AI Article Synopsis
- The study investigates the effects of inhaling lemon, sandalwood, and kusunoki essential oils on cognitive function and brain activity using EEG measurements during a memory task.
- The results show that lemon essential oil significantly improved task performance and activated specific brain regions associated with memory and concentration.
- Sandalwood oil also activated brain areas but in a different frequency range, indicating that various essential oils have unique impacts on emotion and memory processing in the brain.*
Article Abstract
Introduction: Essential oil inhalation has various effects on the human body. However, its effects on cognitive function and the neural basis remain unclear. We aimed to investigate the effects of inhaling lemon, sandalwood, and kusunoki essential oils on human brain activity and memory function using multichannel electroencephalography and brain source activity estimation.
Methods: Participants performed a letter 2-back working memory task during electroencephalography measurements before and after essential oil inhalation. Brain activation, task difficulty, concentration degree, and task performance were compared among the essential oils and a fragrance-free control.
Results: Task performance significantly improved after lemon essential oil inhalation. Lemon essential oil inhalation resulted in delta and theta band activation in the prefrontal cortex, including the anterior cingulate gyrus and orbitofrontal cortex, superior temporal gyrus, parahippocampal gyrus, and insula. During inhalation, persistent alpha band activation was observed in the prefrontal cortex, including the anterior cingulate gyrus. Sandalwood essential oil inhalation led to beta and gamma band activation in the prefrontal cortex, including the anterior cingulate gyrus.
Conclusion: Our findings demonstrate that different essential oils have specific effects on brain activity related to emotion and memory processing.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9927848 | PMC |
| http://dx.doi.org/10.1002/brb3.2889 | DOI Listing |
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