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Updated: Jun 25, 2025

Brain Imaging Investigation of the Neural Correlates of Emotional Autobiographical Recollection
Published on: August 26, 2011
Visual hallucinations of autobiographical memories: a single-case study
Jesus Ramirez-Bermudez1, Maria Yoldi-Negrete1, Iris Martinez Juarez2
1Department of Neuropsychiatry, National Institute of Neurology and Neurosurgery of Mexico, Mexico City, Mexico.
Abstract:
Introduction: We report an epileptic patient who experienced hallucinatory visual experiences of autobiographical memories from her past. These visual experiences were confined to the lower left quadrant of her visual field.Methods: We carried out a single-case study that used brain-imaging, EEG and behavioural methods to study this patient.Results: We found that this patient had an incomplete left inferior homonymous quadrantanopia due to a lesion of right occipital cortex, and also that she showed neurological abnormalities in right temporal cortex, a region that is part of the brain's autobiographical-memory circuit.Conclusion: We attribute the occurrence of this patient's autobiographical-memory hallucinations to the combination of degraded visual input to right temporal cortex plus hyperexcitability of that region.
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