University of Minnesota
Minneapolis, Minnesota, 55455, United States
Location status: Recruiting
NCT Number: NCT07231497
The goal of this clinical is to learn more about decision making in psychosis spectrum disorders, like schizophrenia. The investigators will ask people who do not have psychosis to take a single dose of modafinil and then complete some brain games on the computer that measure decision making. They hope to improve our understanding of psychosis to help people in the future. The main research questions are:
Does a single dose of modafinil change how people play the brain games? Does a single dose of modafinil change brain activity?
Participants will:
Complete an interview and self-report questionnaires. Complete safety screening activities, like a blood draw, a urine drug test, and an alcohol breathalyzer test.
Take a single dose of modafinil. Complete brain games while wearing an electroencephalography (EEG) cap, before and after taking the single dose of modafinil. EEG measures electrical activity in the brain.
Interested in participating?
Request Info18 year–35 year
All sexes
Interventional
Phase 3
Minneapolis, Minnesota, 55455, United States
Location status: Recruiting
Participants will be asked to complete two appointments in this study. These appointments will ideally be about 1 week apart, but can be up to 1 month apart if needed.
The first appointment is the Intake and Clinical appointment. This visit will take between 30 minutes to 2.5 hours, depending on how many study tasks are needed. Participants in this study may have participated in a sister study, called "State Representation in Early Psychosis 2 (STEP 2)." If so, they will not need to complete many of the intake questionnaires, and it is expected to take about 30 minutes for them to complete this appointment. If they did not participate in STEP 2, participants will need to complete the full intake battery.
During the interview, the investigators will ask questions about a participant's medical and psychiatric history, and current and past mental health symptoms. The investigators will collect demographics, as well as information on the person's social life and quality of life. After the interview, they will complete brain games on their computer.
The second appointment is the EEG + Medication appointment. Participants will come in person to the MHealth Fairview Riverside Campus. The visit will take place in the University of Minnesota Department of Psychiatry. This visit will take about 4-4.5 hours.
First, the investigators will complete safety screening measures. This will include:
After screening measures are successfully completed, the investigators will fit an EEG cap onto the participant's head. While this is happening, the participant will complete self-report questionnaires. Once the cap is in place, the participant will play some brain games.
After this, the participant will take a single dose of modafinil. The participant will be provided with a meal while the modafinil metabolizes. Afterwards, they will monitor the participant's vital signs and ask whether they are experiencing any adverse effects.
After the observation period is completed, the participant will complete the same brain games on the computer. The investigators will take another vital signs measurement and ask about adverse effects.
The following day, the investigators will contact the participant via phone to ask whether they experienced any adverse effects after leaving the study appointment. This call should last about 5 minutes.
Healthy volunteers accepted: Yes
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Exclusion criteria
Medical criteria:
Mental health criteria:
Other Criteria:
Single dose of 200mg
Time frame: Baseline
A computerized cognitive assessment measuring processing speed. Z scores range from -5 to 5, with a higher score indicating increased cognitive functioning.
Time frame: Day 7 (EEG + Modafinil Appointment)
A computerized cognitive assessment measuring processing speed. Z scores range from -5 to 5, with a higher score indicating increased cognitive functioning.
Time frame: Baseline
A computerized cognitive assessment measuring verbal memory. Z scores range from -5 to 5, with a higher score indicating increased cognitive functioning.
Time frame: Day 7 (EEG + Modafinil Appointment)
A computerized cognitive assessment measuring verbal memory. Z scores range from -5 to 5, with a higher score indicating increased cognitive functioning.
Time frame: Baseline
A computerized cognitive assessment measuring problem solving. Z scores range from -5 to 5, with a higher score indicating increased cognitive functioning.
Time frame: Day 7 (EEG + Modafinil Appointment)
A computerized cognitive assessment measuring problem solving. Z scores range from -5 to 5, with a higher score indicating increased cognitive functioning.
Time frame: Baseline
A computerized cognitive assessment measuring social cognition and emotion recognition skills. Z scores range from -5 to 5, with a higher score indicating increased cognitive functioning.
Time frame: Day 7 (EEG + Modafinil Appointment)
A computerized cognitive assessment measuring social cognition and emotion recognition skills. Z scores range from -5 to 5, with a higher score indicating increased cognitive functioning.
Time frame: Day 7 (EEG + Modafinil Appointment)
The EEG will measure resting state alpha synchrony in the brain. The primary outcome will be differences in EEG activity before and after modafinil administration.
Time frame: Day 7 (EEG + Modafinil Appointment)
The EEG will measure oscillatory frontal gamma synchrony in the brain. The primary outcome will be differences in EEG activity before and after modafinil administration
Time frame: Day 7 (EEG + Modafinil Appointment)
The EEG will measure task-related reward positivity/P900 activity in the brain. The primary outcome will be differences in EEG activity before and after modafinil administration
Time frame: Day 7 (EEG + Modafinil Appointment)
The EEG will measure N1 amplitude in the brain. The primary outcome will be differences in EEG activity before and after modafinil administration
Time frame: Day 7 (EEG + Modafinil Appointment)
The TOPX task consists of a series of pattern sequences. One pattern is designated the "A" cue, and another the "X" cue, which requires one response (AX, 60-70% of trials, e.g. respond with the left button), while other sequences require a different response (AY or BX, 12-15% of trials each, or BY, 6-10% of trials, e.g. respond with the right button). Given the strong expectation that X's evokes a valid response, BX trials place demands on the fidelity (stability, memory) of the "B" cue state representation to overcome this tendency. Performance is assessed based on accuracy of responses. The primary outcome will be differences in task accuracy before and after modafinil administration.
Time frame: Day 7 (EEG + Modafinil Appointment)
The TOPX task consists of a series of pattern sequences. One pattern is designated the "A" cue, and another the "X" cue, which requires one response (AX, 60-70% of trials, e.g. respond with the left button), while other sequences require a different response (AY or BX, 12-15% of trials each, or BY, 6-10% of trials, e.g. respond with the right button). Given the strong expectation that X's evokes a valid response, BX trials place demands on the fidelity (stability, memory) of the "B" cue state representation to overcome this tendency. Response time performance is assessed based on the delay in the presentation of the stimuli and the selection of the response. The primary outcome will be differences in response times before and after modafinil administration.
Time frame: Day 7 (EEG + Modafinil Appointment)
This is a task variant that uses choice options (neutral images) that are rewarded probabilistically. The rewarded stimulus with the highest reward is changed over time. State learning associated with staying or switching stimuli too quickly (lose-switching) can be evaluated. Performance is assessed based on selection of the option that will yield the highest reward. The primary outcome will be differences in task performance before and after modafinil administration.
Time frame: Day 7 (EEG + Modafinil Appointment)
This is a task variant that uses choice options (neutral images) that are rewarded probabilistically. The rewarded stimulus with the highest reward is changed over time. State learning associated with staying or switching stimuli too quickly (lose-switching) can be evaluated. Performance is assessed based on the delay between the presentation of stimuli and the selection of the response. The primary outcome will be differences in task performance before and after modafinil administration.
Time frame: Day 7 (EEG + Modafinil Appointment)
This is a task variant that uses choice options (neutral images) that are rewarded probabilistically. The rewarded stimulus with the highest reward is changed over time. State learning associated with staying or switching stimuli too quickly (lose-switching) can be evaluated. Performance is assessed based on the behavior of reward seeking-whether participants "explore" to find new reward scenarios, or if they stay to "exploit" a known reward scenario. The primary outcome will be differences in reward seeking behavior before and after modafinil administration.
Time frame: Baseline
Clinician-administered rating scale to assess psychiatric symptoms such as depression, anxiety, hallucinations, and unusual behavior. Scores on individual items range from 1 (not present) to 7 (extremely severe); global scores range from 24 to 168.
Time frame: Baseline
Clinician-administered rating scale to assess functioning in schizophrenia. Individual items range from 0 (virtually absent) to 6 (Little or no deficit); global scores range from 0 to 54.
Time frame: Baseline
Clinician-administered rating scale to assess social functioning. Scores range from 1 (extreme social isolation) to 10 (Superior social/interpersonal functioning).
Time frame: Baseline
Clinician-administered rating scale to assess occupational functioning. Scores range from 1 (Extreme role dysfunction) to 10 (Superior role functioning)
Contact information is provided by the study sponsor or research team.
University of Minnesota
Other
Acronym: COSTEP 1
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View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.
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