Evidence map›Paper›PMID 33563242›Full record

ArticleBMC psychiatry2021

Targeting hippocampal hyperactivity with real-time fMRI neurofeedback: protocol of a single-blind randomized controlled trial in mild cognitive impairment.

Katharina Klink, Urs Jaun, Andrea Federspiel, Marina Wunderlin, Charlotte E Teunissen, Claus Kiefer, Roland Wiest, Frank Scharnowski, Ronald Sladky, Amelie Haugg and 2 more

Registry-linked trialOpen access · goldAbstract readClinical Trial Protocol
In one paragraph

Article in BMC psychiatry, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04020744 (Targeting Hippocampal Hyperactivity With Real-time Functional MRI Based Neurofeedback in Elderly Individuals With and Without Memory Problems), which is not on this map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
2.3field-weighted citation impact, top 13% 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.

NCT04020744 nacompletednot on this map

Targeting Hippocampal Hyperactivity With Real-time Functional MRI Based Neurofeedback in Elderly Individuals With and Without Memory Problems

TypeinterventionalSponsorUniversity of BernRan2020 to 2024Enrolled84ConditionsMild Cognitive ImpairmentArmsreal-time fMRI based neurofeedback from the hippocampus, real-time fMRI based neurofeedback from another brain area
3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 22 citations in OpenAlex.

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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

12 authors at 4 institutions in 4 countries.

Katharina KlinkUniversity Hospital of Old Age Psychiatry and Psychotherapy, Bern University, Bern, Switzerland.
Urs JaunDepartment of Technology and Innovation, Inselgruppe AG, Bern University, Bern, Switzerland.
Andrea FederspielTranslational Research Center, University Hospital of Psychiatry and Psychotherapy, Bern University, Bern, Switzerland.
Marina WunderlinUniversity Hospital of Old Age Psychiatry and Psychotherapy, Bern University, Bern, Switzerland.
Charlotte E TeunissenNeurochemistry Laboratory, Department of Clinical Chemistry, Amsterdam Vrije University, Amsterdam, The Netherlands.
Claus KieferSupport Center for Advanced Neuroimaging, Institute for Diagnostic and Interventional Neuroradiology, Inselspital, Bern University, Bern, Switzerland.
Roland WiestSupport Center for Advanced Neuroimaging, Institute for Diagnostic and Interventional Neuroradiology, Inselspital, Bern University, Bern, Switzerland.
Frank ScharnowskiDepartment of Basic Psychological Research and Research Methods, Vienna University, Vienna, Austria.
Ronald SladkyDepartment of Basic Psychological Research and Research Methods, Vienna University, Vienna, Austria.
Amelie HauggDepartment of Psychiatry, Psychotherapy, and Psychosomatics, Zurich University, Zurich, Switzerland.
Lydia HellrungDepartment of Economics, Zurich University, Zurich, Switzerland.
Jessica PeterUniversity Hospital of Old Age Psychiatry and Psychotherapy, Bern University, Bern, Switzerland. jessica.peter@upd.unibe.ch.ORCID 0000-0002-0817-8431
University Hospital of Bern · CHUniversity of Vienna · ATUniversity of Zurich · CHVrije Universiteit Amsterdam · NL

Funding

Velux Stiftung 17/1163
6 · The paper itself

Abstract

backgroundSeveral fMRI studies found hyperactivity in the hippocampus during pattern separation tasks in patients with Mild Cognitive Impairment (MCI; a prodromal stage of Alzheimer's disease). This was associated with memory deficits, subsequent cognitive decline, and faster clinical progression. A reduction of hippocampal hyperactivity with an antiepileptic drug improved memory performance. Pharmacological interventions, however, entail the risk of side effects. An alternative approach may be real-time fMRI neurofeedback, during which individuals learn to control region-specific brain activity. In the current project we aim to test the potential of neurofeedback to reduce hippocampal hyperactivity and thereby improve memory performance.

methodsIn a single-blind parallel-group study, we will randomize n = 84 individuals (n = 42 patients with MCI, n = 42 healthy elderly volunteers) to one of two groups receiving feedback from either the hippocampus or a functionally independent region. Percent signal change of the hemodynamic response within the respective target region will be displayed to the participant with a thermometer icon. We hypothesize that only feedback from the hippocampus will decrease hippocampal hyperactivity during pattern separation and thereby improve memory performance. DISCUSSION: Results of this study will reveal whether real-time fMRI neurofeedback is able to reduce hippocampal hyperactivity and thereby improve memory performance. In addition, the results of this study may identify predictors of successful neurofeedback as well as the most successful regulation strategies.

trial registrationThe study has been registered with clinicaltrials.gov on the 16th of July 2019 (trial identifier: NCT04020744 ).

Indexed as

Cognitive DysfunctionNeurofeedbackAgedHippocampusHumansMagnetic Resonance ImagingRandomized Controlled Trials as TopicSingle-Blind MethodEpisodic memoryHippocampal hyperactivityNeurofeedbackPattern separationReal-time fMRI

Identifiers

PMID33563242
PMCPMC7871643
OpenAlexW3127139774

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.