Factors Affecting Sensory and Motor Learning
2 other identifiers
interventional
300
1 country
1
Brief Summary
How participants perceive the position of their own hand in various contexts will be examined. This will include changing the visual display to suggest the hand is in a slightly different position, and asking participants to indicate where they think it is by pointing with their other hand.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Apr 2022
Longer than P75 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
April 29, 2022
CompletedFirst Submitted
Initial submission to the registry
May 10, 2022
CompletedFirst Posted
Study publicly available on registry
May 16, 2022
CompletedPrimary Completion
Last participant's last visit for primary outcome
April 30, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
April 30, 2027
August 26, 2025
August 1, 2025
5 years
May 10, 2022
August 20, 2025
Conditions
Outcome Measures
Primary Outcomes (1)
Realignment
Measured by comparing where the subject points on a touchscreen when indicating perceived position of visual and proprioceptive targets early vs. late in the behavioral task.
1 day
Secondary Outcomes (2)
Visuo-proprioceptive weighting
1 day
Target estimation variance
1 day.
Study Arms (6)
Conscious awareness: No information
SHAM COMPARATORTold nothing about the visuo-proprioceptive mismatch. Hand remains hidden beneath mirror that shows visual display. (control)
Conscious awareness: Explanatory diagram
EXPERIMENTALTold in advance about the visuo-proprioceptive mismatch, which will be explained with a diagram. Hand remains hidden.
Conscious awareness: Direct vision of hand
EXPERIMENTALFoamboard under mirror removed, making the mirror see-through and the hand directly visible.
Movement feedback: No feedback
SHAM COMPARATORNo movement feedback (control)
Movement feedback: Target hand
EXPERIMENTALMovement feedback about the target hand.
Movement feedback: Pointing hand
EXPERIMENTALMovement feedback about the pointing hand.
Interventions
Participant is told there will be a mismatch between their target finger and the visual indicator of target finger position. They will be shown a diagram explaining this.
Foamboard under mirror removed, making the mirror see-through and the hand directly visible. Mismatch between target hand and visual indicator will be directly visible.
After the participant points at each target, a cursor indicating final pointing position will be displayed briefly. The visual indicator of the target hand will be displaced.
After the participant points at each target, a cursor indicating final pointing position will be displayed briefly. The visual indicator of the target hand will not change, but the cursor indicating pointing hand position will change.
The visual indicator of the target hand will be displaced, but there will be no cursor to indicate the pointing hand's position.
Participants will not be told anything about the visuo-proprioceptive mismatch. Instead, they will be asked simply to attend to the target positions.
Eligibility Criteria
You may qualify if:
- Between the ages of 18-45 years old
- Right-handed.
- Covid has been found to have neurological effects in some people, but mostly the effects on sensorimotor control and neurophysiology are unknown. So we will only include individuals who report being free of Covid symptoms in week preceding testing.
You may not qualify if:
- Past or present history of seizure, stroke, any brain or peripheral nerve disease, severe head trauma, or spinal cord surgery.
- Learning or attention conditions such as ADHD.
- Orthopedic or pain conditions, or a history of seriously injured bones, joints or muscles in either arm.
- Lack of normal or corrected-to-normal vision.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Hannah Block
Bloomington, Indiana, 47403, United States
Study Officials
- PRINCIPAL INVESTIGATOR
Hannah J Block
Indiana University, Bloomington
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- PARTICIPANT
- Purpose
- BASIC SCIENCE
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Associate Professor
Study Record Dates
First Submitted
May 10, 2022
First Posted
May 16, 2022
Study Start
April 29, 2022
Primary Completion (Estimated)
April 30, 2027
Study Completion (Estimated)
April 30, 2027
Last Updated
August 26, 2025
Record last verified: 2025-08
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- ANALYTIC CODE
- Time Frame
- The data will become available when group results are published in peer-reviewed journals.
- Access Criteria
- Data will be available on www.osf.io for anyone who wishes to download it. The relevant osf registry will be cited in the peer-reviewed publication so that interested readers can find it.
All IPD that underlie results published in peer-reviewed journals will be shared. Only de-identified data will be shared.