Evidence map›Paper›PMID 34013342›Full record

ArticleCerebral cortex (New York, N.Y. : 1991)2021

Extensive Cortical Connectivity of the Human Hippocampal Memory System: Beyond the "What" and "Where" Dual Stream Model.

Chu-Chung Huang, Edmund T Rolls, Chih-Chin Heather Hsu, Jianfeng Feng, Ching-Po Lin

Abstract read
In one paragraph

Article in Cerebral cortex (New York, N.Y. : 1991), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

48 citing papers in PubMed.

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  9. Distinct contributions of hippocampal pathways in learning regularities and exceptions revealed by functional footprints.Proceedings of the National Academy of Sciences of the United States of America · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Chu-Chung HuangKey Laboratory of Brain Functional Genomics (MOE & STCSM), Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai 200062, China.
Edmund T RollsInstitute of Science and Technology for Brain Inspired Intelligence, Fudan University, Shanghai 200433, China.
Chih-Chin Heather HsuCenter for Geriatrics and Gerontology, Taipei Veterans General Hospital, Taipei 11217, Taiwan.
Jianfeng FengInstitute of Science and Technology for Brain Inspired Intelligence, Fudan University, Shanghai 200433, China.
Ching-Po LinInstitute of Science and Technology for Brain Inspired Intelligence, Fudan University, Shanghai 200433, China.

Funding

111 Project B18015Ministry of Science and Technology MOST 108-2321-B-010-010-MY2National Key R&D Program of China 2018YFC1312904Shanghai Municipal Science and Technology Commission 2018SHZDZX01
6 · The paper itself

Abstract

The human hippocampus is involved in forming new memories: damage impairs memory. The dual stream model suggests that object "what" representations from ventral stream temporal cortex project to the hippocampus via the perirhinal and then lateral entorhinal cortex, and spatial "where" representations from the dorsal parietal stream via the parahippocampal gyrus and then medial entorhinal cortex. The hippocampus can then associate these inputs to form episodic memories of what happened where. Diffusion tractography was used to reveal the direct connections of hippocampal system areas in humans. This provides evidence that the human hippocampus has extensive direct cortical connections, with connections that bypass the entorhinal cortex to connect with the perirhinal and parahippocampal cortex, with the temporal pole, with the posterior and retrosplenial cingulate cortex, and even with early sensory cortical areas. The connections are less hierarchical and segregated than in the dual stream model. This provides a foundation for a conceptualization for how the hippocampal memory system connects with the cerebral cortex and operates in humans. One implication is that prehippocampal cortical areas such as the parahippocampal TF and TH subregions and perirhinal cortices may implement specialized computations that can benefit from inputs from the dorsal and ventral streams.

Indexed as

AdultEntorhinal CortexFemaleHippocampusHumansImage Processing, Computer-AssistedMaleMemoryMemory, EpisodicModels, NeurologicalNeural PathwaysParahippocampal GyrusPerirhinal CortexTemporal LobeYoung Adultdiffusion tractographyentorhinal cortexhippocampal connectionshippocampusmemoryparahippocampal cortex

Identifiers

PMID34013342
PMCPMC8866812

What OpenQuestion holds

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Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.