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Action observation and imagery conducted with stroke patients stimulate both hemispheres : the affected and non-affected

Action observation and imagery conducted with stroke patients stimulate both hemispheres : the affected and non-affected

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NEDELKO, Violetta, Thomas HASSA, Farsin HAMZEI, Cornelius WEILLER, Mircea Ariel SCHOENFELD, Christian DETTMERS, 2009. Action observation and imagery conducted with stroke patients stimulate both hemispheres : the affected and non-affected. In: Journal of Neurology. 256(Suppl. 2), pp. S32

@article{Nedelko2009Actio-1324, title={Action observation and imagery conducted with stroke patients stimulate both hemispheres : the affected and non-affected}, year={2009}, number={Suppl. 2}, volume={256}, journal={Journal of Neurology}, author={Nedelko, Violetta and Hassa, Thomas and Hamzei, Farsin and Weiller, Cornelius and Schoenfeld, Mircea Ariel and Dettmers, Christian} }

Nedelko, Violetta Schoenfeld, Mircea Ariel 2011-03-23T09:24:48Z Nedelko, Violetta Publ. in: Journal of Neurology 256 (2009), Suppl. 2, pp. S32 Schoenfeld, Mircea Ariel Hassa, Thomas Action observation and imagery conducted with stroke patients stimulate both hemispheres : the affected and non-affected Hassa, Thomas Dettmers, Christian Weiller, Cornelius Objectives: The application of the mirror neuron system (MNS) has<br />extended into the field of stroke rehabilitation through mirror- or video therapy. Current literature has demonstrated that action observation exclusively or predominantly stimulates the non-affected hemisphere [1, 2]. The aim of this study was to use the fMRI (functional magnetic imaging) to investigate whether the affected and non-affected hemispheres are stimulated to the same extent during action observation and imagery conducted in stroke patients.<br />Methods: fMRI in block design applying action observation or action imagery with open eyes. Stimuli consisted of object-related, simple hand actions. Eight right hemispheric and eight left hemispheric stroke patients with incomplete hand pareses participated in the study.<br />Results: Action observation as well as simultaneous action observation and imagery induced activation in a well known network of occipital, superior and inferior parietal and dorsolateral and ventrolateral premotor cortical areas. Cortical activation encompassed a symmetrical bilateral pattern: the affected hemispheres were stimulated to the same degree as the non-affected hemisphere.<br />Conclusion: This study confirms that action observation has facilitatory<br />effects in the affected and non-affected hemispheres, respectively. Data support applicability of video-therapy in stroke patients.<br />1. Kimberley TJ et al (2006) Neurorehabilitation and Neural Repair 20:268 277<br />2. Stinear CM et al (2007) Clin Neurophysiol 118:1794 1801 2011-03-23T09:24:48Z Hamzei, Farsin Hamzei, Farsin Dettmers, Christian eng deposit-license Weiller, Cornelius 2009

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