Journals / Türk Nöroloji Dergisi / 2011 / Cilt: 17 - Sayı: 3

Visual hallucination, visual evoked potentials and cognitive dysfunction in idiopathic Parkinson’s disease

İdiyopatik Parkinson hastalığında görsel halüsinasyonlar, görsel uyandırılmış potansiyeller ve kognitif disfonksiyon

Pages
143–149
Publication Date
2022-11-05
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

VEP studies before and after dopaminergic therapy may be useful to understand the contribution of VEP investigations on the etiopathogenesis of VHs in IPD.

📌 3 Key Takeaways

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Objective & Hypothesis:OBJECTIVE: In this study, we aimed to investigate the relation between possible visual evoked potentials (VEP) pathologies and visual hallucinations (VH) seen in idiopathic Parkinson’s disease (IPD) and the role of cognitive dysfunctions in VHs, moving through visual processing defect considered to be related to VHs could be demonstrated with VEP to some extent.
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Key Findings & Data:Group 1 included 14 IPD patients with VH and a mean age of 65.31 ± 7.49 years, while Group 2 (as control group) included 12 IPD patients without VH and a mean age of 68.17 ± 7.46 years.
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Conclusion & Impact:VEP studies before and after dopaminergic therapy may be useful to understand the contribution of VEP investigations on the etiopathogenesis of VHs in IPD.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

OBJECTIVE: In this study, we aimed to investigate the relation between possible visual evoked potentials (VEP) pathologies and visual hallucinations (VH) seen in idiopathic Parkinson’s disease (IPD) and the role of cognitive dysfunctions in VHs, moving through visual processing defect considered to be related to VHs could be demonstrated with VEP to some extent. METHODS: Two groups followed in the Movement Disorders outpatient clinic of Haseki Training and Research Hospital were included in our study. Group 1 included 14 IPD patients with VH and a mean age of 65.31 ± 7.49 years, while Group 2 (as control group) included 12 IPD patients without VH and a mean age of 68.17 ± 7.46 years. RESULTS: : While dosage of levodopa was found to be significantly higher in the group with VH (p= 0.048), it was observed that Unified Parkinson's Disease Rating Scale (UPDRS) cognitive scores were also significantly greater in this group (p< 0.001). No difference was observed between the two groups regarding the rate of pathological VEP latency (p= 0.64). In our study, Stroop Color-Word Test, among other executive functioning tests, was statistically significantly worse for duration/error in the group with VH (p= 0.016/0.003). CONCLUSION: In Group 1, VEP results may have been worse due to the higher dosage of levodopa and higher UPDRS cognitive scores. VEP studies before and after dopaminergic therapy may be useful to understand the contribution of VEP investigations on the etiopathogenesis of VHs in IPD.

Özet

AMAÇ: Bu çalışmada görsel halüsinasyonların ilişkili olduğu düşünülen vizüel işlemleme defektinin belirli bir düzeye kadar görsel uyandırılmış potansiyeller [Visual Evoked Potentials (VEP)] ile gösterilebilir olmasından yola çıkarak, olası VEP patolojilerinin idiyopatik Parkinson hastalığında görülen görsel halüsinasyonlarla olası ilişkisini değerlendirmeyi ve kognitif disfonksiyonun rolünü araştırmayı amaçladık. YÖNTEMLER: Çalışmamıza, SB Haseki Eğitim ve Araştırma Hastanesi Hareket Bozuklukları Polikliniğinde takip edilen; ortalama 65.31 ± 7.49 yaşlarında görsel halüsinasyonları olan 14 idiyopatik Parkinson hastası (grup 1) ve kontrol grubu olarak ortalama 68.17 ± 7.46 yaşlarında görsel halüsinasyonları olmayan 12 idiyopatik Parkinson hastası (grup 2) alındı. BULGULAR: Levodopa dozu, görsel halüsinasyonları pozitif olanlarda anlamlı derecede yüksek olarak bulunurken (p= 0.048), yine bu grupta Bileşik Parkinson Hastalığı Değerlendirme Ölçeği kognitif skorlarının anlamlı olarak daha yüksek olduğu gözlendi (p< 0.001). Patolojik VEP latansı oranı açısından iki grup arasında anlamlı fark bulunmadı (p= 0.64). Görsel halüsinasyonları pozitif olan grupta yürütücü fonksiyon testlerinden Stroop süre/hata istatistiksel açıdan anlamlı derecede kötüydü (p= 0.016/0.003). SONUÇ: Grup 1’de levodopa dozunun ve kognitif skorların daha yüksek olması VEP sonuçlarının bozulmasına neden olmuş olabilir. Görsel iletiyi değerlendirmek üzere yapılan VEP incelemesinin idiyopatik Parkinson hastalığındaki görsel halüsinasyonların etyopatogenezine katkısını anlamak için dopaminerjik tedavi öncesi ve sonrasında yapılmış VEP incelemelerini içeren çalışmalar daha faydalı olabilir

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Cite This Article

ÖZER, F., ÇETİN, S., ÖZBEN, S., AYDEMİR, T. Ö., ÇINARLI, G. G., ACAR, H. (2022). Visual hallucination, visual evoked potentials and cognitive dysfunction in idiopathic Parkinson’s disease. Türk Nöroloji Dergisi, Cilt: 17 - Sayı: 3, 143–149. https://ajindex.com/articles/636956

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