[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100641212":3},{"organization":4,"armGroups":7,"interventions":22,"overallOfficials":29,"centralContacts":33,"locations":28,"responsibleParty":39,"collaborators":28,"id":42,"slug":43,"hasResults":44,"nctId":45,"briefTitle":46,"officialTitle":47,"acronym":48,"eligibilityCriteria":49,"healthyVolunteers":50,"sex":51,"minAge":52,"maxAge":53,"enrollmentInfo":54,"targetDuration":28,"studyType":57,"phases":58,"briefSummary":60,"conditions":61,"keywords":63,"overallStatus":72,"whyStopped":28,"lastUpdateSubmitDate":73,"lastUpdatePostDateStruct":74,"startDateStruct":77,"completionDateStruct":79,"leadSponsor":81,"locationsCount":28},{"fullName":5,"class":6},"Sungkyunkwan University","OTHER",[8,14,18],{"label":9,"type":10,"description":11,"interventionNames":12},"Young adults","EXPERIMENTAL","Participants aged 19 to 54 years with tactile sensation in the hands and fingers. Participants in this group will perform electrotactile sensory discrimination tasks to assess discrimination thresholds for stimulation frequency, stimulation amplitude, and temporal gaps, as well as task accuracy and reaction time. This group may also complete both focused and cognitive load conditions.",[13],"Behavioral: Electrotactile Sensory Discrimination Tasks",{"label":15,"type":10,"description":16,"interventionNames":17},"Older adults","Participants aged 55 to 70 years with tactile sensation in the hands and fingers. Participants in this group will perform electrotactile sensory discrimination tasks to assess discrimination thresholds for stimulation frequency, stimulation amplitude, and temporal gaps, as well as task accuracy and reaction time. This group may also complete both focused and cognitive load conditions.",[13],{"label":19,"type":10,"description":20,"interventionNames":21},"Stroke patients","Participants aged 19 years or older who have been diagnosed with ischemic or hemorrhagic stroke confirmed by CT or MRI and who have proprioceptive sensory impairment with residual tactile sensation in the fingertip. Participants in this group will undergo preliminary assessments of cognitive function, upper-limb motor function, proprioception, cutaneous sensation, and hand function before performing electrotactile sensory discrimination tasks. Stroke patients will participate in a single study visit and will not undergo the cognitive load condition to minimize fatigue and experimental burden.",[13],[23],{"type":24,"name":25,"description":26,"armGroupLabels":27,"otherNames":28},"BEHAVIORAL","Electrotactile Sensory Discrimination Tasks","Participants will receive non-invasive electrotactile stimulation through surface electrodes attached to the upper limb, such as the fingertip, palm, elbow, or shoulder, depending on the stimulation condition. Participants will perform sensory discrimination tasks to assess their ability to discriminate changes in stimulation frequency, stimulation amplitude, and temporal gaps in stimulation. Stimulation intensity will be individualized based on each participant's perception threshold and discomfort threshold and will remain below the discomfort threshold throughout the experiment. Task performance, including just noticeable difference, task accuracy, and reaction time, will be recorded.",[15,19,9],null,[30],{"name":31,"affiliation":5,"role":32},"Hangue Park, PhD","PRINCIPAL_INVESTIGATOR",[34],{"name":35,"role":36,"phone":37,"phoneExt":28,"email":38},"June Seung Lee, MS","CONTACT","+82-10-2087-0016","iijjuness@g.skku.edu",{"type":32,"investigatorFullName":40,"investigatorTitle":41,"investigatorAffiliation":5,"oldNameTitle":28,"oldOrganization":28},"Hangue Park","Associate Professor","100641212","electrotactile-frequency-amplitude-and-temporal-gap-discrimination-in-young-adults-older-adults-and-stroke-survivors-100641212",false,"NCT07656675","Electrotactile Frequency, Amplitude, and Temporal Gap Discrimination in Young Adults, Older Adults, and Stroke Survivors","Assessment of Electrotactile Sensory Discrimination Across Young Adults, Older Adults, and Stroke Survivors for Neurorehabilitation Feedback Design","ESD-NR","Inclusion Criteria:\n\n* Young Adult Group:\n* Age 19 to 54 years.\n* Has tactile sensation in the hands and fingers.\n* Provides voluntary written informed consent personally or through a legally authorized representative, if applicable.\n\nOlder Adult Group:\n\n* Age 55 to 70 years.\n* Has tactile sensation in the hands and fingers.\n* Provides voluntary written informed consent personally or through a legally authorized representative, if applicable.\n\nStroke Patient Group:\n\n* Age 19 years or older.\n* Diagnosis of ischemic or hemorrhagic stroke.\n* Stroke confirmed by CT or MRI.\n* Stroke accompanied by proprioceptive sensory impairment.\n* Residual tactile sensation in the fingertip.\n* Provides voluntary written informed consent personally or through a legally authorized representative,\n\nExclusion Criteria:\n\n* Young and Older Adult Groups:\n* Absence of tactile sensation in the hands or fingers.\n* Congenital deformity of the hands or fingers.\n* Presence of a major pre-existing neurogenic disease.\n* Presence of a major psychiatric disorder, such as major depressive disorder, schizophrenia, bipolar disorder, or dementia.\n* Implanted pacemaker.\n\nStroke Patient Group:\n\n* Difficulty communicating due to K-MMSE score \\\u003C 23, severe language impairment, or similar condition.\n* Absence of tactile sensation in the hands or fingers.\n* Congenital deformity of the hands or fingers.\n* Severe pain during elbow joint or finger movement.\n* Progressive or unstable stroke.\n* Presence of hemispatial neglect.\n* Presence of a major pre-existing neurogenic disease.\n* Presence of a major psychiatric disorder, such as major depressive disorder, schizophrenia, bipolar disorder, or dementia.\n* Implanted pacemaker.",true,"ALL","19 Years","70 Years",{"count":55,"type":56},80,"ESTIMATED","INTERVENTIONAL",[59],"NA","The purpose of this study is to evaluate and compare sensory discrimination ability for electrotactile stimulation among young adults, older adults, and patients with stroke. Participants will receive non-invasive electrotactile stimulation through electrodes attached to the skin of the upper limb, such as the fingertip, palm, elbow, or shoulder, depending on the stimulation condition. The study will assess discrimination thresholds for changes in stimulation frequency, stimulation amplitude, and temporal gaps in stimulation, together with task accuracy and reaction time. The results are expected to provide foundational data for sensory assessment, electrotactile feedback design, and sensory-based rehabilitation technologies for older adults and stroke patients.",[62],"Stroke",[64,65,66,67,68,69,70,71],"Electrotactile stimulation","Sensory discrimination","Just noticeable difference","Tactile perception","Proprioception","Stroke rehabilitation","Aging","Cognitive load","NOT_YET_RECRUITING","2026-06-17",{"date":75,"type":76},"2026-06-18","ACTUAL",{"date":78,"type":56},"2026-06-11",{"date":80,"type":56},"2028-04-30",{"name":5,"class":6}]