Seeing visual hallucinations with functional magnetic resonanceimaging
R. Howard
Bok Engelsk 1997
| Utgitt | 1997
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| Opplysninger | We have used blood oxygenation level dependent imaging withfunctional magnetic resonance imaging (fMRI) to investigate thevisual cortex response to photic stimulation during and in theabsence of continuous visual hallucinations. A patient with corticalLewy body dementia who experienced persistent and vivid complexhallucinations underwent fMRI on and off treatment with risperidone.When he was not hallucinating, photic stimulation produced a normalbilateral activation in striate cortex. During hallucinations, verylimited activation in striate cortex could be induced. We interpretthis result as indicating that at least part of the activity in thebrain responsible for the experience of visual hallucinations islocated in the primary visual cortex.
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| Emner |
