About this trial
The purpose of this research is to learn more about a new treatment for individuals with Major Depressive Disorder (MDD) with heightened symptoms of anhedonia (i.e. loss of pleasure or interest in activities). The treatment is called Prism, and it is a software device intended for a novel form of neurofeedback training to be used in a clinic setting.
During this study, the subject will use different techniques to measure brain activities, including magnetic resonance imaging (MRI) and electroencephalography (EEG).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Primary Diagnosis of MDD with Anhedonia, established according to the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition Text Revision (DSM5TR) - HDRS-17 score of ≥20, SHAPS-C score of ≥25.
Fluency in written and spoken English.
Able intellectually to understand the instructions
Ability to give signed, informed consent either written or electronic (via REDCap eConsent).
Disqualifiers
Contraindications to MRI (e.g., metal in the body, claustrophobia).
Any suicidal behavior in the past 1 year (i.e., actual attempt, interrupted attempt, aborted attempt, or preparatory acts or behavior) assessed using Columbia -Suicide Severity Rating Scale (C-SSRS) prior to screening and during the screening period.
Diagnosis for current moderate or severe substance or alcohol use disorder (SUD/AUD) within the past month (as defined in DSM-5-substance use disorder).
Any unstable medical condition, as per the clinical judgement of the investigator.
Trial design
Parallel
Treatments tested in this trial
Prism Training
DeviceParticipants will complete 20 Prism training sessions. The Prism training sessions take place twice a week over a 10-week period, with a minimum of one night of sleep between sessions. Participants will also receive two single booster sessions, 4 weeks and 8 weeks after their last NF session completed.
Treatment groups
Trial outcomes
Primary outcomes
HDRS-21
Hamilton Rating Scale for Depression - the maximum score is 64. A score above 20 is considered a severe depression.
Secondary outcomes
SHAPS-C
Snaith-Hamilton-Pleasure scale - is a 14- item self-administered measure of anhedonia symptoms.
HDRS-21
Hamilton Rating Scale for Depression - the maximum score is 64. A score above 20 is considered a severe depression.
CGI-I
Clinical global impression - The 7-point CGI-I scale rates improve with a (1) representing a very much improved' patient and (7) representing a patient who has become 'very much worse' due to treatment. The rating (4) represents a patient displaying no change from the treatment.
CGI-I
Clinical global impression - The 7-point CGI-I scale rates improve with a (1) representing a very much improved' patient and (7) representing a patient who has become 'very much worse' due to treatment. The rating (4) represents a patient displaying no change from the treatment.
Sponsors and contacts
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