Variability in decision strategy use studied with eyetracking and fMRI
- Conditions
- standard MRI research without direct medical applicationsno diseasesthis research utilizes brain imaging techniques with healthy participants only
- Registration Number
- NL-OMON48133
- Lead Sponsor
- niversiteit Leiden
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Pending
- Sex
- Not specified
- Target Recruitment
- 60
Inclusion Criteria
Healthy young adults (18-30 years old) with normal vision.
Exclusion Criteria
Significant history of head trauma, premature birth, learning disabilities,
neurological or psychiatric illness. Heart arrhythmia, glaucoma, congenital eye
diseases, hyperopia, myopia, hypertension and use of anti-depressants or
psychotropic medication and possible pregnancy (in adult females). MRI
contra-indications, including metal implants and claustrophobia. Smoking more
than five cigarettes a day * to avoid nicotine withdrawal effects during the
study. Alcohol consumption < 24 hours before study, caffeine consumption < 3
hours before study. These criteria will be assessed by a self-report
questionnaire administered during pre-screening.
Study & Design
- Study Type
- Observational non invasive
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method <p>Brain activation as measured by fMRI, particularly the difference between<br /><br>participants prefer-ring a complex vs. simple decision strategy. Prestimulus<br /><br>pupil size, and pupil size changes to task stimuli, particularly the<br /><br>differences in these measures between participants preferring a complex vs.<br /><br>simple decision strategy.</p><br>
- Secondary Outcome Measures
Name Time Method <p>n/a</p><br>