Publikationstyp: Beitrag in wissenschaftlicher Zeitschrift
Art der Begutachtung: Peer review (Publikation)
Titel: Neural coupling of cooperative hand movements : a reflex and fMRI study
Autor/-in: Dietz, Volker
Macauda, Gianluca
Schrafl-Altermatt, Miriam
Wirz, Markus
Kloter, Evelyne
Michels, Lars
DOI: 10.1093/cercor/bht285
Erschienen in: Cerebral Cortex
Band(Heft): 25
Heft: 4
Seiten: 948
Seiten bis: 958
Erscheinungsdatum: 2015
Verlag / Hrsg. Institution: Oxford University Press
ISSN: 1460-2199
1047-3211
Sprache: Englisch
Schlagwörter: Bilateral reflex responses; Hand function; Motor control; Secondary somatosensory cortex; Unilateral nerve stimulation; Adult; Biomechanical Phenomena; Brain; Brain Mapping; Electric Stimulation; Electromyography; Female; Functional Laterality; Hand; Humans; Isometric Contraction; Magnetic Resonance Imaging; Male; Movement; Muscle, Skeletal; Neural Pathways; Psychophysics; Reflex; Torque; Ulnar Nerve
Fachgebiet (DDC): 610: Medizin und Gesundheit
Zusammenfassung: The neural control of "cooperative" hand movements reflecting "opening a bottle" was explored in human subjects by electromyographic (EMG) and functional magnetic resonance imaging (fMRI) recordings. EMG responses to unilateral nonnoxious ulnar nerve stimulation were analyzed in the forearm muscles of both sides during dynamic movements against a torque applied by the right hand to a device which was compensated for by the left hand. For control, stimuli were applied while task was performed in a static/isometric mode and during bilateral synchronous pro-/supination movements. During the dynamic cooperative task, EMG responses to stimulations appeared in the right extensor and left flexor muscles, regardless of which side was stimulated. Under the control conditions, responses appeared only on the stimulated side. fMRI recordings showed a bilateral extra-activation and functional coupling of the secondary somatosensory cortex (S2) during the dynamic cooperative, but not during the control, tasks. This activation might reflect processing of shared cutaneous input during the cooperative task. Correspondingly, it is assumed that stimulation-induced unilateral volleys are processed in S2, leading to a release of EMG responses to both forearms. This indicates a task-specific neural coupling during cooperative hand movements, which has consequences for the rehabilitation of hand function in poststroke patients.
URI: https://digitalcollection.zhaw.ch/handle/11475/14539
Volltext Version: Publizierte Version
Lizenz (gemäss Verlagsvertrag): Lizenz gemäss Verlagsvertrag
Departement: Gesundheit
Organisationseinheit: Institut für Physiotherapie (IPT)
Enthalten in den Sammlungen:Publikationen Gesundheit

Dateien zu dieser Ressource:
Es gibt keine Dateien zu dieser Ressource.


Alle Ressourcen in diesem Repository sind urheberrechtlich geschützt, soweit nicht anderweitig angezeigt.