Evidence map›Paper›PMID 35365504›Full record

ArticleeNeuro

Alpha EEG Activity and Pupil Diameter Coupling during Inactive Wakefulness in Humans.

Rodrigo Montefusco-Siegmund, Miriam Schwalm, Eduardo Rosales Jubal, Christ Devia, José I Egaña, Pedro E Maldonado

Open access · goldAbstract read
In one paragraph

Article in eNeuro. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
4.6field-weighted citation impact, top 4% 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

22 citing papers in PubMed, 40 citations in OpenAlex.

  1. Review
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  10. Frontotemporal network contribution to occluded face processing.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  11. Experience Dependence of Alpha Rhythms and Neural Dynamics in the Mouse Visual Cortex.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  12. Cross-species real time detection of trends in pupil size fluctuation.bioRxiv : the preprint server for biology · 2024
    Article
  13. Article
  14. Double Dissociation of Spontaneous Alpha-Band Activity and Pupil-Linked Arousal on Additive and Multiplicative Perceptual Gain.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  15. A disinhibitory circuit mechanism explains a general principle of peak performance during mid-level arousal.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  16. Article
  17. Neural α Oscillations and Pupil Size Differentially Index Cognitive Demand under Competing Audiovisual Task Conditions.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
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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

6 authors at 4 institutions in 3 countries.

Rodrigo Montefusco-SiegmundInstituto de Aparato Locomotor y Rehabilitación, Human Cognitive Neurophysiology and Behaviour Laboratory, Facultad de Medicina, Universidad Austral de Chile, Valdivia, 5111815, Chile rodrigo.montefusco@uach.cl.ORCID 0000-0001-8296-1195
Miriam SchwalmDepartment of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139.
Eduardo Rosales JubalCompetence Center for Methodology and Statistics, Luxembourg Institute of Health, Strassen 1445, Luxembourg.ORCID 0000-0001-5002-3823
Christ DeviaBiomedical Neuroscience Institute, Facultad de Medicina, Universidad de Chile, Santiago, 8380000, Chile.ORCID 0000-0002-2416-0864
José I EgañaDepartamento de Anestesiología y Medicina Perioperatoria, Facultad de Medicina, Universidad de Chile, Santiago, 8380456, Chile.
Pedro E MaldonadoBiomedical Neuroscience Institute, Facultad de Medicina, Universidad de Chile, Santiago, 8380000, Chile.ORCID 0000-0001-9895-7684
Universidad de Santiago de Chile · CLAustral University of Chile · CLLuxembourg Institute of Health · LUMassachusetts Institute of Technology · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Variations in human behavior correspond to the adaptation of the nervous system to different internal and environmental demands. Attention, a cognitive process for weighing environmental demands, changes over time. Pupillary activity, which is affected by fluctuating levels of cognitive processing, appears to identify neural dynamics that relate to different states of attention. In mice, for example, pupil dynamics directly correlate with brain state fluctuations. Although, in humans, alpha-band activity is associated with inhibitory processes in cortical networks during visual processing, and its amplitude is modulated by attention, conclusive evidence linking this narrowband activity to pupil changes in time remains sparse. We hypothesize that, as alpha activity and pupil diameter indicate attentional variations over time, these two measures should be comodulated. In this work, we recorded the electroencephalographic (EEG) and pupillary activity of 16 human subjects who had their eyes fixed on a gray screen for 1 min. Our study revealed that the alpha-band amplitude and the high-frequency component of the pupil diameter covariate spontaneously. Specifically, the maximum alpha-band amplitude was observed to occur ∼300 ms before the peak of the pupil diameter. In contrast, the minimum alpha-band amplitude was noted to occur ∼350 ms before the trough of the pupil diameter. The consistent temporal coincidence of these two measurements strongly suggests that the subject's state of attention, as indicated by the EEG alpha amplitude, is changing moment to moment and can be monitored by measuring EEG together with the diameter pupil.

Indexed as

PupilWakefulnessAnimalsAttentionElectroencephalographyHumansMiceVisual Perceptionarousalcortical statesneural oscillationsresting state

Identifiers

PMID35365504
PMCPMC9014982
OpenAlexW4220761374

What OpenQuestion holds

Textmetadata
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.