Evidence map›Paper›PMID 33026425›Full record

ArticleCerebral cortex (New York, N.Y. : 1991)2021

Waves of Change: Brain Sensitivity to Differential, not Absolute, Stimulus Intensity is Conserved Across Humans and Rats.

R Somervail, F Zhang, G Novembre, R J Bufacchi, Y Guo, M Crepaldi, L Hu, G D Iannetti

Open access · hybridAbstract read
In one paragraph

Article in Cerebral cortex (New York, N.Y. : 1991), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

17 citing papers in PubMed, 34 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. A two-system theory of sensory-evoked brain responses.Brain : a journal of neurology · 2026
    Review
  5. Article
  6. The Extralemniscal System Modulates Early Somatosensory Cortical Processing.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  7. Article
  8. Hyper-extralemniscal model of Fragile X syndrome.Cerebral cortex (New York, N.Y. : 1991) · 2025
    Article
  9. EEG of the Dancing Brain: Decoding Sensory, Motor, and Social Processes during Dyadic Dance.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. Confidence of probabilistic predictions modulates the cortical response to pain.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  14. Article
  15. Article
  16. Article
  17. 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

8 authors at 3 institutions in 3 countries.

R SomervailDepartment of Neuroscience, Physiology and Pharmacology, University College London, London, WC1E 6BT, UK.
F ZhangCAS Key Laboratory of Mental Health, Institute of Psychology, 100101 Beijing, China.
G NovembreNeuroscience and Behaviour Laboratory, Istituto Italiano di Tecnologia, 00161 Rome, Italy.
R J BufacchiNeuroscience and Behaviour Laboratory, Istituto Italiano di Tecnologia, 00161 Rome, Italy.
Y GuoNeuroscience and Behaviour Laboratory, Istituto Italiano di Tecnologia, 00161 Rome, Italy.
M CrepaldiElectronic Design Laboratory, Istituto Italiano di Tecnologia, 16152 Genova, Italy.
L HuCAS Key Laboratory of Mental Health, Institute of Psychology, 100101 Beijing, China.
G D IannettiDepartment of Neuroscience, Physiology and Pharmacology, University College London, London, WC1E 6BT, UK.
Italian Institute of Technology · ITUniversity College London · GBUniversity of Chinese Academy of Sciences · CN

Funding

Wellcome Trust
6 · The paper itself

Abstract

Living in rapidly changing environments has shaped the mammalian brain toward high sensitivity to abrupt and intense sensory events-often signaling threats or affordances requiring swift reactions. Unsurprisingly, such events elicit a widespread electrocortical response (the vertex potential, VP), likely related to the preparation of appropriate behavioral reactions. Although the VP magnitude is largely determined by stimulus intensity, the relative contribution of the differential and absolute components of intensity remains unknown. Here, we dissociated the effects of these two components. We systematically varied the size of abrupt intensity increases embedded within continuous stimulation at different absolute intensities, while recording brain activity in humans (with scalp electroencephalography) and rats (with epidural electrocorticography). We obtained three main results. 1) VP magnitude largely depends on differential, and not absolute, stimulus intensity. This result held true, 2) for both auditory and somatosensory stimuli, indicating that sensitivity to differential intensity is supramodal, and 3) in both humans and rats, suggesting that sensitivity to abrupt intensity differentials is phylogenetically well-conserved. Altogether, the current results show that these large electrocortical responses are most sensitive to the detection of sensory changes that more likely signal the sudden appearance of novel objects or events in the environment.

Indexed as

Acoustic StimulationAdultAgedAnimalsBehaviorBehavior, AnimalBrainElectrocorticographyElectroencephalographyEvoked PotentialsEvoked Potentials, AuditoryEvoked Potentials, SomatosensoryFemaleHumansMaleMiddle Agedbehavioral relevanceelectrocorticography (ECoG)electroencephalography (EEG)multispecies investigationsaliency-detection

Identifiers

PMID33026425
PMCPMC7786352
OpenAlexW3091869813

What OpenQuestion holds

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LicenceCC BY
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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.