Evidence map›Paper›PMID 37547747›Full record

ArticleFrontiers in aging neuroscience2023

Photobiomodulation may enhance cognitive efficiency in older adults: a functional near-infrared spectroscopy study.

Tsz-Lok Lee, Agnes S Chan

Registry-linked trialAbstract read
In one paragraph

Article in Frontiers in aging neuroscience, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07651787 (Neurovascular and Mitochondrial Mechanisms of Transcranial Photobiomodulation in Vascular Mild Cognitive Impairment), which is not on this map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing 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.

NCT07651787 narecruitingnot on this mapstarted 2025, after this paper: background citation

Neurovascular and Mitochondrial Mechanisms of Transcranial Photobiomodulation in Vascular Mild Cognitive Impairment

TypeinterventionalSponsorUniversity of OklahomaRan2025 to 2026Enrolled40ConditionsMild Cognitive Impairment (MCI), Amyloid PathologyArmsActive Vielight Neuro RX-Duo device -Active transcranial photobiomodulation, Sham Vielight Neuro RX-Duo device -Sham transcranial photobiomodulation
3 · Its place in the literature

Who cites it

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

  1. Pooled it
  2. Article
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  4. Article
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  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. fNIRS as a biomarker for individuals with subjective memory complaints and MCI.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Article
  12. 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

2 authors.

Tsz-Lok LeeNeuropsychology Laboratory, Department of Psychology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China.
Agnes S ChanNeuropsychology Laboratory, Department of Psychology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: The relative oxygenated hemoglobin (HbO) measured using functional near-infrared spectroscopy (fNIRS) has been considered as an index for cognitive loading, with the more difficult the task, the higher the level. A previous study reported that young adults who received transcranial photobiomodulation (tPBM) showed a reduced HbO of a difficult task, suggesting that tPBM may enhance cognitive efficiency. The present study further investigated the effect of tPBM on cognitive efficiency in older adults. Methods: Thirty participants received a single tPBM on the forehead for 350 s. Before and after tPBM, their HbO in the visual span task with various difficulties was measured with fNIRS. Results: After tPBM, participants exhibited significantly lower HbO in a harder (span 7) but not an easier level (span 2) of the task, but their behavioral performance remained unchanged. In addition, factors affecting the reduction of HbO were examined, and the results showed that individuals with better memory (as measured by a 30-min delayed recall test) showed more reduction of HbO. Discussion: The results suggest that tPBM may enhance cognitive efficiency, with individuals with better memory tend to benefit more.

Indexed as

brain stimulationcognitive efficiencymemorymental effortphotobiomodulation

Identifiers

PMID37547747
PMCPMC10397517

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Registered trials

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.