14. Effects of odors on electroencephalogram and subjective alterations

Ishiguchi, Aki; Saitou, Aya; Suenaga, Kazue; Ohta, Katsuya

doi:10.1016/j.clinph.2008.01.039

Cited by 6 publications

(5 citation statements)

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“…This result was supported further with a decrease in stress index values from high to medium levels, which was determined by measuring variations in salivary alpha‐amylase (Pujiarti et al, 2012). Moreover, Ishiguchi, Saitou, Suenaga, Ohta, and Matsuura (2008) also reported that ylang ylang EO inhalation significantly increased alpha brain waves in a study consisting of 20 healthy volunteers. This effect was concomitant with a reduced amplitude of auditory P300, which is associated with higher cognitive processing (Table 2).…”

Section: Actions Of Eos On the Central Nervous Systemmentioning

confidence: 91%

Effects of essential oils on central nervous system: Focus on mental health

Lizarraga-Valderrama

2020

Phytotherapy Research

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Essential oils have been used as remedies since ancient times for the treatment of numerous illnesses on account of their wide range of biological activities. Recent preclinical and clinical studies have shown varying pharmacological responses in the nervous system leading to anxiolytic, antidepressant, sedative, and anticonvulsant effects. Experimentation in animal models has evidenced the involvement of multiple neurotransmitter systems in the mode of action of essential oils, resulting in measurable physiological effects in the brain. Additionally, clinical trials have demonstrated the influence of essential oils in physiological parameters such as blood pressure, heart rate, respiratory rate, brain waves composition, and cortisol serum levels with concomitant psychological effects. Although there is growing evidence of measurable effects of essential oils in animal brains, more clinical research is required to validate their influence in the human central nervous system. This will enable the development of essential oil‐based drugs for the treatment of mental illnesses such as depression, anxiety and dementia.

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Section: Actions Of Eos On the Central Nervous Systemmentioning

confidence: 91%

Effects of essential oils on central nervous system: Focus on mental health

Lizarraga-Valderrama

2020

Phytotherapy Research

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“…Ylang-ylang aroma produced a reduced alertness mood and increased calmness of the healthy volunteers but absence in the enhancement of cognitive performance and also lengthened processing speed [ 47 ]. Ishiguchi and colleagues evaluated the effect of inhalation of ylang-ylang essential oil by detecting the electroencephalography background activity of the volunteers [ 99 ]. They revealed that alpha 1 (8–9.9 Hz) brain waves which present in deep relaxation was increased significantly during inhalation of ylang-ylang essential oil and also reduced alertness mood of the volunteers [ 99 ].…”

Section: Effects On Mood and Cognitive Performancementioning

confidence: 99%

“…Ishiguchi and colleagues evaluated the effect of inhalation of ylang-ylang essential oil by detecting the electroencephalography background activity of the volunteers [ 99 ]. They revealed that alpha 1 (8–9.9 Hz) brain waves which present in deep relaxation was increased significantly during inhalation of ylang-ylang essential oil and also reduced alertness mood of the volunteers [ 99 ]. Thus, Ishiguchi and colleagues suggested that the lowering effect of alertness and increased alpha 1 brain waves may be the physiological basis for relaxation effect of aromatherapy with ylang-ylang [ 99 ].…”

Section: Effects On Mood and Cognitive Performancementioning

confidence: 99%

“…They revealed that alpha 1 (8–9.9 Hz) brain waves which present in deep relaxation was increased significantly during inhalation of ylang-ylang essential oil and also reduced alertness mood of the volunteers [ 99 ]. Thus, Ishiguchi and colleagues suggested that the lowering effect of alertness and increased alpha 1 brain waves may be the physiological basis for relaxation effect of aromatherapy with ylang-ylang [ 99 ]. Furthermore, reduction of the amplitude of auditory P300 which is associated with the higher cognitive processing was observed in healthy volunteers during inhalation of ylang-ylang aroma, suggesting a relaxing effect of aroma on cognitive function.…”

Section: Effects On Mood and Cognitive Performancementioning

confidence: 99%

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Traditional Uses, Phytochemistry, and Bioactivities ofCananga odorata(Ylang-Ylang)

Tan

Lee

Yin

et al. 2015

Evidence-Based Complementary and Alternative Medicine

141

106

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Ylang-ylang (Cananga odorata Hook. F. & Thomson) is one of the plants that are exploited at a large scale for its essential oil which is an important raw material for the fragrance industry. The essential oils extracted via steam distillation from the plant have been used mainly in cosmetic industry but also in food industry. Traditionally, C. odorata is used to treat malaria, stomach ailments, asthma, gout, and rheumatism. The essential oils or ylang-ylang oil is used in aromatherapy and is believed to be effective in treating depression, high blood pressure, and anxiety. Many phytochemical studies have identified the constituents present in the essential oils of C. odorata. A wide range of chemical compounds including monoterpene, sesquiterpenes, and phenylpropanoids have been isolated from this plant. Recent studies have shown a wide variety of bioactivities exhibited by the essential oils and the extracts of C. odorata including antimicrobial, antibiofilm, anti-inflammatory, antivector, insect-repellent, antidiabetic, antifertility and antimelanogenesis activities. Thus, the present review summarizes the information concerning the traditional uses, phytochemistry, and biological activities of C. odorata. This review is aimed at demonstrating that C. odorata not only is an important raw material for perfume industry but also considered as a prospective useful plant to agriculture and medicine.

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“…They concluded that the hiba odor generates a high level of arousal within the nervous system but does not have a significant effect on automatic information processing. Ishigjchi et al 5 investigated the influence of inhaling aromas on background electroencephalogram (EEG) using lavender, peppermint, grapefruit, juniper, and ylang-ylang essential oils. They reported that these aromas increased alpha powers and lowered subjective alertness.…”

Section: Introductionmentioning

confidence: 99%