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| Name | Class |
|---|---|
| University Health Network, Toronto | OTHER |
| University of Calgary | OTHER |
| Harvard University | OTHER |
| McGill University |
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The goal of this project is to learn more about the different ways in which people process information that is stressful and rewarding, and how abnormalities in these two processes are related to depression.
Participants will participate in two 3-hour sessions separated by a week at Providence Care, Mental Health Services, and a third, 1.5-hour session at the Queen's MRI Facility. At the first session participants will complete a packet of questionnaires about their mood and take part in an interview about their mood, medications, drug use, and any other symptoms, as well as an interview about their relationships with their parents and any experiences of abuse. At the second session participants will participate in a stress test, which involves giving a speech to a panel. The investigators will also collect saliva samples to look at stress hormones. Participants will also complete a task on the computer that involves looking at cartoon faces and making decisions about them. At the third session, the investigators take images of of participant's brain using a magnetic resonance scanner.
Participants are invited to participate in a 6-month follow-up for this study, which would involve the same procedure as outline above.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Depressed Participants | No intervention | ||
| Healthy Control Participants | No intervention |
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| Measure | Description | Time Frame |
|---|---|---|
| Stress Sensitivity: Salivary Hormone and Stress Challenge Test (TSST) | Participants are required to give a speech and an arithmetic test in front of a panel. Saliva samples are collected at 8 points throughout the test. | 2 hours after beginning of Time B Appointment |
| Measure | Description | Time Frame |
|---|---|---|
| Mood and Anxiety Symptom Questionnaire (MASQ) | Self-report scale of general distress (GD), anhedonic depression (AD), and anxious arousal (AA) symptoms | Administered at first baseline appointment and covers past 2 weeks |
| Reward Responsivity: Probabilistic Reward Task |
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For Depressed Participants:
Inclusion Criteria:
Exclusion Criteria:
For Healthy Control Participants:
Inclusion Criteria:
Exclusion Criteria:
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Community sample
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| Name | Affiliation | Role |
|---|---|---|
| Kate Harkness, PhD | Queens University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Queen's University | Kingston | Ontario | K7L 3N6 | Canada |
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| ID | Term |
|---|---|
| D003244 | Consciousness Disorders |
| ID | Term |
|---|---|
| D019954 | Neurobehavioral Manifestations |
| D009461 | Neurologic Manifestations |
| D009422 | Nervous System Diseases |
| D012816 | Signs and Symptoms |
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| OTHER |
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Saliva is collected at eight points across the second session in 5mL vials. Saliva samples are assayed for neuroendocrine hormones (e.g., cortisol). Whole blood is collected in EDTA tubes at the first session. Whole blood is currently being banked. No assays are being conducted at this time.
Computerized task that requires participants to choose between two stimuli and develop a response bias to the more frequently rewarded stimulus. |
| Administered at second baseline appointment |
| Snaith Hamilton Pleasure Scale (SHAPS and SHAPS-C) | Self-report of anhedonia symptoms | Administered at first baseline appointment and covers past 2 weeks prior to interview |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D019965 | Neurocognitive Disorders |
| D001523 | Mental Disorders |