That's the question we try to answer Kartheek BR and colleagues on an interesting review published in late 2013 in the International Journal of Pharmaceutical & Biological Archives .
There are many different diseases in which visual hallucinations occur , such as schizophrenia, Parkinson and the Alzheime r among the best known, but also in others such as Creutzfeldt Jacob disease (the disease known as 'mad cow' ) or dementia with Lewy bodies.
According to the authors, the presence of such phenomena would have a neural basis , specifically related to atrophy of brain areas devoted to visual perception, such as the parietal areas.
In a more recent work found in Progress in Neurobiology (2014), various Australian researchers make an interesting distinction between different types of hallucinations and their relationship to brain networks of attention.
Differentiate between simple visual hallucinations in which attention is not involved in regulating the perceptual process; complex visual hallucinations that are supposedly related to a change in control networks of care (lead to misinterpretation of ambiguous percepts); and finally, complex visual hallucinations without conscience or feeling that you have, which seem to be associated with decreased activity of the dorsal attention network in which are involved the frontal cortex and dorsal posterior parietal.
Best of understanding of the phenomenon is to remove the stigma that has always been associated and to generate appropriate intervention strategies, such as training in attentional control and inhibition , which may improve this symptom in some cases and deserves more research.
There are many different diseases in which visual hallucinations occur , such as schizophrenia, Parkinson and the Alzheime r among the best known, but also in others such as Creutzfeldt Jacob disease (the disease known as 'mad cow' ) or dementia with Lewy bodies.
According to the authors, the presence of such phenomena would have a neural basis , specifically related to atrophy of brain areas devoted to visual perception, such as the parietal areas.
In a more recent work found in Progress in Neurobiology (2014), various Australian researchers make an interesting distinction between different types of hallucinations and their relationship to brain networks of attention.
Differentiate between simple visual hallucinations in which attention is not involved in regulating the perceptual process; complex visual hallucinations that are supposedly related to a change in control networks of care (lead to misinterpretation of ambiguous percepts); and finally, complex visual hallucinations without conscience or feeling that you have, which seem to be associated with decreased activity of the dorsal attention network in which are involved the frontal cortex and dorsal posterior parietal.
Best of understanding of the phenomenon is to remove the stigma that has always been associated and to generate appropriate intervention strategies, such as training in attentional control and inhibition , which may improve this symptom in some cases and deserves more research.
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