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Published on: November 14, 2018
Imagining fictitious and future experiences: evidence from developmental amnesia
Eleanor A Maguire1, Faraneh Vargha-Khadem, Demis Hassabis
1Wellcome Trust Centre for Neuroimaging, Institute of Neurology, University College London, London, UK. e.maguire@fil.ion.ucl.ac.uk
Neuropsychologia
|July 7, 2010
Summary
Patients with hippocampal damage can still imagine future events. This study found that individuals with developmental amnesia and hippocampal volume loss can construct rich, spatially coherent future scenarios, suggesting preserved function.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Neuroimaging
Background:
- Bilateral hippocampal damage typically impairs memory and imagination.
- Previous research indicated that adult-acquired amnesia patients with hippocampal damage struggle with imagining future and fictitious events.
Observation:
- Patient P01, with adult-acquired amnesia and significant hippocampal damage, showed preserved ability to imagine future and fictitious experiences.
- A second patient, Jon, with developmental amnesia and similar hippocampal pathology, also demonstrated intact imagination capabilities.
- Both patients retained some recognition memory and exhibited hippocampal activation during functional magnetic resonance imaging (fMRI).
Findings:
- Jon, unlike patients with adult-acquired amnesia, could richly imagine fictitious and future scenarios comparable to control participants.
- His imagined constructions were spatially coherent, indicating preserved visuospatial and imaginative functions.
- The findings challenge the notion that hippocampal integrity is essential for all forms of future imagination.
Implications:
- Residual hippocampal function, even with significant damage, may support imagination.
- Developmental amnesia may have different cognitive consequences than adult-acquired amnesia regarding imagination.
- This research opens avenues for understanding the neural basis of imagination and memory in amnesic patients.
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