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Effects of Direction and Index of Difficulty on Aiming Movements after Stroke
Joint Authors
Ribeiro Coqueiro, Paola
Alouche, Sandra Regina
de Freitas, Sandra Maria Sbeghen Ferreira
Assunção e Silva, Cassandra Mendes
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-01-28
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Background.
Brain hemispheres play different roles in the control of aiming movements that are impaired after unilateral stroke.
It is not clear whether those roles are influenced by the direction and the difficulty of the task.
Objective.
To evaluate the influence of direction and index of difficulty (ID) of the task on performance of ipsilesional aiming movements after unilateral stroke.
Methods.
Ten individuals with right hemisphere stroke, ten with left hemisphere stroke, and ten age- and gender-matched controls performed the aiming movements on a digitizing tablet as fast as possible.
Stroke individuals used their ipsilesional arm.
The direction (ipsilateral or contralateral), size (0.8 or 1.6 cm), and distance (9 or 18 cm) of the targets, presented on a monitor, were manipulated and determined to be of different ID (3.5, 4.5, and 5.5).
Results.
Individuals with right hemisphere lesion were more sensitive to ID of the task, affecting planning and final position accuracy.
Left hemisphere lesion generated slower and less smooth movements and was more influenced by target distance.
Contralateral movements and higher ID increased planning demands and hindered movement execution.
Conclusion.
Right and left hemisphere damages are differentially influenced by task constraints which suggest their complementary roles in the control of aiming movements.
American Psychological Association (APA)
Ribeiro Coqueiro, Paola& de Freitas, Sandra Maria Sbeghen Ferreira& Assunção e Silva, Cassandra Mendes& Alouche, Sandra Regina. 2014. Effects of Direction and Index of Difficulty on Aiming Movements after Stroke. Behavioural Neurology،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-507288
Modern Language Association (MLA)
Ribeiro Coqueiro, Paola…[et al.]. Effects of Direction and Index of Difficulty on Aiming Movements after Stroke. Behavioural Neurology No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-507288
American Medical Association (AMA)
Ribeiro Coqueiro, Paola& de Freitas, Sandra Maria Sbeghen Ferreira& Assunção e Silva, Cassandra Mendes& Alouche, Sandra Regina. Effects of Direction and Index of Difficulty on Aiming Movements after Stroke. Behavioural Neurology. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-507288
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-507288