Clin Neurophysiol:无听力损失的慢性中风患者的中央听觉处理研究

2020-04-12 AlexYang MedSci原创

非听觉区域的中风损伤可能影响更高阶的听觉处理。最近,有研究人使用员听觉诱发反应(AERs)与病变和感知指标在慢性中风幸存者中鉴定了听觉功能情况。

非听觉区域的中风损伤可能影响更高阶的听觉处理。最近,有研究人使用员听觉诱发反应(AERs)与病变和感知指标在慢性中风幸存者中鉴定了听觉功能情况。

研究包括了29名中风患者和14名对照,并记录了AERs。研究发现,虽然他们的听力正常,8名患者表现出了单侧的AER,且与受影响的手处于同侧,其强度与双侧AERs相比减少。两个小组均表现出了较晚组分的衰减。AERs来源的半球不对称性在双侧AER患者总减少。N1波(100ms延迟)和P2(200ms)在基底神经节和白质病变的个体中延迟,而注意网络神经中的病变则减少了频率-MMN(失配负性)响应,增加了基频轮廓P3a响应。另外,患者的噪音言语感知能力受损可用AER测量和频率偏差检测表现通过多元回归来进行解释。

最后,研究人员指出,AERs能够反应由于颞叶外损坏引起的听觉功能损伤,并进一步的解释高阶听觉认知神经机制的复杂性。

原始出处:

Fujioka T, Freigang C, Honjo K et al. Central auditory processing in adults with chronic stroke without hearing loss: A magnetoencephalography study. Clin Neurophysiol. 2020.

 

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    2020-04-14 ysjykql
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    2020-04-12 guging

    中风是俗称,应该称为缺血性卒中吧

    0

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