Deficit Fields for Stroke Recovery
Error-enhanced Learning & Recovery in 2 & 3 Dimensions
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
-
-
Illinois
-
Chicago, Illinois, Forenede Stater, 60611
- Rehabilitation Institute of Chicago
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
STROKE SURVIVORS:
- adult (age >18)
- Chronic stage stroke recovery (8+ months post)
- available medical records and radiographic information about lesion locations
- strokes caused by an ischemic infarct in the middle cerebral artery
- primary motor cortex involvement
- a Fugl-Meyer score (between 15-50) to evaluate arm motor impairment level
HEALTHY CONTROL PARTICIPANTS:
- adult (age >18)
- healthy individuals with no history of stroke or neural injury
Exclusion Criteria:
- bilateral paresis;
- severe sensory deficits in the limb
- severe spasticity (Modified Ashworth of 4) preventing movement
- aphasia, cognitive impairment or affective dysfunction that would influence the ability to perform the experiment
- inability to provide an informed consent
- severe current medical problems
- diffuse/multiple lesion sites or multiple stroke events
- hemispatial neglect or visual field cut that would prevent subjects from seeing the targets.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Dobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: Deficit-fields to reduce error
We hypothesize that a deficit-field design, using the statistics of a patient's errors to customize training, will provide optimal augmentation that varies during motion as needed.
We will compare the training effects of error deficit-fields with previous methods of error augmentation to improve reaching ability.
|
Stroke survivors exhibit error in both reaching extent and abnormal curvatures of motion.
Prior error augmentation techniques multiply error by a constant at each instant during movement.
However, magnification of spurious errors may provoke over-compensation.
We hypothesize that a deficit-field design, using the statistics of a patient's errors to customize training, will provide optimal augmentation that varies during motion as needed.
We will compare the training effects of error deficit-fields with previous methods of error augmentation to improve reaching ability.
|
|
Eksperimentel: Deficit-fields to expand range of motion
Amplifying augmentation can expand motor exploration and improve skill retention in patients.
Using motor exploration patterns from each patient, we will form customized deficit-fields to recover normal joint workspace.
We will compare augmentation training that either amplifies or diminishes the observed deficits (Expt-1).
We also compare deficit-fields with our prior augmentation methods to determine the added value of increased customization (Expt-2).
|
Motor deficits manifest in the workspace limitations of joints, i.e. reduced range of motion, uneven extension-flexion, inter-joint coupling, and unwanted synergies.
Our work builds upon these ideas by augmenting self-directed movement for training coordination.
We found that amplifying augmentation can expand motor exploration and improve skill retention in patients.
Using motor exploration patterns from each patient, we will form customized deficit-fields to recover normal joint workspace.
We will compare augmentation training that either amplifies or diminishes the observed deficits (Expt-1).
We also compare deficit-fields with our prior augmentation methods to determine the added value of increased customization (Expt-2).
|
|
Eksperimentel: Deficit-fields to improve function
Here we present visual distortion of whole body movement during manual tasks during standing, including reaching, grasping, and object manipulation.
We compare the training effects of feedback based on deficit-fields versus practice with normal vision.
|
Clinicians have recognized the benefits of training on everyday tasks (Hubbard, Parsons et al. 2009), as well as practice with whole-body actions (Boehme 1988; Bohannon 1995).
However, typical robotic systems have only a single contact point and cannot drive the multiple joints involved in functional tasks.
Visual distortions (e.g. a shift, rotation or stretch) can promote adaptation even without forces.
Here we present visual distortion of whole body movement during manual tasks during standing, including reaching, grasping, and object manipulation.
We compare the training effects of feedback based on deficit-fields versus practice with normal vision.
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Arm motor recovery scores on the Fugl-Meyer
Tidsramme: Baseline at beginning of week 1 and 3 prior to intervention; post-evaluation at end of week 4; follow-up evaluation at end of week 5
|
Change from baseline in arm motor recovery as measured by Fugl-Meyer
|
Baseline at beginning of week 1 and 3 prior to intervention; post-evaluation at end of week 4; follow-up evaluation at end of week 5
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Number of blocks transferred in Box and Blocks Test
Tidsramme: Baseline at beginning of week 1 and 3 prior to intervention; post-evaluation at end of week 4; follow-up evaluation at end of week 5
|
Change from baseline in number of blocks transferred during Box and Blocks Test
|
Baseline at beginning of week 1 and 3 prior to intervention; post-evaluation at end of week 4; follow-up evaluation at end of week 5
|
|
Modified Ashworth Scale (MAS)
Tidsramme: Baseline at beginning of week 1 and 3 prior to intervention; post-evaluation at end of week 4; follow-up evaluation at end of week 5
|
Change from baseline in amount of spasticity in elbow flexors and extensors
|
Baseline at beginning of week 1 and 3 prior to intervention; post-evaluation at end of week 4; follow-up evaluation at end of week 5
|
|
Elbow active range of motion (ROM)
Tidsramme: Baseline at beginning of week 1 and 3 prior to intervention; post-evaluation at end of week 4; follow-up evaluation at end of week 5
|
Change from baseline measured in degrees for elbow flexion and extension
|
Baseline at beginning of week 1 and 3 prior to intervention; post-evaluation at end of week 4; follow-up evaluation at end of week 5
|
|
Chedoke McMaster Stroke Assessment for Hand
Tidsramme: Baseline at beginning of week 1 and 3 prior to intervention; post-evaluation at end of week 4; follow-up evaluation at end of week 5
|
Change in baseline in amount of hand motor recovery as measured by Chedoke scale
|
Baseline at beginning of week 1 and 3 prior to intervention; post-evaluation at end of week 4; follow-up evaluation at end of week 5
|
|
Time and completion score for Action Research Arm Test (ARAT)
Tidsramme: Baseline at beginning of week 1 and 3 prior to intervention; post-evaluation at end of week 4; follow-up evaluation at end of week 5
|
Change in baseline score and time for completion of functional measures as part of ARAT
|
Baseline at beginning of week 1 and 3 prior to intervention; post-evaluation at end of week 4; follow-up evaluation at end of week 5
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Samarbejdspartnere
Samarbejdspartnere
Efterforskere
Efterforskere
- Ledende efterforsker: James L Patton, PhD, Shirley Ryan Abilitylab
Publikationer og nyttige links
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- RehabilitationIC
- 2R01NS053606-05A1 (U.S. NIH-bevilling/kontrakt)
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .