Evidence map›Paper›PMID 30232252›Full record

ArticleNeurology2018

Changes in subjective experience elicited by direct stimulation of the human orbitofrontal cortex.

Kieran C R Fox, Jennifer Yih, Omri Raccah, Shrita L Pendekanti, Lauren E Limbach, Daniella D Maydan, Josef Parvizi

Abstract read
In one paragraph

Article in Neurology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
–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

20 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  16. Differential functional connectivity underlying asymmetric reward-related activity in human and nonhuman primates.Proceedings of the National Academy of Sciences of the United States of America · 2020
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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

7 authors.

Kieran C R FoxFrom the Department of Neurology and Neurological Sciences, Stanford University, CA.
Jennifer YihFrom the Department of Neurology and Neurological Sciences, Stanford University, CA.
Omri RaccahFrom the Department of Neurology and Neurological Sciences, Stanford University, CA.
Shrita L PendekantiFrom the Department of Neurology and Neurological Sciences, Stanford University, CA.
Lauren E LimbachFrom the Department of Neurology and Neurological Sciences, Stanford University, CA.
Daniella D MaydanFrom the Department of Neurology and Neurological Sciences, Stanford University, CA.
Josef ParviziFrom the Department of Neurology and Neurological Sciences, Stanford University, CA. parvizi@stanford.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveWe applied direct cortical stimulation (DCS) to the orbitofrontal cortex (OFC) in neurosurgical patients implanted with intracranial electrodes to probe, with high anatomic precision, the causal link between the OFC and human subjective experience.

methodsWe administered 272 instances of DCS at 172 OFC sites in 22 patients with intractable focal epilepsy (from 2011 to 2017), none of whom had seizures originating from the OFC.

resultsOur observations revealed a rich variety of affective, olfactory, gustatory, and somatosensory changes in the subjective domain. Elicited experiences were largely neutral or negatively valenced (e.g., aversive smells and tastes, sadness, and anger). Evidence was found for preferential left lateralization of negatively valenced experiences and strong right lateralization of neutral effects. Moreover, most of the elicited effects were observed after stimulation of OFC tissue around the transverse orbital sulcus, and none were seen in the most anterior aspects of the OFC.

conclusionsOur study yielded 3 central findings: first, a dissociation between the "silent" anterior and nonsilent middle/posterior OFC where stimulation clearly elicits changes in subjective experience; second, evidence that the OFC might play a causal role in integrating affect and multimodal sensory experiences; and third, clear evidence for left lateralization of negatively valenced effects. Our findings provide important information for clinicians treating OFC injury or planning OFC resection and scientists seeking to understand the brain basis for the integration of sensation, cognition, and affect.

Indexed as

Electric StimulationAdultAffectAgedDrug Resistant EpilepsyElectrodes, ImplantedElectroencephalographyFemaleFunctional LateralityHumansMagnetic Resonance ImagingMaleMiddle AgedNeurosurgical ProceduresPrefrontal CortexSensation

Identifiers

PMID30232252
PMCPMC6202946

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.