Agriculture
Earth-Friendly Fabrics
Treating peanut allergy bit by bit
Fast-flying fungal spores
Amphibians
Toads
Frogs and Toads
Bullfrogs
Animals
Mouse Songs
Insect Stowaways
A Wild Ferret Rise
Behavior
Math is a real brain bender
Storing Memories before Bedtime
The Smell of Trust
Birds
Eagles
Seagulls
Pelicans
Chemistry and Materials
The Incredible Shrunken Kids
The science of disappearing
When frog gender flips
Computers
The Earth-bound asteroid scientists saw coming
Lighting goes digital
The Shape of the Internet
Dinosaurs and Fossils
A Living Fossil
The bug that may have killed a dinosaur
The Paleontologist and the Three Dinosaurs
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
Earth
What is groundwater
On the Trail of America's Next Top Scientists
A Volcano's Deadly Ash
Environment
The Best Defense Is a Good Snow Fence
Whale Watch
Island Extinctions
Finding the Past
Salt and Early Civilization
The Puzzle of Ancient Mariners
An Ancient Childhood
Fish
Electric Catfish
Sturgeons
Whale Sharks
Food and Nutrition
Strong Bones for Life
Moving Good Fats from Fish to Mice
Symbols from the Stone Age
GSAT English Rules
Subject and Verb Agreement
Order of Adjectives
Pronouns
GSAT Exam Preparation Jamaica
Mastering The GSAT Exam
42,000 students will sit for the GSAT Exam in two weeks
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
GSAT Exams Jamaica Scholarships
GSAT stars reap scholarship glory
42,000 students will sit for the GSAT Exam in two weeks
2014 GSAT Results for Jamaican Kids
GSAT Mathematics
10 Common Mistakes When Preparing for the GSAT Math Test
Monkeys Count
It's a Math World for Animals
Human Body
Walking to Exercise the Brain
What the appendix is good for
Germ Zapper
Invertebrates
Sea Urchin
Oysters
Sponges
Mammals
A Grim Future for Some Killer Whales
Pekingese
Dogs
Parents
What Not to Say to Emerging Readers
Children and Media
How children learn
Physics
The Particle Zoo
IceCube Science
Strange Universe: The Stuff of Darkness
Plants
Sweet, Sticky Science
Stalking Plants by Scent
Flower family knows its roots
Reptiles
Komodo Dragons
Cobras
Copperhead Snakes
Space and Astronomy
Sounds of Titan
Saturn's Spongy Moon
An Earthlike Planet
Technology and Engineering
Toy Challenge
Musclebots Take Some Steps
Morphing a Wing to Save Fuel
The Parts of Speech
Countable and Uncountable Nouns
Pronouns
What is a Noun
Transportation
Revving Up Green Machines
Tinkering With the Basic Bike
How to Fly Like a Bat
Weather
Earth's Poles in Peril
Recipe for a Hurricane
Science loses out when ice caps melt
Add your Article

Making Sense of Scents

The nose knows. Your sense of smell can quickly alert you to freshly baked, chocolate chip cookies, a fragrant flower, or a stinky pair of socks. Now, scientists have a better idea of how the brain makes sense of all these scents. Particular smells appear to turn on particular combinations of brain cells, researchers suggest. When your nose catches a whiff of something, one of 1,000 different types of odor-receiving cells picks it up. These cells send an electrical signal to a region of the brain called the olfactory bulb. From there, the message is transmitted to a smell-specific section of the cortex, the part of the brain that handles thinking and perception. To see what happens when smell messages hit the cortex, a group of scientists studied mouse brains. The researchers first exposed the mice to distinctive scents, such as vanilla, apples, or fish. They then examined thin slices of each mouse's brain, looking for which brain cells had been turned on by each odor. The scientists discovered that aromas activate a number of cells scattered throughout the smell cortex. Each scent produces a similar pattern of active cells in different mice. So, a certain combination of cells tells a mouse that it's smelling vanilla, apples, fish, or any one of thousands of other odors. The investigators also found that when mice smell a stronger scent, it activates more cells over a larger area. And when they looked at how mouse brains light up after the animals smell two scents that are similar, the patterns are similar as well. This points to a sort of logic behind how smells activate the cortex, the researchers suggest. Scientists could use studies like this to create a map of which parts of the brain are activated by different smells. Another smell scientist, however, says that researchers should also do studies on animals that don't live in a lab, but have spent their lives smelling things in the natural world. With more smelling experience, they might show quite different patterns.K. Ramsayer

Making Sense of Scents
Making Sense of Scents








Designed and Powered by HBJamaica.com™