All articles tagged with #scent
A study found that wearing rose scent oil for a month can increase gray matter volume in specific brain regions, particularly the posterior cingulate cortex, which is linked to memory and association. This suggests that certain scents might influence brain structure and could have potential in preventing neurodegenerative conditions like dementia, although more research is needed.
A recent study published in JAMA Network Open suggests that familiar scents could help individuals with depression recall memories more easily than verbal cues, potentially aiding in mental health treatment. Using odors to access specific memories may improve problem-solving and emotion regulation, and could help alleviate depression. The study found that memories cued by scents were more specific and vivid than those sparked by verbal cues, and tended to be more positive. Fragrances associated with positive past experiences have been shown to elevate mood, buffer anxiety, and strengthen social connectedness, making them effective in retrieving nostalgic memories. The researchers aim to conduct larger studies to further investigate the link between scents and memories in those with depression.
Astronauts often describe a unique smell after returning from spacewalks, comparing it to burnt steak, spent gunpowder, and hot metal. While no one has directly smelled space and lived to tell the tale, the scent is believed to come from chemical reactions triggered by atomic oxygen clinging to spacesuits and other items exposed to space, as well as potential molecules from dying stars. NASA commissioned a scent called Eau de Space to simulate the smell of space for astronaut training, based on astronauts' descriptions. However, there is limited data from official studies on the origin of the smell.
Perfume expert Caroline Stern, who owns over 220 bottles of perfume and has tested around 600, has shared her top picks for long-lasting fragrances that can last for more than 10 hours. Her recommendations include Erba Pura by Xerjoff, Roses Vanille by Mancera, Dolce Diablo by Narcotica, Althaïr by Parfums de Marly, and Tobacco Honey by Guerlain. Stern advises looking for perfumers rather than just brands when searching for long-lasting scents and suggests paying attention to the word "extrait" on perfume bottles, as it indicates a higher concentration of fragrance.
New research suggests that exposing older adults to pleasant scents while they sleep could potentially improve memory and cognitive function. In a study conducted by researchers at the UCI Center for the Neurobiology of Learning and Memory, participants who used an essential oil diffuser by their bedside for two hours each evening over six months showed a significant improvement in word recall memory compared to control participants. Brain imaging also revealed improved integrity in the memory-related brain pathway that typically declines with age. This simple and effortless approach leverages the direct connection between smell and memory, providing a potential method to deter age-related memory loss.
The distinct aroma of our homes is a combination of many scents, including air fresheners, candles, laundry detergent, cleaning products, and food. Our personal smells are tied to our unique DNA sequence, and the scents of our homes hint at where we live. The tie between human emotions and sense of smell is stronger than with other senses, and the smell of our homes becomes entangled with our recognition of comfort and security.
A study led by Cornell University found that humidity is as important as scent in attracting pollinators to a plant. The research advances basic biology and opens new avenues to support agriculture. Until now, the study of pollination and plant-insect interactions has focused on visual and scent markers, but insects are far more adept than humans at sensing changes in humidity, carbon dioxide, and temperature. The findings could help farmers and food distributors encourage pollination of food crops or direct insects away from stored foods and toward traps.
While there is little research-based evidence, anecdotal reports suggest that dogs may be able to detect pregnancy through changes in scent and behavior. Dogs' sense of smell is highly sensitive to changes in pheromones and hormones, and they may pick up on the scent difference caused by a woman's hormonal changes during pregnancy. However, dogs should not be relied upon as the sole diagnostic tool, and their findings should always be confirmed by medical professionals. It is important to prepare dogs for the arrival of a new baby by playing recordings of baby sounds and letting them sniff baby items.
Researchers from Beihang University and the City University of Hong Kong have developed two types of wearable odor generators that can create up to nine scents, including rosemary, mojito, pancake, pineapple, and ginger. The generators contain scented wax that can be heated in about 1.44 seconds to release the desired scent in a localized area. The researchers hope their version of this tech could be used to create a more immersive user experience in video games or 4D films as well as virtual teaching environments.