The subiculum: what it does, what it might do, and what neuroanatomy has yet to tell us
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The subiculum is a pivotal but under‐investigated structure positioned between the hippocampus proper and entorhinal and other cortices, as well as a range of subcortical structures. The subiculum has a range of electrophysiological and functional properties which are quite distinct from its input areas; given the widespread set of cortical and subcortical areas with which it interacts, it is able to influence activity in quite disparate brain regions. The rules governing plasticity of synaptic transmission in the hippocampal–subicular axis are poorly understood; this axis appears to share some properties in common with the hippocampus proper, but behaves quite differently in other respects. Equally, its functional properties are not well understood; it plays an important but ill‐defined role in spatial navigation, mnemonic processing and control of the response to stress. Here, I review investigations of synaptic plasticity in the hippocampal–subicular pathway, recordings of subicular neurons in the freely moving behaving animal, the effects of behavioural and other stressors on subicular synaptic plasticity, and anatomical data on the dorso‐ventral organization of the subiculum in relation to the hypothalamic–pituitary–adrenal (HPA) axis. I argue that there is a dorso‐ventral segregation of function within the subiculum: the dorsal component appears principally concerned with the processing of information about space, movement and memory, whereas the ventral component appears to play a major regulatory role in the inhibition of the HPA axis.
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EC provides output to the subiculum, while receives inputs from the sensory cortex including the visual cortex.
“EC provide output to the subiculum ( O'Mara, 2005), while receives inputs from the sensory cortex including the visual cortex (Kerr et al., 2007).”
From Disrupted structural connectivity in ArcAβ mouse model of Aβ amyloidosis (2020) · cites this paper as O'Mara, 2005
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- Authors
- O'Mara, S.
- Venue
- Journal of Anatomy
- Publisher
- Wiley
- Published
- 2005-09
- Volume
- 207
- Issue
- 3
- Pages
- 271-282
- ISSN
- 0021-8782 (ISSN-L)
- 1469-7580
- PMC
- PMC1571536
- OpenAlex
- W2121253132
- Cited by
- 285
- References
- 2
- Citations by year
- 2026: 13 · 2025: 20 · 2024: 26 · 2023: 14 · 2022: 11 · 2021: 16 · 2020: 22 · 2019: 20 · 2018: 20 · 2017: 19 · 2016: 21 · 2015: 9 · 2014: 12 · 2013: 15 · 2012: 8
- FWCI
- 0.49
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Journal of Anatomy (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Arrow@dit (Dublin Institute of Technology) (submittedVersion, cc-by-nc-sa)
- Trinity's Access to Research Output (TARA) (Trinity College Dublin) (submittedVersion)
- Funders
- Wellcome Trust
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
- Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
- Keywords
- subiculum, synaptic plasticity, spatial navigation, memory processes, stress response, hypothalamic-pituitary-adrenal axis, entorhinal cortex, hippocampus
- MeSH terms
- Animals, Hippocampus, Humans, Models, Neurological, Synaptic Transmission, Neuroanatomy, Neuronal Plasticity, Stress, Psychological, Prefrontal Cortex
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