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

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2009
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Hamzei, Farsin
Weiller, Cornelius
Schoenfeld, Mircea Ariel
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Journal of Neurology. 2009, 256(Suppl. 2), pp. S32
Zusammenfassung

Objectives: The application of the mirror neuron system (MNS) has
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.
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.
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.
Conclusion: This study confirms that action observation has facilitatory
effects in the affected and non-affected hemispheres, respectively. Data support applicability of video-therapy in stroke patients.
1. Kimberley TJ et al (2006) Neurorehabilitation and Neural Repair 20:268 277
2. Stinear CM et al (2007) Clin Neurophysiol 118:1794 1801

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ISO 690NEDELKO, 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. 2009, 256(Suppl. 2), pp. S32
BibTex
@article{Nedelko2009Actio-1324,
  year={2009},
  title={Action observation and imagery conducted with stroke patients stimulate both hemispheres : the affected and non-affected},
  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}
}
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    <dcterms:abstract xml:lang="eng">Objectives: The application of the mirror neuron system (MNS) has&lt;br /&gt;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.&lt;br /&gt;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.&lt;br /&gt;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.&lt;br /&gt;Conclusion: This study confirms that action observation has facilitatory&lt;br /&gt;effects in the affected and non-affected hemispheres, respectively. Data support applicability of video-therapy in stroke patients.&lt;br /&gt;1. Kimberley TJ et al (2006) Neurorehabilitation and Neural Repair 20:268 277&lt;br /&gt;2. Stinear CM et al (2007) Clin Neurophysiol 118:1794 1801</dcterms:abstract>
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