Title |
Hemicerebellitis can drive handedness shift
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Published in |
Cerebellum & Ataxias, September 2017
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DOI | 10.1186/s40673-017-0074-6 |
Pubmed ID | |
Authors |
Mario Mascalchi, Matteo Lenge, Andrea Bianchi, Emanuele Bartolini, Gioele Gavazzi, Flavio Giordano, Renzo Guerrini |
Abstract |
Hemicerebellitisis a rare acquired condition, typical of the pediatric age. A residual switched handedness may develop after remission of acute cerebellar symptoms. Herein we describe a motor functional MRI studyperformed in a 35-year old girl who had switched to left-handedness after acute right hemicerebellitis in childhood. During left hand tapping, we observed activation in the right primary sensori-motor cortex, right supplementary motor area and left superior cerebellum. During right hand tapping bilateral activations of primary sensori-motorcortex and superior cerebellum including the vermis and activation of the right supplementary motor area were observed. We speculate that during right hand tapping both the ipsilateral and contralateralpre-central gyri and the ipsilateral cerebellum would be engaged in order to recover the tapping internal model of action. From this perspective the ipsilateral pre-central gyrus might serve as are transmission station of information from the healthy cerebellum to the contralateral pre-central gyrus. Selective damage of the right half of the cerebellum due to hemicerebellitis in childhood can drive shift of lateralized hand functions in the cerebrum. |
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