scholarly journals Complex visual hallucinatory experience in an elderly blind woman with glaucoma: revisiting Charles Bonnet syndrome

2018 ◽  
Vol 6 (5) ◽  
pp. 859-862
Author(s):  
Azan A. Nyundo ◽  
Innocent R. Mwombeki
Keyword(s):  
Hallucinatory Experience ◽  
Charles Bonnet Syndrome

HALLUCINATORY EXPERIENCES IN VISUALLY IMPAIRED INDIVIDUALS: CHARLES BONNET SYNDROME – IMPLICATIONS FOR RESEARCH AND CLINICAL PRACTICE

2018 ◽  
Vol 30 (2) ◽  
pp. 122-128 ◽  
Author(s):  
Darija Jurisic ◽  
◽  
Irena Sesar ◽  
Ivan Cavar ◽  
Antonio Sesar ◽  
...  
Keyword(s):  
Clinical Practice ◽  
Visually Impaired ◽  
Charles Bonnet Syndrome

FDG-PET Scanning Shows Distributed Changes in Cortical Activity Associated with Visual Hallucinations in Eye Disease

2019 ◽  
Vol 19 (1) ◽  
pp. 84-89 ◽  
Author(s):  
Lütfü Hanoglu ◽  
Sultan Yildiz ◽  
Tansel Cakir ◽  
Taha Hanoglu ◽  
Burak Yulug
Keyword(s):  
Visual Cortex ◽  
Fdg Pet ◽  
Underlying Mechanism ◽  
Posterior Cingulate Cortex ◽  
Eye Disease ◽  
Visual Hallucinations ◽  
Charles Bonnet Syndrome ◽  
Pet Scanning ◽  
Inferior Parietal Cortex ◽  
Visual Deafferentation

Background and Objective: Charles Bonnet Syndrome (CBS) has been defined as complex visual hallucinations (CVH) due to visual loss. The underlying mechanism of CBS is not clear and the underlying pathophysiology of the visual hallucinations in CBS patients and pure visually impaired patients is still not clear. </P><P> Methods: In our study, we have scanned three patients with eye disease and CBS (VH+) and three patients with eye disease without CBS (VH-) using FDG-PET. Results: Our results showed underactivity in the pons and overactivity in primary right left visual cortex and inferior parietal cortex in VH- patients and underactivity in left Broca, left inf frontal primary visual cortex and anterior and posterior cingulate cortex in VH+ patients relative to the normative 18FFDG PET data that was taken from the database consisting of 50 age-matched healthy adults without neuropsychiatric disorders. Conclusion: From this distributed pattern of activity changes, we conclude that the generation of visual hallucination in CBS is associated with bottom-up and top-down mechanism rather than the generally accepted visual deafferentation-related hyperexcitability theory.

scholarly journals An overview of psychological and social factors in Charles Bonnet syndrome

2021 ◽  
Vol 13 ◽  
pp. 251584142110347
Author(s):  
Lee Jones ◽  
Lara Ditzel-Finn ◽  
Jamie Enoch ◽  
Mariya Moosajee
Keyword(s):  
Emotional Response ◽  
Causal Mechanism ◽  
Visual Hallucinations ◽  
Cognitively Normal ◽  
Charles Bonnet Syndrome ◽  
Raising Awareness ◽  
Normal Individuals ◽  
The Social ◽  
Recent Developments ◽  
Insight Into

Charles Bonnet syndrome (CBS) is a condition where cognitively normal individuals with sight impairment experience simple and/or complex visual hallucinations. The exact pathogenesis of CBS is unknown; however, deafferentation is often recognised as a causal mechanism. Studies have provided insight into the multifaceted impact of CBS on wellbeing. Onset of CBS may cause distress among those believing visual hallucinations are indicative of a neurological condition. Hallucinatory content is often congruent with the emotional response. For example, hallucinations of a macabre nature typically result in a fearful response. Visual hallucinations may be highly disruptive, causing everyday tasks to become challenging. Clinical management relies on forewarning and pre-emptive questioning. Yet, knowledge and awareness of CBS is typically low. In this review, we provide a summary of the social and psychological implications of CBS and explore recent developments aimed at raising awareness and improving patient management.

Musical hallucinosis: auditory Charles Bonnet syndrome?

1994 ◽  
Vol 11 (1) ◽  
pp. 29-29 ◽  
Author(s):  
Gary Hosty
Keyword(s):  
Charles Bonnet Syndrome

AbstractA case of musical hallucinosis is presented, which failed to respond to neuroleptics but responded to carbamazepine. Parallels with the Charles Bonnet syndrome are discussed.

scholarly journals Charles Bonnet Syndrome in an Elderly Patient Following Cataract Surgery

2017 ◽  
Vol 20 (4) ◽  
Author(s):  
Akinboyede Akinyemi ◽  
Luis Dabul ◽  
Erik Cabrera ◽  
Laura Akinyemi ◽  
Juan Oms ◽  
...  
Keyword(s):  
Elderly Patient ◽  
Cataract Surgery ◽  
Charles Bonnet Syndrome
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