Cerebellar contributions to locomotor adaptations during splitbelt treadmill walking. Export

@article{citeulike:1334548, abstract = {Locomotor adaptability ranges from the simple and fast-acting to the complex and long-lasting and is a requirement for successful mobility in an unpredictable environment. Several neural structures, including the spinal cord, brainstem, cerebellum, and motor cortex, have been implicated in the control of various types of locomotor adaptation. However, it is not known which structures control which types of adaptation and the specific mechanisms by which the appropriate adjustments are made. Here, we used a splitbelt treadmill to test cerebellar contributions to two different forms of locomotor adaptation in humans. We found that cerebellar damage does not impair the ability to make reactive feedback-driven motor adaptations, but significantly disrupts predictive feedforward motor adaptations during splitbelt treadmill locomotion. Our results speak to two important aspects of locomotor control. First, we have demonstrated that different levels of locomotor adaptability are clearly dissociable. Second, the cerebellum seems to play an essential role in predictive but not reactive locomotor adjustments. We postulate that reactive adjustments may instead be predominantly controlled by lower neural centers, such as the spinal cord or brainstem.}, address = {Department of Physical Therapy and Rehabilitation Science, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA. smorton@som.umaryland.edu}, author = {Morton, S. M. and Bastian, A. J.}, citeulike-article-id = {1334548}, citeulike-linkout-0 = {http://dx.doi.org/10.1523/JNEUROSCI.2622-06.2006}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/16957067}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=16957067}, day = {6}, doi = {10.1523/JNEUROSCI.2622-06.2006}, issn = {1529-2401}, journal = {J Neurosci}, keywords = {adaptation, cere, cerebellum, learning, motor}, month = {September}, number = {36}, pages = {9107--9116}, posted-at = {2008-11-17 21:26:13}, priority = {2}, title = {Cerebellar contributions to locomotor adaptations during splitbelt treadmill walking.}, url = {http://dx.doi.org/10.1523/JNEUROSCI.2622-06.2006}, volume = {26}, year = {2006} }

TY - JOUR ID - citeulike:1334548 L3 - citeulike-article-id:1334548 N2 - Locomotor adaptability ranges from the simple and fast-acting to the complex and long-lasting and is a requirement for successful mobility in an unpredictable environment. Several neural structures, including the spinal cord, brainstem, cerebellum, and motor cortex, have been implicated in the control of various types of locomotor adaptation. However, it is not known which structures control which types of adaptation and the specific mechanisms by which the appropriate adjustments are made. Here, we used a splitbelt treadmill to test cerebellar contributions to two different forms of locomotor adaptation in humans. We found that cerebellar damage does not impair the ability to make reactive feedback-driven motor adaptations, but significantly disrupts predictive feedforward motor adaptations during splitbelt treadmill locomotion. Our results speak to two important aspects of locomotor control. First, we have demonstrated that different levels of locomotor adaptability are clearly dissociable. Second, the cerebellum seems to play an essential role in predictive but not reactive locomotor adjustments. We postulate that reactive adjustments may instead be predominantly controlled by lower neural centers, such as the spinal cord or brainstem. IS - 36 JF - J Neurosci SN - 1529-2401 AD - Department of Physical Therapy and Rehabilitation Science, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA. smorton@som.umaryland.edu EP - 9116 TI - Cerebellar contributions to locomotor adaptations during splitbelt treadmill walking. VL - 26 SP - 9107 KW - adaptation KW - cere KW - cerebellum KW - learning KW - motor AU - Morton, SM AU - Bastian, AJ PY - 2006/09/06/ UR - http://dx.doi.org/10.1523/JNEUROSCI.2622-06.2006 ER -