When stroke occurs in adulthood, mirror movements (MMs: involuntary movements occurring in one hand when performing unilateral movements with the contralateral hand) in the paretic hand rarely occur. We present a case of an apparently healthy 54-year-old male presenting MMs in his left (non-dominant) hand. Further evaluation revealed diminished strength and dexterity in left hand, increased spinal excitability, decreased corticospinal excitability, occurrence of ipsilateral motor responses, enlarged cortical motor representation and imaging findings consistent with a previously undiagnosed right-subcortical stroke. MMs and ipsilateral motor responses may reflect the increased spinal motor neurons' excitability sustained by the spared non-primary ipsilesional motor areas.
Mirror movements after stroke suggest facilitation from non primary motor cortex: a case report / A. Caronni, L. Sciumé, V. Ferpozzi, V. Blasi, A. Castellano, A. Falini, L. Perucca, G. Cerri. - In: PM & R. - ISSN 1934-1482. - 8:5(2016), pp. 479-483. [10.1016/j.pmrj.2015.10.009]
Mirror movements after stroke suggest facilitation from non primary motor cortex: a case report
A. Caronni
;L. SciuméSecondo
;V. Ferpozzi;A. Castellano;L. PeruccaPenultimo
;G. CerriUltimo
2016
Abstract
When stroke occurs in adulthood, mirror movements (MMs: involuntary movements occurring in one hand when performing unilateral movements with the contralateral hand) in the paretic hand rarely occur. We present a case of an apparently healthy 54-year-old male presenting MMs in his left (non-dominant) hand. Further evaluation revealed diminished strength and dexterity in left hand, increased spinal excitability, decreased corticospinal excitability, occurrence of ipsilateral motor responses, enlarged cortical motor representation and imaging findings consistent with a previously undiagnosed right-subcortical stroke. MMs and ipsilateral motor responses may reflect the increased spinal motor neurons' excitability sustained by the spared non-primary ipsilesional motor areas.File | Dimensione | Formato | |
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