TY - JOUR
T1 - Developmental and acquired brain injury have opposite effects on finger coordination in children
AU - Mimouni-Bloch, Aviva
AU - Shaklai, Sharon
AU - Levin, Moran
AU - Ingber, Moria
AU - Karolitsky, Tanya
AU - Grunbaum, Sigal
AU - Friedman, Jason
N1 - Publisher Copyright:
Copyright © 2023 Mimouni-Bloch, Shaklai, Levin, Ingber, Karolitsky, Grunbaum and Friedman.
PY - 2023/1/23
Y1 - 2023/1/23
N2 - The ability to coordinate finger forces to dexterously perform tasks develops in children as they grow older. Following brain injury, either developmental (as in cerebral palsy–CP) or acquired (as in traumatic brain injury—TBI), this developmental trajectory will likely be impaired. In this study, we compared finger coordination in a group of children aged 4–12 with CP and TBI to a group of typically developing children using an isometric pressing task. As expected, deficits were observed in functional tests (Jebsen Taylor test of hand function, Box and Block test) for both groups, and children in both groups performed the pressing task less well than the control group. However, differing results were observed between the CP and TBI groups when using the uncontrolled manifold hypothesis to look at the synergy index. This index measures the relative amount of “good” (does not affect the outcome measure) and “bad” (does affect the outcome measure) variability, where in this case the outcome measure is the total force produced by the fingers. While children with CP were more variable in their performance, their synergy index was not significantly different from typically developing children, suggesting the development of compensatory strategies. In contrast, the children following TBI showed performance that got worse as a function of age (i.e., the older children with TBI performed worse than the younger children with TBI). These differences between the groups may be a result of different areas of brain injury typically observed in CP and TBI, and the different amount of time that has passed since the injury.
AB - The ability to coordinate finger forces to dexterously perform tasks develops in children as they grow older. Following brain injury, either developmental (as in cerebral palsy–CP) or acquired (as in traumatic brain injury—TBI), this developmental trajectory will likely be impaired. In this study, we compared finger coordination in a group of children aged 4–12 with CP and TBI to a group of typically developing children using an isometric pressing task. As expected, deficits were observed in functional tests (Jebsen Taylor test of hand function, Box and Block test) for both groups, and children in both groups performed the pressing task less well than the control group. However, differing results were observed between the CP and TBI groups when using the uncontrolled manifold hypothesis to look at the synergy index. This index measures the relative amount of “good” (does not affect the outcome measure) and “bad” (does affect the outcome measure) variability, where in this case the outcome measure is the total force produced by the fingers. While children with CP were more variable in their performance, their synergy index was not significantly different from typically developing children, suggesting the development of compensatory strategies. In contrast, the children following TBI showed performance that got worse as a function of age (i.e., the older children with TBI performed worse than the younger children with TBI). These differences between the groups may be a result of different areas of brain injury typically observed in CP and TBI, and the different amount of time that has passed since the injury.
KW - cerebral palsy
KW - children
KW - coordination
KW - development
KW - fingers
KW - force
KW - traumatic brain injury
KW - uncontrolled manifold hypothesis
UR - http://www.scopus.com/inward/record.url?scp=85147426002&partnerID=8YFLogxK
U2 - 10.3389/fnhum.2023.1083304
DO - 10.3389/fnhum.2023.1083304
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C2 - 36755895
AN - SCOPUS:85147426002
SN - 1662-5161
VL - 17
JO - Frontiers in Human Neuroscience
JF - Frontiers in Human Neuroscience
M1 - 1083304
ER -