Journal
NEUROSCIENCE
Volume 141, Issue 3, Pages 1315-1326Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuroscience.2006.04.081
Keywords
neonatal brain injury; forelimb reaching; complex housing; intracortical microstimulation; sex; recovery
Categories
Ask authors/readers for more resources
One of the most common, and disruptive, neurological symptoms following neonatal brain injury is a motor impairment. Neonatal medial frontal cortical lesions in rats produce enduring motor impairments,. and it is thought that lesion-induced abnormal cortical morphology and connectivity may underlie the motor deficits. In order to investigate the functional consequences of the lesion-induced anatomical abnormalities in adulthood, we used intracortical microstimulation to determine the neurophysiologic organization of motor maps within the lesion hemisphere. In addition, groups of neonatal lesion rats were given reach training or complex housing rehabilitation in adulthood and then mapped with intracortical microstimulation. The results demonstrate that neonatal medial frontal cortex lesions produce motor deficits in adulthood that are associated with abnormal motor maps. Further, adult behavioral treatment promoted partial recovery that was supported by reorganization of the motor maps whereby there were increases in the size of the forelimb motor maps. The experience-induced expansion of the forelimb motor maps in adulthood provides a neural mechanism for the experience-dependent improvements in motor performance. (c) 2006 IBRO. Published by Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available