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Tag: "odors" at biology news

Scientists journey to southern Africa to unravel the secret world of elephant communication

...nses of smell and hearing on unfamiliar noises and odors in the air. But O'Connell-Rodwell believes they could be responding to tactile sensations as well. "Bulls often lay their trunk on the ground when freezing," she observes. "We think they may be using it as a tool to detect vibrations in the earth." ...

Decoding the logic of olfaction

...he brain, ultimately leading to the perceptions of odors and their emotional and physiological effects. Al...ts in the cortex, it was impossible to predict how odors might be represented in this structure. They therefore decided to investigate the patterns of activi...

Genpathway and Baylor College of Medicine Identify New Genes in Breast Cancer

...he brain, ultimately leading to the perceptions of odors and their emotional and physiological effects. Al...ts in the cortex, it was impossible to predict how odors might be represented in this structure. They therefore decided to investigate the patterns of activi...

Study shows humans have ability to track odors, much like bloodhounds

...rnia, Berkeley. Student volunteers presented with odors to one nostril or the other could reliably discern...Porter and Sobel plan to train volunteers to track odors in the field and test the limits of odor localization in humans. Porter, Sobel and their colleagues...

Nose odors and mouth odors: The brain distinguishes

...oration into the brain's possible dual response to odors because of the well-known phenomenon that sensing ... mouth. "The illusion that retronasally perceived odors are localized to the mouth is so powerful that people routinely mistake retronasal olfaction for 'ta...

Rodent social behavior encoded in junk DNA

... and lateral septum). They also checked out female odors and greeted strangers more readily and were more apt to form pair bonds and nurture their young. "If you think of brain circuits as locked rooms, the vasopressin receptor as a lock on the door, and vasopressin as the key that fits it, only those cir...

Hopkins scientists uncover 'tags' that force proteins to cell surface

...Among the "problem proteins" are those that detect odors in the nose, and the protein that's faulty in cystic fibrosis. Being able to force these to the cell surface in laboratory dishes might enable identification of more potent scents or ways to help people who can't smell, or help uncover new strategies...

Researchers Create DNA-Based Sensors for Nano-Tongues and Nano-Noses

...A can create tiny sensors with abilities to detect odors and tastes, according to researchers at the University of Pennsylvania and Monell Chemical Sciences Center. Their findings are published in the current issue of the journal Nano Letters, a publication of the American Chemical Society. According to t...

Pulp mill devastates swans' sanctuary in Chile

... in Valdivia, 30 miles away, complained of noxious odors from the plant and the WWF mission found the facility's waste treatment, storage and disposal safeguards to be appalling. "Filter ashes, which can contain dioxins, and other potentially toxic waste were simply being dumped together in an open air sit...

New study examines how sense of smell affects mating and aggression in mice

...cavity and contains sensory neurons that recognize odors and transmit this information to the brain. The s...ooming perfume industry attests to our belief that odors can attract potential suitors, and there are some studies in humans that suggest pheromone-type sign...

Neurons generated in the adult brain learn to respond to novel stimuli

...ice were then exposed either to a panel of unusual odors or to a normal environment. Several weeks later, ... olfactory neurons of mice exposed to the panel of odors subsequently responded more strongly to those odors than did adult-born neurons of mice that had no ...

The brain is broadly wired for reproduction

...p in understanding the far-reaching influence that odors and pheromones may have on reproduction and other behaviors. The research team, which was led by HHMI investigator Linda B. Buck at the Fred Hutchinson Cancer Research Center, included first author Ulrich Boehm and Zhihua Zou, who did the work as po...

UCR environmental scientists propose chemical solution to cleaning California's Salton Sea

...e growth, improves water clarity and decreases the odors common at the lake," said Christopher Amrhein , p...d an increasing level of salinity. Due to noxious odors emanating from the Salton Sea, a 32 kilometer-long State Recreation Area on the northeast shore rema...

Tracking the memory trace

... first stored in the insect's antennal lobe (where odors are processed). The flies are trained to associate an odor with an electric shock. The change in these neurons was immediate, but lasted only five to seven minutes. In the more recent report involving the DPM neurons, the change can be seen 30 minu...

When mice choose mates, experience counts

...n, Pfaff and his colleagues exposed female mice to odors of either a male mouse alone or a male mouse with ...that over the scent of a healthy lone male. "Male odors can provide female mice with information on their quality, condition, health and suitability as a po...

'Dead zone' summer killed billions of ocean state mussels

Fish kills, foul odors and closed beaches hit Rhode Island's Narragansett Bay during the summer of 2001. The culprit was hypoxia, or oxygen depletion, which literally suffocates sea life. While some evidence of this "dead zone" could be seen on the bay's surface, Brown Uni...

Light guides flight of migratory birds

...eons navigated. There was a theory that wind-borne odors provide pigeons with information about the locations of odor sources, which could then be used to determine their position relative to the home loft when they were released at an unfamiliar site. The birds were housed in a loft with a "pinwheel" arra...

Researchers show how brain decodes complex smells

...rs, the Duke researchers exposed mice to different odors and measured response of neurons across the olfactory bulb with intrinsic signal imaging. The imaging technique maps brain activity by detecting changes in reflected light from the brain with a sensitive camera. To start, the researchers separated a...

Quick -- what’s that smell?

... would have capabilities such as identification of odors for medical diagnosis or detection of land mines." ...

The secret lives of sea slugs

...andomly around the sea. In fact, they respond to odors and other sensory cues by initiating beneficial navigational behaviors, including escaping from predators by swimming up into water currents that hurl them (un-sluggishly) end over end downstream and away from harm, as well as crawling aggressively (...

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