Evidence map›Paper›PMID 40586219›Full record

ArticleHuman brain mapping2025

Individualized Functional and Structural Language Lateralities in Temporal Lobe Epilepsy and Their Impact on Memory.

Ankeeta Ankeeta, Qirui Zhang, Sam Sharifzadeh Javidi, Shilpi Modi, Michael R Sperling, Joseph I Tracy

Abstract read
In one paragraph

Article in Human brain mapping, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Article
  2. Article
  3. 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

6 authors.

Ankeeta AnkeetaDepartment of Neurology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Qirui ZhangDepartment of Neurology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Sam Sharifzadeh JavidiDepartment of Neurology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Shilpi ModiDepartment of Neurology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Michael R SperlingDepartment of Neurology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Joseph I TracyDepartment of Neurology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.ORCID 0000-0001-5260-3290

Funding

Using Direct Brain Stimulation to Study Cognitive ElectrophysiologyU01NS113198 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI KAHANA, MICHAEL JACOB · 2019 to 2023
$6.9M
Targeted closed-loop intracranial brain-stimulation to improve episodic memoryR01NS106611 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI KAHANA, MICHAEL JACOB · 2019 to 2023
$3.1M
Model Development for Prediction of Surgical Outcome in Temporal Lobe Epilepsy Patients: Incorporation of the Correlation between Post-Surgical Reorganization Phenotypes and Pre-Surgical DataR01NS112816 · NINDS · THOMAS JEFFERSON UNIVERSITY · PI TRACY, JOSEPH I. · 2019 to 2023
$2.3M
NIH HHS R01 NS106611NIH HHS R01 NS112816-01NIH HHS U01 NS113198NINDS NIH HHS R01 NS106611NINDS NIH HHS R01 NS112816NINDS NIH HHS U01 NS113198
6 · The paper itself

Abstract

The basis and impact of functional asymmetries in the brain, particularly language lateralization, are not fully understood, and the relationship between functional and structural asymmetries remains largely untested. This study investigated the degree to which asymmetries in hemispheric language laterality are concordant with asymmetries in gray matter (GM) structure and whether the hemispheric organization of memory is influenced by functional language asymmetries. Structural and functional MR data was acquired from 261 individuals, including those with unilateral temporal lobe epilepsy (LTLE = 96, RTLE = 69) and matched with healthy participants (HPs = 96). Functional language laterality indices (LIs) were calculated using two methods: (1) standard LIs from the frontal, temporal, and parietal lobes and (2) targeted LIs (T-LIs) from individually defined activation peaks. Structural LIs (ST-LIs) were derived from the GM volumes underlying these functional LIs. We observed significant shifts in language laterality in LTLE compared to HPs in 8 out of 12 brain regions. Strong correlations were observed between functional LIs and their structural counterparts. Discriminant analyses demonstrated that targeted LIs and ST-LIs more effectively distinguished TLE patients from HPs, with ST-LIs being the most powerful discriminator. Partial least squares analyses showed verbal and visual memory have a direct dependence on targeted LIs in HPs and LTLE, with this effect more pronounced in HPs. In RTLE, verbal memory showed a similar dependency. These findings underscored the importance of individualized, region-specific measures for understanding language laterality, its relation to structural underpinnings, and its impact on the organization of other cognitive functions such as memory.

Indexed as

Epilepsy, Temporal LobeFunctional LateralityLanguageMemoryAdolescentAdultBrain MappingFemaleGray MatterHumansMagnetic Resonance ImagingMaleMiddle AgedYoung Adultlanguage lateralizationlanguage reorganizationmemory lateralizationstructural asymmetrytemporal lobe epilepsyverbal memoryvisual memory

Identifiers

PMID40586219
PMCPMC12207326

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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.