Evidence map›Paper›PMID 26123450›Full record

ArticlePsychiatry research2015

Alterations in hippocampal connectivity across the psychosis dimension.

Niyatee Samudra, Elena I Ivleva, Nicholas A Hubbard, Bart Rypma, John A Sweeney, Brett A Clementz, Matcheri S Keshavan, Godfrey D Pearlson, Carol A Tamminga

Open access · greenAbstract read
In one paragraph

Article in Psychiatry research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

39 citing papers in PubMed, 90 citations in OpenAlex.

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  14. Hippocampal circuit dysfunction in psychosis.Translational psychiatry · 2022
    Review
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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

9 authors at 5 institutions in 1 country.

Niyatee SamudraDepartment of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, United States. Electronic address: niyatee.samudra@gmail.com.
Elena I IvlevaDepartment of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, United States.
Nicholas A HubbardCenter for Brain Health, UT Dallas, Dallas, TX, United States.
Bart RypmaDepartment of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, United States; Center for Brain Health, UT Dallas, Dallas, TX, United States.
John A SweeneyDepartment of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, United States.
Brett A ClementzDepartment of Psychology, University of Georgia, Athens, GA, United States.
Matcheri S KeshavanDepartment of Psychiatry, Beth Israel Deaconess Hospital, Harvard Medical School, Boston, MA, United States.
Godfrey D PearlsonDepartment of Psychiatry, Institute of Living/Hartford Hospital, Yale School of Medicine, New Haven, CT, United States.
Carol A TammingaDepartment of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, United States.
The University of Texas Southwestern Medical Center · USHartford Hospital · USHarvard University · USThe University of Texas at Dallas · USUniversity of Georgia · US

Funding

UT Southwestern Center for Translational Medicine (UL1/KL2/TL1)UL1TR001105 · NCATS · UT SOUTHWESTERN MEDICAL CENTER · PI TOTO, ROBERT DANIEL · 2013 to 2017
$24.5M
Bipolar & Schizophrenia Consortium for Parsing Intermediate PhenotypesR01MH077851 · NIMH · UT SOUTHWESTERN MEDICAL CENTER · PI TAMMINGA, CAROL A · 2007 to 2019
$7.8M
Bipolar & Schizophrenia Consortium for Parsing Intermediate PhenotypesR01MH077945 · NIMH · YALE UNIVERSITY · PI PEARLSON, GODFREY D · 2007 to 2019
$7.6M
Stability of Biotypes: a Longitudinal EvaluationR01MH078113 · NIMH · WAYNE STATE UNIVERSITY · PI KESHAVAN, MATCHERI S. · 2007 to 2019
$6.2M
Bipolar & Schizophrenia Consortium for Parsing Intermediate PhenotypesR01MH077852 · NIMH · UNIVERSITY OF MARYLAND BALTIMORE · PI THAKER, GUNVANT K · 2007 to 2010
$3.5M
Bipolar & Schizophrenia Consortium for Parsing Intermediate PhenotypesR01MH077862 · NIMH · UT SOUTHWESTERN MEDICAL CENTER · PI SWEENEY, JOHN A · 2007 to 2010
$3.1M
Psychosis and Affective Research Domains and Intermediate Phenotypes (PARDIP)R01MH096913 · NIMH · UT SOUTHWESTERN MEDICAL CENTER · PI TAMMINGA, CAROL A · 2013 to 2015
$950k
UT Southwestern Center for Translational Medicine (UL18Kl2/TL1)TL1TR001104 · NCATS · UT SOUTHWESTERN MEDICAL CENTER · PI TOTO, ROBERT DANIEL · 2013 to 2017
$418k
NCATS NIH HHS TL1 TR001104NCATS NIH HHS TL1TR001104NCATS NIH HHS UL1 TR001105NIMH NIH HHS MH077851NIMH NIH HHS MH077852NIMH NIH HHS MH077862NIMH NIH HHS MH077945NIMH NIH HHS MH078113NIMH NIH HHS R01 MH077851NIMH NIH HHS R01 MH077852NIMH NIH HHS R01 MH077862NIMH NIH HHS R01 MH077945NIMH NIH HHS R01 MH078113NIMH NIH HHS R01 MH096913
6 · The paper itself

Abstract

Recent evidence demonstrates that hippocampal hyperactivity helps mediate psychosis. Using resting state functional magnetic resonance imaging (rsfMRI), we examined hippocampal connectivity alterations in individuals with psychosis (PS) versus healthy controls (HC). Because of its putative greater involvement in psychiatric disorders, we hypothesized that the anterior hippocampus network would show greater dysconnectivity in psychosis. We tested rsfMRI connectivity in 88 PS (including 21 with schizophrenia; 40 with schizoaffective disorder; 27 with psychotic bipolar I disorder) and 65 HC. Seed-based voxel-wise connectivity analyses were carried out using whole, anterior, and posterior hippocampal seeds. No significant differences in functional hippocampal connectivity were found across the three conventional diagnoses. PS were then contrasted with HC, showing strong reductions in anterior hippocampal connectivity to anterior neocortical regions, including medial frontal and anterior cingulate cortices, as well as superior temporal gyrus, precuneus, thalamus and cerebellum. Posterior hippocampal seeds also demonstrated decreased connectivity in PS, with fewer dysconnected regions and a posterior/cerebellar distribution. Whole hippocampal outcomes were consistent with anterior/posterior hippocampal connectivity changes. Connectivity alterations did not correlate with cognition, clinical symptoms, or medication effect variables. Our results suggest a psychosis network of decreased hippocampal connectivity with limbic and frontal contributions, independent of diagnostic categories.

Indexed as

AdultBipolar DisorderBrainBrain MappingDiagnostic and Statistical Manual of Mental DisordersFemaleFrontal LobeHippocampusHumansLimbic SystemMagnetic Resonance ImagingMaleMiddle AgedNeural PathwaysPsychotic DisordersReference ValuesHippocampusPsychosisResting-state functional connectivity

Identifiers

PMID26123450
PMCPMC4784701
OpenAlexW1851634857

What OpenQuestion holds

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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.