Evidence map›Paper›PMID 34099103›Full record

ArticleeLife2021

Stimulus-induced gamma rhythms are weaker in human elderly with mild cognitive impairment and Alzheimer's disease.

Dinavahi Vps Murty, Keerthana Manikandan, Wupadrasta Santosh Kumar, Ranjini Garani Ramesh, Simran Purokayastha, Bhargavi Nagendra, Abhishek Ml, Aditi Balakrishnan, Mahendra Javali, Naren Prahalada Rao and 1 more

Open access · goldAbstract read
In one paragraph

Article in eLife, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
6.0field-weighted citation impact, top 3% 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

38 citing papers in PubMed, 70 citations in OpenAlex.

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  10. Enhancing working memory in MCI: Modulating alpha-gamma coupling and gamma oscillations via rTMS.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
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  13. Delayed Accumulation of Inhibitory Input Explains Gamma Frequency Variation with Changing Contrast in an Inhibition Stabilized Network.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
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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

11 authors at 3 institutions in 1 country.

Dinavahi Vps MurtyCentre for Neuroscience, Indian Institute of Science, Bengaluru, India.ORCID 0000-0003-1726-5171
Keerthana ManikandanCentre for Neuroscience, Indian Institute of Science, Bengaluru, India.ORCID 0000-0002-6461-1930
Wupadrasta Santosh KumarCentre for Neuroscience, Indian Institute of Science, Bengaluru, India.ORCID 0000-0001-7097-0414
Ranjini Garani RameshCentre for Neuroscience, Indian Institute of Science, Bengaluru, India.
Simran PurokayasthaCentre for Neuroscience, Indian Institute of Science, Bengaluru, India.ORCID 0000-0001-6096-1477
Bhargavi NagendraCentre for Neuroscience, Indian Institute of Science, Bengaluru, India.
Abhishek MlCentre for Neuroscience, Indian Institute of Science, Bengaluru, India.
Aditi BalakrishnanCentre for Neuroscience, Indian Institute of Science, Bengaluru, India.
Mahendra JavaliMS Ramaiah Medical College & Memorial Hospital, Bengaluru, India.
Naren Prahalada RaoNational Institute of Mental Health and Neurosciences, Bengaluru, India.
Supratim RayCentre for Neuroscience, Indian Institute of Science, Bengaluru, India.ORCID 0000-0002-1968-1382
Indian Institute of Science Bangalore · INM.S. Ramaiah Medical College · INNational Institute of Mental Health and Neurosciences · IN

Funding

Wellcome Trust
6 · The paper itself

Abstract

Alzheimer's disease (AD) in elderly adds substantially to socioeconomic burden necessitating early diagnosis. While recent studies in rodent models of AD have suggested diagnostic and therapeutic value for gamma rhythms in brain, the same has not been rigorously tested in humans. In this case-control study, we recruited a large population (N = 244; 106 females) of elderly (>49 years) subjects from the community, who viewed large gratings that induced strong gamma oscillations in their electroencephalogram (EEG). These subjects were classified as healthy (N = 227), mild cognitively impaired (MCI; N = 12), or AD (N = 5) based on clinical history and Clinical Dementia Rating scores. Surprisingly, stimulus-induced gamma rhythms, but not alpha or steady-state visually evoked responses, were significantly lower in MCI/AD subjects compared to their age- and gender-matched controls. This reduction was not due to differences in eye movements or baseline power. Our results suggest that gamma could be used as a potential screening tool for MCI/AD in humans.

Indexed as

AgedAged, 80 and overAlzheimer DiseaseCase-Control StudiesCognitive DysfunctionEvoked Potentials, VisualFemaleGamma RhythmHumansMaleMiddle AgedAlzheimer's diseasedementiaEEGgammahumanmedicinemild cognitive impairmentneuroscienceSSVEP

Identifiers

PMID34099103
PMCPMC8238507
OpenAlexW3168955156

What Socratic holds

Textmetadata
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 Socratic graph.