EMG-Based Hand-Wrist Control: Study B Mirrored (PSICON-B)
EMG-Based Hand-Wrist Control: Study B: Comparison of Contralateral (Mirrored) EMG-
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Intervention / Behandlung
Intervention / Behandlung
Detaillierte Beschreibung
Studientyp
Studientyp
Einschreibung (Tatsächlich)
Einschreibung
Phase
Phase
- Frühphase 1
Kontakte und Standorte
Studienorte
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Massachusetts
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Holliston, Massachusetts, Vereinigte Staaten, 01746
- Liberating Technologies, Inc
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Worcester, Massachusetts, Vereinigte Staaten, 01609
- Worcester Polytechnic Institute
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Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Inclusion Criteria:
- Limb-absent subjects: unilateral trans-radial limb absence or amputation
- Be capable of completing the requested contractions on the affected dominant side
Exclusion Criteria:
- Past injuries to the upper limbs that would limit their ability to complete the requested contractions
- Scars that would impede the use of surface electrodes
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Grundlegende Wissenschaft
- Zuteilung: Nicht randomisiert
- Interventionsmodell: Sequenzielle Zuweisung
- Maskierung: Keine (Offenes Etikett)
Anzahl der Arme
Waffen und Interventionen
Teilnehmergruppe / ArmTeilnehmergruppe / Arm |
Intervention / BehandlungIntervention / Behandlung |
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Experimental: Study B: Limb-Absent Subject
Ten unilateral transradial limb-absent subjects will each participate in one, half-day experimental session.
Subjects will be seated and prepared in test apparatus seat (16 electrodes on the affected side, hand-wrist on the able side secured to load cells).
Subjects will complete the 1-DoF and 2-DoF "dynamic" (force-varying) contractions (40-s duration, 0.75 Hz bandlimited, uniform random target).
With 2 DoF contraction trials, hand Opn-Cls will always be one of the dimensions.
The subject will then be released from the cuff and their able side not further involved in the experiment.
The force feedback triangle cursor on the computer screen will be deleted such that only the target remains.
Subjects will then repeat 1-DoF and 2-DoF trials in which the affected side attempts to produce hand-wrist effort that mimic movement of the target (with no feedback provided).
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Test apparatus acquires 16 sEMG channels, measure four DoFs of force/moment at the hand-wrist [hand open-close (Opn-Cls); wrist extension-flexion (Ext-Flx), radial-ulnar deviation (Rad-Uln) and pronation-supination (Pro-Sup)].
sEMG system used 16 custom encased bipolar electrodes.
A commercial LTI EMG amplifier (BE328) conditioned each EMG signal before A/D conversion on a PC.
A thermoplastic hand cuff secured the wrist to a six-axis load cell (AMTI, model MC3A-100) for force/moment measurement.
A separate hand-grasp one-axis load cell (Omega Engineering Inc., model LCR-150) was Velcro-secured between the fingers and the thumb, to measure power grip forces.
The PC acquired and stored the sEMG and load cell data, and commanded a triangular screen target.
The subject controlled a second triangular cursor.
Left-right movement of the cursor was controlled by wrist Ext-Flx, up-down movement by Rad-Uln deviation, cursor rotation by Pro-Sup and cursor size by hand Opn-Cls forces.
Andere Namen:
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Experimental: Study B: Able-bodied Subjects
Ten able-bodied subjects, the electrodes will be mounted on the dominant arm for the EMG-force and EMG-target tracking trials.
In addition, the non-dominant arm will also be constrained and measured in a second load cell.
This load cell will not be used for feedback during the experiment, but will compare (RMS error, off-line) the dominant vs. non-dominant forces.
For EMG-target tracking, the dominant hand will remain in the wrist cuff (to prevent flailing during contractions), with the screen feedback disabled.
These subjects will repeat the trials with the electrodes moved to the non-dominant side.
EMG-force tracking will be repeated using mirrored contractions.
The three training methods (EMG-force ipsilateral, EMG-force contralateral mirrored, EMG-target on the dominant side) will be contrasted to help understand the source of errors when training with limb-absent subjects.
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Test apparatus acquires 16 sEMG channels, measure four DoFs of force/moment at the hand-wrist [hand open-close (Opn-Cls); wrist extension-flexion (Ext-Flx), radial-ulnar deviation (Rad-Uln) and pronation-supination (Pro-Sup)].
sEMG system used 16 custom encased bipolar electrodes.
A commercial LTI EMG amplifier (BE328) conditioned each EMG signal before A/D conversion on a PC.
A thermoplastic hand cuff secured the wrist to a six-axis load cell (AMTI, model MC3A-100) for force/moment measurement.
A separate hand-grasp one-axis load cell (Omega Engineering Inc., model LCR-150) was Velcro-secured between the fingers and the thumb, to measure power grip forces.
The PC acquired and stored the sEMG and load cell data, and commanded a triangular screen target.
The subject controlled a second triangular cursor.
Left-right movement of the cursor was controlled by wrist Ext-Flx, up-down movement by Rad-Uln deviation, cursor rotation by Pro-Sup and cursor size by hand Opn-Cls forces.
Andere Namen:
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Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
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EMG-Force Models
Zeitfenster: 1 day visit
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Electromyogram waveform measurements (signal amplitude, frequency) will be related to force measurements (magnitude and moment) as related to the target tracking tasks. These signal-force data will be use to generate the models. The specific outcome for each subject will be the RMS error measured in the tracking tasks as the difference between the generated control signal from the user versus the prompted target signal, as measured by an EMG array. |
1 day visit
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Mitarbeiter und Ermittler
Sponsor
Sponsor
Mitarbeiter
Mitarbeiter
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Studienbeginn
Primärer Abschluss (Tatsächlich)
Primärer Abschluss
Studienabschluss (Tatsächlich)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- 124039
- IRB-17-155 (Andere Kennung: Worcester Polytechnic Institute)
- 5R42HD076519-03 (US NIH Stipendium/Vertrag)
Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
Produkt, das in den USA hergestellt und aus den USA exportiert wird
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