Effects of olfactory stimulation by α-pinene on autonomic nervous activity

Ikei, Harumi; Song, Chorong; Miyazaki, Y.

doi:10.1007/s10086-016-1576-1

Cited by 62 publications

(49 citation statements)

References 21 publications

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“…Several studies have reported the physiological effects of olfactory stimulation from hinoki, which are consistent with the findings of our research [8][9][10]33]. Olfactory stimulation with air-dried hinoki wood calmed prefrontal cortex activity compared with high-temperature-dried wood [8].…”

Section: Discussionsupporting

confidence: 90%

“…Olfactory stimulation with hinoki leaf oil calmed prefrontal cortex activity and increased parasympathetic nervous activity compared with the control condition (air), indicating that olfactory stimulation with hinoki leaf oil can induce physiological relaxation [33]. Inhalation of α-pinene [9] and d-limonene [10], which are major odorous components of coniferous trees such as hinoki, increased parasympathetic nervous activity and decreased heart rate compared with control condition (air), indicating physiological relaxation.…”

Section: Discussionmentioning

confidence: 99%

“…The oldest report, published in 1992, focused on the physiological effect of olfactory stimulation with Taiwan cypress oil [7], and several other reports have been published since. In recent years, the physiological relaxation effects of stimulation by olfactory stimuli such as air-dried hinoki cypress (hereinafter called "hinoki") (Chamaecyparis obtusa) wood chips [8], α-pinene [9], and D -limonene [10], which are components derived from wood, have been reported. Several studies on visual stimulation have also been conducted using rooms with different designs and proportions of wood [11][12][13] and large wall panels [14].…”

Section: Introductionmentioning

confidence: 99%

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Physiological effects of touching hinoki cypress (Chamaecyparis obtusa)

2018

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This study aimed to clarify the physiological effects of touching hinoki cypress (hereinafter called "hinoki") (Chamaecyparis obtusa) wood with the palm of the right hand on brain activity and autonomic nervous activity. Twenty-two female university students (mean age 21.1 ± 0.2 years) participated in the study. As an indicator of brain activity, oxyhemoglobin (oxy-Hb) concentrations were measured in the left/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 low-frequency (LF)/HF ratio, which reflected sympathetic nervous activity, were measured. Plate (300 × 300 mm) of uncoated hinoki was used as tactile stimulation. Marble was used as a control material. After sitting at rest with their eyes closed, the participants touched the materials for 90 s with their eyes still closed. The results showed that tactile stimulation with hinoki significantly decreased oxy-Hb concentration in the left prefrontal cortex and increased ln(HF) reflected parasympathetic nervous activity compared with marble. In conclusion, our study showed that touching hinoki wood with the palm calms prefrontal cortex activity and increases parasympathetic nervous activity, thereby inducing physiological relaxation.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Physiological effects of touching hinoki cypress (Chamaecyparis obtusa)

2018

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“…Single substance inhalation experiments using the main volatile components of wood such as a-pinene and limonene have also been conducted following the same experimental design as in the reports already described [38,45,46]. Tsunetsugu et al [38] investigated the effects of olfactory stimulation by a-pinene and limonene on blood pressure.…”

Section: Olfactory Stimulationmentioning

confidence: 99%

Physiological effects of wood on humans: a review

2016

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It is empirically known that wood can cause a comfort enhancement effect in humans. On the other hand, not enough scientific knowledge based on evidence-based research is available on this subject. However, data using physiological indices have increasingly accumulated in recent years. This review provides an overview of the current situation for peer-reviewed reports related to the physiological effects of wood. We reviewed reports that elucidated the effects of wood-derived stimulations on the olfactory, visual, auditory, and tactile sensations using physiological indices such as brain activity (e.g., near-infrared spectroscopy) and autonomic nervous activity (e.g., heart rate variability and blood pressure). It became clear that many studies were limited by (1) a small number of participants, mostly aged in their 20s; (2) use of only a single stimulus (e.g., only olfactory or only visual), or (3) an incomplete experimental design. In addition, this review examined the field of forest therapy, for which there is abundant research. Further study is needed to elucidate the physiological effects of wood on humans.

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“…Huang and Li (2015) reported the similarities and differentials of personal characteristics between expert and novice designers within four product design stages utilizing the SD method. Ikei et al (2016) evaluated the psychological effect of the smell using the modified SD method. Three pairs of adjectives were assessed on 13 scales as "comfortable-uncomfortable", "relaxed-awakening", and "natural-artificial".…”

Section: Introductionmentioning

confidence: 99%

A Study on the Visual Images of Lotus Ink-Painting

Xie

Yip²,

et al. 2017

EURASIA J MATH SCI T

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The purpose of this study is to explore the visual images of lotus ink-painting of visitors and to investigate the gender, age difference. The participant who attended 2016 Hsieh, Yi-E Lotus Ink-painting exhibition. The sample consisted 199 (male: 68, female: 131; age between 18~24 undergraduate student) valid questionnaires had been collected. Results indicate that: A Lotus Ink-painting of "Zen Sit "has the most Phlegmatic (t=-17.380, p=.000), Sorrowful (t=-9.999, p=.000) Meditation (t=-18.783, p=.000), Lonely (t=-10.803, p=.000) Plain (t=-18.747, p=.000) feeling. A Lotus Ink-painting of "Red Lotus" has the most Passionate (t=30.259, p=.000), Abundant (t=24.438, p=.000), Untrammeled (t=24.235, p=.000), Liberated (t=18.187, p=.000), Foison (t=21.306, p=.000) feeling. Gender and age difference do interaction significantly influence the visual images of lotus ink-painting. An artist can adopt the visual images of lotus ink-painting concluded form this study to understand the feelings of visitors on the lotus ink-painting.

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Effects of olfactory stimulation by α-pinene on autonomic nervous activity

Cited by 62 publications

References 21 publications

Physiological effects of touching hinoki cypress (Chamaecyparis obtusa)

Physiological effects of touching hinoki cypress (Chamaecyparis obtusa)

Physiological effects of wood on humans: a review

A Study on the Visual Images of Lotus Ink-Painting

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