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Updated: Mar 2, 2026
11:30
Brain Imaging Investigation of the Neural Correlates of Emotional Autobiographical Recollection
Published on: August 26, 2011
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Two years later - Revisiting autobiographical memory representations in vmPFC and hippocampus
Heidi M Bonnici1, Eleanor A Maguire2
1School of Psychology, University of East Anglia, Norwich NR4 7TJ, UK.
Neuropsychologia
|May 16, 2017
Summary
Autobiographical memories consolidate in the ventromedial prefrontal cortex (vmPFC) within two years. This longitudinal study shows memory representations stabilize in the vmPFC over time.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Brain Imaging
Background:
- Autobiographical memory representation in the brain is a key question in neuroscience.
- Previous fMRI studies indicated remote memories are represented in the ventromedial prefrontal cortex (vmPFC) and posterior hippocampus.
Purpose of the Study:
- To investigate the longitudinal changes in the neural representation of autobiographical memories.
- To determine the timeframe for memory consolidation within specific brain regions.
Main Methods:
- A longitudinal fMRI study involving participants recalling memories after a two-year interval.
- High-resolution multivoxel pattern analysis (MVPA) was used to analyze brain activity.
Main Results:
- Memory representations in the vmPFC and posterior hippocampus did not change between 2 and 12 years post-encoding.
- Representations of 2-week-old memories became more detectable in the vmPFC after two years, indicating consolidation.
Conclusions:
- Autobiographical memory representations stabilize in the vmPFC within two years after encoding.
- Consolidation of autobiographical memories involves a shift towards vmPFC representation.
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