Evidence map›Paper›PMID 32232373›Full record

ArticleCerebral cortex (New York, N.Y. : 1991)2020

Connectivity Gradient in the Human Left Inferior Frontal Gyrus: Intraoperative Cortico-Cortical Evoked Potential Study.

Takuro Nakae, Riki Matsumoto, Takeharu Kunieda, Yoshiki Arakawa, Katsuya Kobayashi, Akihiro Shimotake, Yukihiro Yamao, Takayuki Kikuchi, Toshihiko Aso, Masao Matsuhashi and 5 more

Open access · hybridAbstract read
In one paragraph

Article in Cerebral cortex (New York, N.Y. : 1991), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 7% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 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

15 authors at 4 institutions in 3 countries.

Takuro NakaeDepartment of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
Riki MatsumotoDepartment of Neurology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
Takeharu KuniedaDepartment of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
Yoshiki ArakawaDepartment of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
Katsuya KobayashiDepartment of Neurology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
Akihiro ShimotakeDepartment of Neurology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
Yukihiro YamaoDepartment of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
Takayuki KikuchiDepartment of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
Toshihiko AsoLaboratory for Brain Connectomics Imaging, RIKEN Center for Biosystems Dynamics Research, Hyogo 650-0047, Japan.
Masao MatsuhashiDepartment of Epilepsy, Movement Disorders and Physiology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
Kazumichi YoshidaDepartment of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
Akio IkedaDepartment of Epilepsy, Movement Disorders and Physiology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
Ryosuke TakahashiDepartment of Neurology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
Matthew A Lambon RalphMRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge CB2 7EF, UK.
Susumu MiyamotoDepartment of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
Kyoto University · JPEhime University · JPRIKEN Center for Biosystems Dynamics Research · JPUniversity of Cambridge · GB

Funding

Medical Research Council MC_UU_00005/18Medical Research Council MR/R023883/1
6 · The paper itself

Abstract

In the dual-stream model of language processing, the exact connectivity of the ventral stream to the anterior temporal lobe remains elusive. To investigate the connectivity between the inferior frontal gyrus (IFG) and the lateral part of the temporal and parietal lobes, we integrated spatiotemporal profiles of cortico-cortical evoked potentials (CCEPs) recorded intraoperatively in 14 patients who had undergone surgical resection for a brain tumor or epileptic focus. Four-dimensional visualization of the combined CCEP data showed that the pars opercularis (Broca's area) is connected to the posterior temporal cortices and the supramarginal gyrus, whereas the pars orbitalis is connected to the anterior lateral temporal cortices and angular gyrus. Quantitative topographical analysis of CCEP connectivity confirmed an anterior-posterior gradient of connectivity from IFG stimulus sites to the temporal response sites. Reciprocality analysis indicated that the anterior part of the IFG is bidirectionally connected to the temporal or parietal area. This study shows that each IFG subdivision has different connectivity to the temporal lobe with an anterior-posterior gradient and supports the classical connectivity concept of Dejerine; that is, the frontal lobe is connected to the temporal lobe through the arcuate fasciculus and also a double fan-shaped structure anchored at the limen insulae.

Indexed as

AdultAgedBrain MappingCerebral CortexComprehensionElectrocorticographyEvoked PotentialsFemaleHumansLanguageMaleMiddle AgedNeural PathwaysPrefrontal CortexSemanticsSpeech Perception4D visualizationcortico-cortical evoked potentialdual-stream language modelfronto-temporal radiation

Identifiers

PMID32232373
PMCPMC7325718
OpenAlexW3014038732

What OpenQuestion holds

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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.