Bumblebees secrete a substance from their tarsi wherever they land, which can be detected by conspecifics. These secretions are referred to as scent-marks, which bumblebees are able to use as social cues. Although it has been found that bumblebees can detect and associate scent-marks with rewarding or unrewarding flowers, their ability at discriminating between scent-marks from bumblebees of di...

this study evaluated the effects of inhalation of lavender essential oil on the pain of open-heart surgery. the main complaint of patients after open-heart surgery is chest pain. due to the side effects of opioids, it is important to use a non-invasive way to effectively relieve pain including aromatherapy with analgesics. this study is a clinical single-blind trial. the study was conducted on ...

this study evaluated the effects of inhalation of lavender essential oil on vital signs in icu open-heart surgery. this study is a clinical single-blind trial. the study was conducted on 40 patients who had open-heart surgery in the cardiac icu of two hospitals of tehran university of medical sciences, 2012. criteria included: full consciousness, lack of hemorrhage, lack of heart rate reduction...

the overall goal of this review is to discuss the potential efficacy of herbal treatments. plants are considered among the main sources of biologically active chemicals. plant based drugs usage in our past decay became very renowned due to their fewer side effects and being less expensive than chemical ones. recently, more abrupt tendency in this field has been increased. furthermore, advances ...

Flower-visiting insects exhibit innate preferences for particular colours. A previous study demonstrated that naive Papilio xuthus females prefer yellow and red, whereas males are more attracted to blue. Here, we demonstrate that the innate colour preference can be modified by olfactory stimuli in a sexually dimorphic manner. Naive P. xuthus were presented with four coloured discs: blue, green,...

The present study analyzed 42 organic solvent extracts of scent mark pools from five dominant female common marmosets by gas chromatography (GC) and combined GC and mass spectrometry. We determined whether there were qualitative or quantitative differences between the chemical composition of scent marks from individual females. Gas chromatography and mass spectral analysis detected the same 162...

Can scents evoke nostalgia; what might be the psychological implications of such an evocation? Participants sampled 12 scents and rated the extent to which each scent was familiar, arousing and autobiographically relevant, as well as the extent to which each scent elicited nostalgia. Participants who were high (compared to low) in nostalgia proneness reported more scent-evoked nostalgia, and sc...

BACKGROUND Presently, using complementary therapy such as lavender oil has specific application in medicine. The purpose of this study was to investigate the effect of aromatherapy massage on the severity of primary dysmenorrhea in nursing and midwifery students of Islamic Azad University of Arsanjan, Iran. MATERIALS AND METHODS This study was performed using clinical trial method on 80 eligi...

OBJECTIVE Lavender is used in herbal medicine for different therapeutic purposes. Nonetheless, potential therapeutic effects of this plant in ischemic heart disease and its possible mechanisms remain to be investigated. MATERIALS AND METHODS In this experimental study, lavender oil at doses of 200, 400 or 800 mg/kg was administered through gastric gavage for 14 days before infarct-like myocar...

An important marker in neurodegenerative Alzheimer’s disease (AD) is abnormal production of amyloid beta (Aβ) peptide leading to formation of plaques in the brain. Through decreasing Aβ aggregates, anti-inflammatory agents, phagocytosis, and proteolytic enzymes are known to decline risk of Aβ plaque formation. In the previous study we showed that aqueous extract of Lavandula angustifolia (laven...