New York News
Using a non-invasive stimulation on the brain may be effective in reducing the frequency of visual hallucinations in blind patients, a new study has found.
A technique called “transcranial direct current stimulation” (tDCS) has been trialed on patients by researchers at Newcastle University and Kings College London, as part of the 18-month study.
The technique involves passing a weak electric current between electrodes placed on a person’s scalp and has been found to change activity levels in certain areas of the brain.
Previous research suggests that loss of information from the eyes results in increased spontaneous activity in the visual cortex, which contributes to the occurrence of visual hallucinations in Charles Bonnet Syndrome (CBS). The study aimed to use tDCS to reduce this activity and return it to normal levels.
Results from the study, which has been published in Ophthalmology, have shown that the stimulation may reduce the frequency of visual hallucinations in people with CBS, particularly individuals who have increased spontaneous activity levels in the visual parts of their brain.