Background: Pareidolias are visual phenomena wherein ambiguous, abstract forms or shapes appear meaningful due to incorrect perception. In Parkinson's disease (PD), patients susceptible to visual hallucinations experience visuo-perceptual deficits in the form of pareidolias. Although pareidolias necessitate top–down modulation of visual processing, the cortical dynamics of internally generated perceptual priors on these visual misperceptions is unknown.

中文翻译：

---

Prestimulus Low-Alpha Frontal Networks 与帕金森病中的视幻觉相关

背景： Pareidolias 是一种视觉现象，其中模糊、抽象的形式或形状由于不正确的感知而显得有意义。在帕金森氏病 (PD) 中，易受视幻觉影响的患者会出现幻视形式的视觉感知缺陷。尽管幻视需要对视觉处理进行自上而下的调制，但内部生成的感知先验对这些视觉误解的皮层动力学是未知的。