Aroma helps to preserve information processing resources of the brain in healthy subjects but not in temporal lobe epilepsy

Watanabe, Satsuki; Hara, Keiko; Ohta, Katsuya; Iino, Hiroko; Miyajima, Miho; Matsuda, Ayasa; Hara, Minoru; Maehara, Taketoshi; Matsushima, Eisuke

doi:10.1016/j.seizure.2012.10.008

Cited by 17 publications

(11 citation statements)

References 35 publications

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“…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. Watanabe and colleagues [ 100 ] elucidated the effect of ylang-ylang aroma on the auditory P300 of healthy individual and patient with temporal lobe epilepsy (TLE) who have impaired odor identification. The study demonstrated exposure to ylang-ylang aroma prolonged latencies of P300 in both control and TLE groups while only significant reduction of P300 amplitudes in healthy volunteers was observed.…”

Section: Effects On Mood and Cognitive Performancementioning

confidence: 99%

“…The study demonstrated exposure to ylang-ylang aroma prolonged latencies of P300 in both control and TLE groups while only significant reduction of P300 amplitudes in healthy volunteers was observed. The absence of P300 amplitudes reduction in TLE patients suggested that their information processing was not altered during the exposure to ylang-ylang aroma or the fact that TLE patients had lower P300 amplitudes under odourless condition as compared to the controls [ 100 ].…”

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

145

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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Section: Effects On Mood and Cognitive Performancementioning

confidence: 99%

Section: Effects On Mood and Cognitive Performancementioning

confidence: 99%

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

Tan

Lee

Yin

et al. 2015

Evidence-Based Complementary and Alternative Medicine

145

106

View full text Add to dashboard Cite

show abstract

“…A particular amount of fragrance oil was administered using an oxygen pump system through a plastic tube via respiratory masks (flow rate at 2 L/min) [12]. In another report, a known volume of diluted fragrance oil was added in a plastic bag and administered through a mask [63]. In a recent study, a nebulizer was used for the administration of fragrance oil.…”

Section: Electroencephalography (Eeg)mentioning

confidence: 99%

“…These changes were associated with the increase of positive emotions such as the feeling of well-being, or feeling active, fresh and romantic. Watanabe et al [63] found that impaired higher-order olfactory processing in temporal lobe epilepsy patients may inhibit the effects of the ylang-ylang aroma on the P300. Yoto et al [103] investigated the memory task performance and the central nervous activity after smelling two kinds (Koushun and Kouju) of pan-fired Japanese green tea to examine their physical and psychological effects.…”

Section: Effect Of Inhalation Of Fragrance On Eeg Activitymentioning

confidence: 99%

Influence of Fragrances on Human Psychophysiological Activity: With Special Reference to Human Electroencephalographic Response

2016

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The influence of fragrances such as perfumes and room fresheners on the psychophysiological activities of humans has been known for a long time, and its significance is gradually increasing in the medicinal and cosmetic industries. A fragrance consists of volatile chemicals with a molecular weight of less than 300 Da that humans perceive through the olfactory system. In humans, about 300 active olfactory receptor genes are devoted to detecting thousands of different fragrance molecules through a large family of olfactory receptors of a diverse protein sequence. The sense of smell plays an important role in the physiological effects of mood, stress, and working capacity. Electrophysiological studies have revealed that various fragrances affected spontaneous brain activities and cognitive functions, which are measured by an electroencephalograph (EEG). The EEG is a good temporal measure of responses in the central nervous system and it provides information about the physiological state of the brain both in health and disease. The EEG power spectrum is classified into different frequency bands such as delta (0.5–4 Hz), theta (4–8 Hz), alpha (8–13 Hz), beta (13–30 Hz) and gamma (30–50 Hz), and each band is correlated with different features of brain states. A quantitative EEG uses computer software to provide the topographic mapping of the brain activity in frontal, temporal, parietal and occipital brain regions. It is well known that decreases of alpha and beta activities and increases of delta and theta activities are associated with brain pathology and general cognitive decline. In the last few decades, many scientific studies were conducted to investigate the effect of inhalation of aroma on human brain functions. The studies have suggested a significant role for olfactory stimulation in the alteration of cognition, mood, and social behavior. This review aims to evaluate the available literature regarding the influence of fragrances on the psychophysiological activities of humans with special reference to EEG changes.

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“…When compared with the control group, a decrease of P300 amplitude and an increase of P300 latency were observed in patients with MTS. Watanabe et al [ 60 ] found that P300 latencies were prolonged by the ylang-ylang fragrance in both patients with TLE and healthy subjects. The P300 amplitude was significantly reduced by the ylang-ylang fragrance in healthy subjects.…”

Section: P300 and Epilepsymentioning

confidence: 99%

Application of the P300 Event-Related Potential in the Diagnosis of Epilepsy Disorder: A Review

et al. 2018

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Epilepsy is one of the most serious chronical neurological disorders, affecting more than 50 million people worldwide. It can be defined as a spectrum disorder, and patients with epilepsy possess abnormalities in cognitive functions. A number of factors can cause cognitive dysfunctions in epileptic syndromes, including etiology, the age of onset, type of seizure and severity, duration, and antiepileptic drugs. Event-related potentials (ERPs) are very useful clinical and research instruments to evaluate cognitive function in patients with neuropsychiatry disorders. Event-related potentials directly reflect cortical neuronal activity and provide a particular level of temporal resolution. Among various ERP components, the P300 is the most important component for assessing cognitive processes such as attention, working memory, and concentration. Numerous studies have reported the abnormalities in amplitude or latency of P300 component of ERP in epileptic patients, and these abnormalities are indicative of cognitive dysfunction. Therefore, the purpose of this review is to consolidate the existing literature in connection with the use of P300 in epileptic patients.

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Aroma helps to preserve information processing resources of the brain in healthy subjects but not in temporal lobe epilepsy

Cited by 17 publications

References 35 publications

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

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

Influence of Fragrances on Human Psychophysiological Activity: With Special Reference to Human Electroencephalographic Response

Application of the P300 Event-Related Potential in the Diagnosis of Epilepsy Disorder: A Review

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