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Why do stroke patients show poor limb motor function recovery?

2013-11-26
(Press-News.org) Contact information: Meng Zhao
eic@nrren.org
86-138-049-98773
Neural Regeneration Research
Why do stroke patients show poor limb motor function recovery?

Negative motor evoked potentials after cerebral infarction, indicative of poor recovery of limb motor function, tend to be accompanied by changes in fractional anisotropy values and the cerebral peduncle area on the affected side, but the characteristics of these changes have not been reported. As reported previously, the lower limit value of fractional anisotropy of the cerebral peduncle in healthy volunteers is 0.36, and the lower limit of the asymmetry of the cerebral peduncle area is 0.83. It is worth further investigating the effects of the lower limit value of the cerebral peduncle on limb motor functional recovery in stroke patients. Dr. Zhibin Song and coworkers from Xiaolan Hospital of Southern Medical University, China mainly investigated the relationship between characteristics of cerebral peduncle fractional anisotropy values and area on the affected side and limb motor function recovery in patients with negative motor evoked potential after cerebral infarction. Their results showed that the fractional anisotropy values in the cerebral peduncle in patients with negative motor evoked potentials after cerebral infarction decreased most obviously within 1 months after disease onset, and the drop critical value of fractional anisotropy value of 0.36 occurred during this time period, indicating poor limb motor function recovery; patients with negative motor evoked potentials after cerebral infarction presented with a shrunken area of the cerebral peduncle on the affected side at 6 months after disease onset, and even worse outcomes in the subsequent months until 12 months, with a lower limit value of area asymmetry of 0.83, indicating poor limb motor function recovery. These findings, published in the Neural Regeneration Research (Vol. 8, No. 29, 2013), revealed the stroke patients with negative motor evoked potential show poor limb motor function recovery.



INFORMATION:

Article: " Why do stroke patients with negative motor evoked potential show poor limb motor function recovery?" by Zhibin Song1, Lijuan Dang1, Yanling Zhou1, Yanjiang Dong1, Haimao Liang1, Zhengfeng Zhu1, Suyue Pan2 (1 Department of Neurology, Xiaolan Hospital of Southern Medical University, Zhongshan 528415, Guangdong Province, China; 2 Department of Neurology, Nanfang Hospital of Southern Medical University, Guangzhou 510515, Guangdong Province, China)

Song ZB, Dang LJ, Zhou YL, Dong YJ, Liang HM, Zhu ZF, Pan SY. Why do stroke patients with negative motor evoked potential show poor limb motor function recovery? Neural Regen Res. 2013;8(29):2713-2724.



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[Press-News.org] Why do stroke patients show poor limb motor function recovery?