A new study says it isn't just human memories that fade - aging impacts the ability of honey bees to find their way home as well.
Bees are typically impressive navigators, able to wend their way home through complex landscapes after visits to flowers far removed from their nests, even after three to four days of flight time. Mature bees have piloted their way to and from the hive for five to 11 days and old bees have had more than two weeks of flight time but the paper says that aging impairs the bees' ability to extinguish the memory of an unsuitable nest site even after the colony has settled in a new home.
Intense, passionate feelings of love can provide effective pain relief on a par with painkillers or even illicit drugs like cocaine, according to a new study.
That's not to say you should rely on a string of affairs when you have a headache, but a better understanding of these neural-rewards pathways that get triggered by 'love', or winning money, could lead to new methods for producing pain relief.
Temple psychologist Ingrid Olson, who dedicates her research to understanding human memory, has found a way to improve the recall of proper names - electricity.
Electric stimulation of the right anterior temporal lobe of the brain using transcranial direct current stimulation (tDCS) improved the recall of proper names in young adults by 11 percent - that will sure teach those kids.
What's more universal in culture than a "thumbs up"?
To our brains, whether we seem to have a cultural familiarity or not, it isn't familiar at all, says new research in Human Brain Mapping.
People seem to react quickly and intuitively to body language, tone of voice and gaze but gestures are different, at least when the gesturer offers no other cues. Less surprisingly, the new study also found that same-race interaction leads to greater activity in the mirror neuron system, a region of the brain linked to subconscious imitation.
When you drink a soda, you may not think it has much in common with horseradish or peppers, but your body does.
New research from USC says the carbon dioxide in fizzy drinks triggers the same pain sensors in the nasal cavity as mustard or other spicy foods, though at a lower intensity. That burning sensation people feel in different degrees comes from a system of nerves that respond to sensations of pain, skin pressure and temperature in the nose and mouth.
Researchers have created artificial neural networks that can distinguish between different kinds of tea leaves - most people can't do that. But they do it by analyzing the mineral content.
Their method makes it possible to distinguish between the five main tea varieties (white, green, black, Oolong and red) using chemometrics, a branch of chemistry that uses mathematics to extract useful information from data obtained in the laboratory.
How the bundles of neurons in the brain control behavior remains an ongoing mystery and sexual behavior is among the biggest mysteries of all.
Not only do animals come in different shapes and sizes, but they all exhibit different behaviors as well - each species is born with its own unique set of innate behaviors but how they are controlled by the brain is not well understood. Drosophila melanogaster , the 'fruit fly', is a big help in this sort of research because sex is a behavior the fruit fly does well. Their reproductive prowess has ensured their place throughout the world.
We know people have positive social behavior in part because of emotional reactions to real or imagined social harm - we may not like seeing others slighted or we may not want to be perceived as the kind of person who does that sort of thing.
But some are a lot more sensitive than others and a new study says that the neurotransmitter serotonin can directly alter both moral judgment and behavior through increasing our aversion to personally harming others, rather than just controlling violent impulses or helping you sleep.
Think boys mature faster than girls? Or vice versa? Let's go to the MRI!
Researchers at Oregon Health&Science University and Washington University in St. Louis say they can now accurately predict a young person's age simply by taking an MRI brain scan and analyzing it with a numerical model.
Since man has been able to think about big issues, such as why we are the way we are, it has been known that what happens during the daytime, including emotional stress and physical activity, can affect sleep. When an animal is active and awake, research shows, regulatory substances also build up in the brain that induce sleep.
But what in wakefulness is driving these sleep regulatory substances? Sleep disorders affect between 50 and 70 million Americans, according to the Institute of Medicine of the National Academies. The Institute also estimates the lost productivity and mishaps of fatigue cost businesses roughly $150 billion, while motor vehicle accidents involving tired drivers cost at least $48 billion a year.