Amnesia other imaging findings
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Overview
- Positron emission tomography (FDG-PET) in patients with dissociative amnesia shows hypometabolism in right inferolateral prefrontal region responsible for autobiographical memories.[1]
By performing a positron emission tomography activation study on psychogenic amnesic patients with face recognition, it was found that activation of the right anterior medial temporal region including the amygdala was increased in the patient whereas bilateral hippocampal regions increased only in the control subjects, demonstrating again that limbic and limbic-cortical functions are related to the symptoms of psychogenic amnesia.[2] Transient global amnesia is distinct in that abnormalities in the hippocampus can sometimes be visualized using a special form of magnetic resonance imaging of the brain known as diffusion-weighted imaging (DWI).
References
- ↑ Brand M, Eggers C, Reinhold N, Fujiwara E, Kessler J, Heiss WD; et al. (2009). "Functional brain imaging in 14 patients with dissociative amnesia reveals right inferolateral prefrontal hypometabolism". Psychiatry Res. 174 (1): 32–9. doi:10.1016/j.pscychresns.2009.03.008. PMID 19783409.
- ↑ Yasuno F, Nishikawa T, Nakagawa Y; et al. (2000). "Functional anatomical study of psychogenic amnesia". Psychiatry Res. 99 (1): 43–57. PMID 10891648.