Goldy Yadav1, Kathleen Y Haaland2, Pratik K Mutha1. 1. 1Center for Cognitive Science,Indian Institute of Technology Gandhinagar,Gujarat,India. 2. 2Department of Psychiatry & Behavioral Sciences and Neurology,University of New Mexico,Albuquerque,New Mexico.
Abstract
OBJECTIVES: To investigate whether the relationship between arm use and motor impairment post-stroke is influenced by the hemisphere of damage. METHODS: Right-handed patients with unilateral left hemisphere damage (LHD) or right (RHD) (n=58; 28 LHD, 30 RHD) were recruited for this study. The Arm Motor Ability Test and Functional Impact Assessment were used to derive arm use patterns. The Fugl-Meyer motor assessment scale was used to quantify the level of motor impairment. RESULTS: A significant interaction between patient group and impairment level was observed for contralesional, but not ipsilesional arm use. For lower impairment levels, contralesional (right arm for LHD and left arm for RHD) arm use was greater in LHD than RHD patients. In contrast, for greater levels of impairment, there were no arm use differences between the two patient groups. CONCLUSIONS: When motor impairment is significant, it overrides potential effects of stroke laterality on the patterns of arm use. However, a robust influence of hemisphere of damage on the patterns of arm use is evident at lower impairment levels. This may be attributed to previously described arm preference effects. These findings suggest adoption of distinct strategies for rehabilitation following left versus right hemisphere damage in right-handers, at least when the impairment is moderate to low. (JINS, 2019, 25, 470-478).
OBJECTIVES: To investigate whether the relationship between arm use and motor impairment post-stroke is influenced by the hemisphere of damage. METHODS: Right-handed patients with unilateral left hemisphere damage (LHD) or right (RHD) (n=58; 28 LHD, 30 RHD) were recruited for this study. The Arm Motor Ability Test and Functional Impact Assessment were used to derive arm use patterns. The Fugl-Meyer motor assessment scale was used to quantify the level of motor impairment. RESULTS: A significant interaction between patient group and impairment level was observed for contralesional, but not ipsilesional arm use. For lower impairment levels, contralesional (right arm for LHD and left arm for RHD) arm use was greater in LHD than RHD patients. In contrast, for greater levels of impairment, there were no arm use differences between the two patient groups. CONCLUSIONS: When motor impairment is significant, it overrides potential effects of stroke laterality on the patterns of arm use. However, a robust influence of hemisphere of damage on the patterns of arm use is evident at lower impairment levels. This may be attributed to previously described arm preference effects. These findings suggest adoption of distinct strategies for rehabilitation following left versus right hemisphere damage in right-handers, at least when the impairment is moderate to low. (JINS, 2019, 25, 470-478).
Entities:
Keywords:
Activities of Daily Living (ADL); Arm; Functional laterality; Movement; Paresis; Rehabilitation
Authors: Alexander J Barry; Kristen M Triandafilou; Mary Ellen Stoykov; Naveen Bansal; Elliot J Roth; Derek G Kamper Journal: Arch Phys Med Rehabil Date: 2020-02-28 Impact factor: 3.966
Authors: Shanie A L Jayasinghe; David Good; David A Wagstaff; Carolee Winstein; Robert L Sainburg Journal: Front Hum Neurosci Date: 2020-12-09 Impact factor: 3.169