[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100632062":3},{"organization":4,"armGroups":7,"interventions":14,"overallOfficials":10,"centralContacts":10,"locations":20,"responsibleParty":46,"collaborators":10,"id":50,"slug":51,"hasResults":52,"nctId":53,"briefTitle":54,"officialTitle":55,"acronym":10,"eligibilityCriteria":56,"healthyVolunteers":52,"sex":57,"minAge":58,"maxAge":59,"enrollmentInfo":60,"targetDuration":10,"studyType":63,"phases":10,"briefSummary":64,"conditions":65,"keywords":67,"overallStatus":23,"whyStopped":10,"lastUpdateSubmitDate":70,"lastUpdatePostDateStruct":71,"startDateStruct":74,"completionDateStruct":76,"leadSponsor":78,"locationsCount":81},{"fullName":5,"class":6},"San Francisco Veterans Affairs Medical Center","FED",[8],{"label":9,"type":10,"description":11,"interventionNames":12},"Within-group study",null,"individuals endorsing current high stress levels",[13],"Other: Nature vs. Urban walks",[15],{"type":16,"name":17,"description":18,"armGroupLabels":19,"otherNames":10},"OTHER","Nature vs. Urban walks","We will evaluate the impact of spending time in nature vs. an urban control on EEG-based measures of reward and attention and resting heart rate variability",[9],[21],{"facility":22,"status":23,"city":24,"state":25,"zip":26,"country":27,"countryCode":28,"cosmosGeoPoint":29,"geoPoint":34,"contacts":35},"University of San Francisco California OR San Francisco VA Medical Center","RECRUITING","San Francisco","California","94122","United States","US",{"type":30,"coordinates":31},"Point",[32,33],-122.41942,37.77493,{"lat":33,"lon":32},[36,41],{"name":37,"role":38,"phone":39,"phoneExt":10,"email":40},"Susanna Fryer, PhD","CONTACT","4155624334","susanna.fryer@ucsf.edu",{"name":42,"role":38,"phone":43,"phoneExt":44,"email":45},"Annalise Jear, BA","4152214810","26358","Annalise.Jear@ucsf.edu",{"type":47,"investigatorFullName":37,"investigatorTitle":48,"investigatorAffiliation":49,"oldNameTitle":10,"oldOrganization":10},"PRINCIPAL_INVESTIGATOR","Associate Professor","University of California, San Francisco","100632062","effects-of-brief-nature-exposure-on-brain-functioning-and-stress-reactivity-100632062",false,"NCT07508800","Effects of Brief Nature Exposure on Brain Functioning and Stress Reactivity","YONDER Study (Effects of Brief Nature Exposure on Brain Functioning and Stress Reactivity)","Inclusion Criteria:\n\n* Meets cut-off for high level of perceived stress on PSS-10 during screening (\\>27 total score); Current or past depressive and anxiety disorders, if present on SCID-5 assessment, will be ncluded due to their high prevalence and overlap with perceived stress\n* Normal, or corrected to normal, vision (due to the visual nature of the EEG tasks)\n* If on psychotropic medication, stable regime for \\> 1 month\n\nExclusion Criteria:\n\n* Major medical conditions with CNS sequelae (e.g., seizure disorders, multiple sclerosis, significant, uncontrolled cardiovascular pathology) Past or present neurological problems (including seizures and head trauma resulting in neurological or cognitive sequelae)\n* IQ estimate \\\u003C75 on the Test of Premorbid Functioning\n* Current or past history of severe mental illness (e.g., bipolar schizophrenia spectrum disorder, or current or past history of substance use disorders","ALL","18 Years","25 Years",{"count":61,"type":62},20,"ESTIMATED","OBSERVATIONAL","This study is focused on understanding the impact of time spent in nature (relative to an urban control) on stress, neural, and cardiac functioning in people experiencing high levels of stress, depression, and anxiety.",[66],"Stress (Psychology)",[68,69],"nature; eeg; reward processing ; attention functioning","stress","2026-03-30",{"date":72,"type":73},"2026-04-02","ACTUAL",{"date":75,"type":73},"2026-01-01",{"date":77,"type":62},"2026-06-30",{"name":79,"class":80},"National Institutes of Health (NIH)","NIH",1]