Evidence map›Paper›PMID 26832921›Full record

ArticleBrain structure & function2017

Fornix deep brain stimulation induced long-term spatial memory independent of hippocampal neurogenesis.

Sarah Hescham, Yasin Temel, Sandra Schipper, Mélanie Lagiere, Lisa-Maria Schönfeld, Arjan Blokland, Ali Jahanshahi

Open access · hybridAbstract read
In one paragraph

Article in Brain structure & function, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
3.4field-weighted citation impact, top 8% of its field
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

15 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
  2. Temporal Interference Stimulation Enhances Neural Regeneration.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  3. Article
  4. Review
  5. Review
  6. New Targets and New Technologies in the Treatment of Parkinson's Disease: A Narrative Review.International journal of environmental research and public health · 2022
    Review
  7. Article
  8. Prelimbic Cortical Stimulation Improves Spatial Memory Through Distinct Patterns of Hippocampal Gene Expression in Aged Rats.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2020
    Article
  9. Review
  10. Review
  11. Article
  12. Deep brain stimulation: potential for neuroprotection.Annals of clinical and translational neurology · 2019
    Review
  13. Article
  14. Article
  15. Article
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

7 authors at 2 institutions in 2 countries.

Sarah HeschamDepartment of Neuroscience, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands. sarah.hescham@maastrichtuniversity.nl.
Yasin TemelDepartment of Neuroscience, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands.
Sandra SchipperDepartment of Neuroscience, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands.
Mélanie LagiereDepartment of Neuroscience, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands.
Lisa-Maria SchönfeldDepartment of Neuroscience, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands.
Arjan BloklandDepartment of Neuropsychology and Psychopharmacology, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands.
Ali JahanshahiDepartment of Neuroscience, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands.
Maastricht University · NLEuropean Graduate School of Neuroscience · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Deep brain stimulation (DBS) is an established symptomatic treatment modality for movement disorders and constitutes an emerging therapeutic approach for the treatment of memory impairment. In line with this, fornix DBS has shown to ameliorate cognitive decline associated with dementia. Nonetheless, mechanisms mediating clinical effects in demented patients or patients with other neurological disorders are largely unknown. There is evidence that DBS is able to modulate neurophysiological activity in targeted brain regions. We therefore hypothesized that DBS might be able to influence cognitive function via activity-dependent regulation of hippocampal neurogenesis. Using stimulation parameters, which were validated to restore memory loss in a previous behavioral study, we here assessed long-term effects of fornix DBS. To do so, we injected the thymidine analog, 5-bromo-2'-deoxyuridine (BrdU), after DBS and perfused the animals 6.5 weeks later. A week prior to perfusion, memory performance was assessed in the water maze. We found that acute stimulation of the fornix improved spatial memory performance in the water maze when the probe trial was performed 1 h after the last training session. However, no evidence for stimulation-induced neurogenesis was found in fornix DBS rats when compared to sham. Our results suggest that fornix DBS improves memory functions independent of hippocampal neurogenesis, possibly through other mechanisms such as synaptic plasticity and acute neurotransmitter release.

Indexed as

NeurogenesisAnimalsCell CountElectric StimulationFornix, BrainHippocampusMaze LearningMemory, Long-TermRatsRats, Sprague-DawleySpatial MemoryDeep brain stimulationFornixHippocampusMemoryNeurogenesis

Identifiers

PMID26832921
PMCPMC5334384
OpenAlexW2267352524

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.