Evidence map›Paper›PMID 29373558›Full record

ArticleInternational journal of environmental research and public health2018

Physiological Effects of Visual Stimulation with Forest Imagery.

Chorong Song, Harumi Ikei, Yoshifumi Miyazaki

Open access · goldAbstract read
In one paragraph

Article in International journal of environmental research and public health, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 2 pooled it
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

42 citing papers in PubMed, 2 syntheses or guidelines pooled it, 113 citations in OpenAlex.

  1. Pooled it
  2. Physiological Benefits of Viewing Nature: A Systematic Review of Indoor Experiments.International journal of environmental research and public health · 2019
    Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. Trial
  7. The Mood-Improving Effect of Viewing Images of Nature and Its Neural Substrate.International journal of environmental research and public health · 2021
    Trial
  8. Trial
  9. Article
  10. Article
  11. Article
  12. Article
  13. Relationship Between Darkness and Healing of Night Sky in Planetarium.International journal of environmental research and public health · 2025
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Physiological and Psychological Responses of Viewing a Waterfall Image: A Crossover Study.International journal of environmental research and public health · 2022
    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

3 authors at 1 institution in 1 country.

Chorong SongCenter for Environment, Health and Field Sciences, Chiba University, 6-2-1 Kashiwa-no-ha, Kashiwa, Chiba 277-0882, Japan. crsong1028@chiba-u.jp.ORCID 0000-0002-1924-1053
Harumi IkeiCenter for Environment, Health and Field Sciences, Chiba University, 6-2-1 Kashiwa-no-ha, Kashiwa, Chiba 277-0882, Japan. ikei0224@ffpri.affrc.go.jp.ORCID 0000-0001-5126-9198
Yoshifumi MiyazakiCenter for Environment, Health and Field Sciences, Chiba University, 6-2-1 Kashiwa-no-ha, Kashiwa, Chiba 277-0882, Japan. ymiyazaki@faculty.chiba-u.jp.ORCID 0000-0002-3170-6810
Chiba University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study was aimed to clarify the physiological effects of visual stimulation using forest imagery on activity of the brain and autonomic nervous system. Seventeen female university students (mean age, 21.1 ± 1.0 years) participated in the study. As an indicator of brain activity, oxyhemoglobin (oxy-Hb) concentrations were measured in the left and right prefrontal cortex using near-infrared time-resolved spectroscopy. Heart rate variability (HRV) was used as an indicator of autonomic nervous activity. The high-frequency (HF) component of HRV, which reflected parasympathetic nervous activity, and the ratio of low-frequency (LF) and high-frequency components (LF/HF), which reflected sympathetic nervous activity, were measured. Forest and city (control) images were used as visual stimuli using a large plasma display window. After sitting at rest viewing a gray background for 60 s, participants viewed two images for 90 s. During rest and visual stimulation, HRV and oxy-Hb concentration in the prefrontal cortex were continuously measured. Immediately thereafter, subjective evaluation of feelings was performed using a modified semantic differential (SD) method. The results showed that visual stimulation with forest imagery induced (1) a significant decrease in oxy-Hb concentrations in the right prefrontal cortex and (2) a significant increase in perceptions of feeling "comfortable," "relaxed," and "natural."

Indexed as

ForestsAutonomic Nervous SystemBiomarkersEmotionsFemaleHeart RateHumansOxyhemoglobinsParasympathetic Nervous SystemPerceptionPhotic StimulationPrefrontal CortexRelaxationSpectroscopy, Near-InfraredSympathetic Nervous SystemYoung AdultBiomarkersOxyhemoglobinsautonomic nervous activityforest imageryforest therapyheart rate variabilitynear-infrared spectroscopyphysiological relaxationprefrontal cortex activitypreventive medical effectsemantic differential methodshinrin-yoku

Identifiers

PMID29373558
PMCPMC5858282
OpenAlexW2789974168

What OpenQuestion 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 OpenQuestion graph.