Clinical trials
Cognitive clinical trials
Below are recruiting cognitive clinical trials, each written for real people, not researchers. We’re tracking 2,033 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04694534Recruiting
Serious game program to help thinking skills in multiple sclerosis
This trial tests whether a computer “serious game” can improve thinking and memory skills in people with multiple sclerosis (MS). It’s designed for adults who report thinking problems and show weaker-than-average results on specific brain tests.
Arras, Hauts-de-FranceAges 18–65 - NCT04700826RecruitingPhase 4
Preventing stroke, death, and memory decline in atrial fibrillation
This trial looks at ways to help people with atrial fibrillation lower their risk of stroke, premature death, and worsening memory. It may help by identifying which prevention approach works best for a broader community of patients.
Birmingham, West MidlandsAges 55–73 - NCT04715984Recruiting
Testing brain-circuit targets during DBS surgery in Parkinson’s
This study looks at how brain connections involved in movement may relate to thinking and memory problems in Parkinson’s disease. It happens during a deep brain stimulation (DBS) operation, using tests while the surgeon is placing an electrode.
Nashville, TennesseeAges 40 years+ - NCT04717388Recruiting
Study brain and feelings in people with tinnitus
This study looks at how tinnitus affects the brain, thinking, and emotional well-being. It compares people with chronic tinnitus to people without tinnitus (including a group related to a specific type of epilepsy surgery).
ParisAges 18 years+ - NCT04722939Recruiting
Testing brain function outcomes after ICU kidney failure treatment
This trial studies how treating severe kidney injury in the ICU may affect patients’ brain and thinking function over time. It compares measurements of brain activity and function after starting kidney replacement therapy.
Kingston, OntarioAges 18 years+ - NCT04757220Recruiting
Study of apathy in people with schizophrenia or depression
This study looks at “apathy,” or reduced motivation/interest, in people with schizophrenia or depression. It may help researchers understand what drives apathy and how to measure it in a clearer, more complete way.
StrasbourgAges 18–60 - NCT04759326Recruiting
Hippotherapy after stroke to improve movement and function
This trial studies whether therapy using a horse (hippotherapy) can help adults who still have stroke-related physical difficulties more than 3 months after their stroke. It aims to improve daily function and movement when standard recovery has not been enough.
La CanourgueAges 18 years+ - NCT04796506Recruiting
Tracking sleep changes to improve thinking in Parkinson’s
This study looks at whether changes in “slow wave sleep” (a deep sleep stage) match improvements in thinking for people with Parkinson’s. It uses an exercise/recovery-focused approach and checks sleep and thinking scores to see if these changes go together.
Aurora, ColoradoAges 45–100 - NCT04804618Recruiting
Study uses blood protein changes in memory loss and Alzheimer’s
This trial studies blood “protein fingerprints” in people with mild memory problems or Alzheimer’s disease to better understand what’s happening. It may help researchers find ways to measure the condition and improve care over time.
Guangzhou, GuangdongAges 55 years+ - NCT04810858Recruiting
Study how chronic marijuana affects brain inflammation in HIV
This study looks at whether ongoing marijuana use changes “brain inflammation” and brain cell injury in people living with HIV. It may help researchers understand potential risks or protective effects and how treatment and brain health interact.
Winston-Salem, North CarolinaAges 25–59 - NCT04817163Recruiting
Testing a CBT-I sleep program in cancer clinics
This trial tests whether a structured sleep program called CBT-I can help people with non-metastatic cancer sleep better. It may help by teaching practical, evidence-based steps for insomnia in a cancer-clinic setting.
QuébecAges 18 years+ - NCT04829071RecruitingEarly Phase 1
Testing brain and movement training after a one-sided stroke
This early research study looks at a way to improve thinking and movement after a stroke that happened more than 6 months ago. It may help people who still have problems using one side of their body to walk and learn new movement skills.
Los Angeles, CaliforniaAges 45–85 - NCT04864080Recruiting
Online study to measure brain-related signals in pain or depression
This trial uses an online study platform to look for “cognitive biomarkers,” which are measurable patterns in thinking or brain-related responses. It compares people with pain or depression to healthy controls to see how these patterns differ and could help future research or care.
Minneapolis, MinnesotaAges 18 years+ - NCT04883255RecruitingEarly Phase 1
Study cannabis effects on brain function in adults with HIV
This early-phase study looks at how cannabis (and the body’s cannabinoid system) may affect thinking and brain-related measures in people with HIV. You may be asked to avoid cannabis and complete several brain and health assessments to see how these factors relate.
San Diego, CaliforniaAges 18–65 - NCT04885322Recruiting
Brain stimulation trial for attention and thinking control
This study tests whether a non-painful brain stimulation method (tDCS) can improve attention and “thinking control,” and how brain activity changes during tasks. It also uses brain imaging (MRI), so safety and comfort conditions must be met.
Sacramento, CaliforniaAges 18–50 - NCT04898790Recruiting
Testing ways to improve thinking after bone marrow transplant
This study looks at whether a physical activity program and related study measures can improve thinking and memory in older adults around the time of a stem cell transplant. If you qualify and participate, the team will compare outcomes between groups to see what approach works best.
Omaha, NebraskaAges 19 years+ - NCT04903015Recruiting
Study brain effects in retiring pro soccer players
This study looks at how years of playing professional soccer may affect the brain and thinking, using MRI (brain scans) and comparisons to people who had little head-impact sports exposure. You might join if you are a retiring Ligue 1 or Ligue 2 player and meet the injury and health criteria.
StrasbourgAges 32–55 - NCT04906863Recruiting
Genetic study for early dementia in adults and families
This trial studies genes to better understand why some people develop dementia and memory problems earlier in life. It may help researchers find clearer causes and improve future testing and treatments for families affected by dementia.
New York, New YorkAges 35 years+ - NCT04911738Recruiting
Virtual reality glasses to improve balance after stroke
This trial studies whether virtual reality glasses training can improve balance and body alignment after a recent stroke. It will also compare how stroke participants with balance problems respond versus people without stroke.
GrenobleAges 18–80 - NCT04601038RecruitingPhase 2
Testing a stress-blocking drug for early Alzheimer's risk
This study tests a new medication, CORT108297, that may help protect the brain from the harmful effects of stress in people at risk for Alzheimer's disease. It is looking for adults age 55 and older who either have mild memory problems or are healthy but have a family history, APOE4 gene, or memory concerns.
Baltimore, MarylandAges 55 years+ - NCT02604563Recruiting
Aging, blood changes, and health in older adults
This study examines why some older adults develop changes in their blood cells that may affect their health. Researchers will look for links between these blood changes, aging, and common health problems in older people.
St Louis, MissouriAges 50 years+ - NCT07051655Recruiting
Ketone drink for thinking and memory
This study tests whether a drink containing ketones (a natural energy source for the brain) can improve thinking and memory. It involves three groups: people with obesity, lean people, and athletes.
Birmingham, AlabamaAges 19–55 - NCT04946916Recruiting
Testing blood/brain marker levels and thinking problems in psychiatric illness
This study looks at neurofilament light (a brain/nerve injury marker) and how it relates to thinking and memory problems in people with certain psychiatric conditions. It may help researchers understand brain changes and cognitive impairment, which could guide better diagnosis in the future.
BronAges 45–80 - NCT04997642Recruiting
Parkinson’s patient database for memory and movement tracking
This study builds a research database of people who receive care for Parkinson’s disease, including those with mild memory problems or dementia. It aims to collect consistent information that researchers can use to better understand Parkinson’s and related thinking changes.
Philadelphia, PennsylvaniaAges 18 years+
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Common questions
- Are there clinical trials for cognitive?
- Yes. Clin2 currently lists 2,033 recruiting cognitive studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a cognitive trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a cognitive trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.