence within the last year
- Any medical condition that, in the opinion of the investigators, confounds study results or places the subject at greater risk
- Unable to provide informed consent
- Any exclusions from radiology screening Currently Pregnant
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
Cohorten en interventies
Groep / Cohort |
Interventie / Behandeling |
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Slightly or Non-Bothered Tinnitus Group
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No treatment for tinnitus will occur in this study.
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
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Recruit 20 participants and have them undergo both neuro-cognitive and neuro-imaging testing.
Tijdsspanne: 8 months
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8 months
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Medewerkers en onderzoekers
Publicaties en nuttige links
Studie record data
Bestudeer belangrijke data
Studie start
Primaire voltooiing (Verwacht)
Studie voltooiing (Verwacht)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Updates van studierecords
Laatste update geplaatst (Schatting)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- WU01201982
Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .
Klinische onderzoeken op Tinnitus
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State University of New York at BuffaloUniversity at BuffaloVoltooidTinnitus, subjectief | Tinnitus | Door lawaai veroorzaakte tinnitus | Tinnitus, objectief | Tinnitus verergerd | Tinnitus, pulserend | Tinnitus, Spontane Oto-Akoestische Emissie | Tinnitus, klikken | Tinnitus, tensor tympani geïnduceerdVerenigde Staten
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Mohab MohammedNog niet aan het wervenPulsatiele tinnitus (diagnose)
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Philipps University Marburg Medical CenterLinkoeping University; Eriksholm Research Centre; University Hospital of Gießen...VoltooidTinnitus | Subjectieve Tinnitus | Chronische TinnitusDuitsland
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University of GuadalajaraHospital Civil de Guadalajara; Institute of Experimental and Clinical TherapeuticsWervingOxidatieve stress | Tinnitus, subjectief | Tinnitus, Bilateraal | Antioxidant therapie | Psychiatrische medicijnen | Ontstekingscytokinen | SSRIMexico
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University Hospital, BordeauxNog niet aan het wervenPulserende TinnitusFrankrijk
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Cairo UniversityWerving
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