Submitted by lorio on Thu, 2011-02-10 00:00
Where does violence live in the brain? And where, precisely, does it lay down its biological roots? With the help of a new genetic tool that uses light to turn nerve cells on and off, a team led by researchers at the California Institute of Technology (Caltech) has tracked down the specific location of the neurons that elicit attack behaviors in mice, and defined the relationship of those cells to the brain circuits that play a key role in mating behaviors.
Submitted by ksvitil on Wed, 2011-02-02 00:00
The brain—awake and sleeping—is awash in electrical activity, and not just from the individual pings of single neurons communicating with each other. In fact, the brain is enveloped in countless overlapping electric fields, generated by the neural circuits of scores of communicating neurons. The fields were once thought to be a 'bug' of sorts, occurring during neural communication. New work, however, suggests that the fields do much more—and that they may, in fact, represent an additional form of neural communication.
Submitted by lorio on Mon, 2011-01-31 08:00
While we can more or less abstain from some basic biological urges—for food, drink, and sex—we can’t do the same for sleep. At some point, no matter how much espresso we drink, we just crash. And every animal that’s been studied, from the fruit fly to the frog, also exhibits some sort of sleep-like behavior. But why do we—and the rest of the animal kingdom—sleep in the first place?
Submitted by cnk on Thu, 2010-11-18 08:00
Two Caltech researchers—David Anderson and Christof Koch—have been named by the Paul G. Allen Family Foundation among the inaugural group of Allen Distinguished Investigators. The foundation's new program aims to advance important research in neuroscience and cellular engineering.
Submitted by lorio on Wed, 2010-11-10 00:00
A research team led by scientists at Caltech has taken an important step toward understanding the neural circuitry of fear. In a paper published in this week's issue of the journal Nature, they describe a microcircuit in the amygdala that controls, or "gates," the outflow of fear from that region of the brain.
Submitted by ksvitil on Wed, 2010-10-27 09:00
Caltech neuroscientist Christof Koch, postdoc Moran Cerf, and their colleagues have found that individuals can exert conscious control over single neurons in the brain—despite the neurons' location in a brain region previously thought inaccessible to conscious control—and manipulate the behavior of an image on a computer screen.
Submitted by lorio on Mon, 2010-10-04 23:00
As part of a National Institutes of Health (NIH) initiative to stimulate highly innovative research and support promising new scientific investigators, two scientists from Caltech were named among the 2010 class of the NIH Director's New Innovator Award recipients.
Submitted by lorio on Wed, 2010-09-22 07:00
The first pull on a cigarette should send you into convulsions. But instead, smoking can mellow you out and sharpen your mind. The series of unfortunate events by which nicotine works its magic in your brain is now becoming clear.
Submitted by lorio on Mon, 2010-08-23 23:00
Flies follow horizontal edges to regulate altitude, says a team of researchers from the California Institute of Technology (Caltech). This finding contradicts a previous model, which posited that insects adjust their height by visually measuring the motion beneath them as they fly.
Submitted by lorio on Wed, 2010-08-18 23:00
Two scientists from Caltech have been recognized by the National Institutes of Health for their innovative and high-impact biomedical research programs. Michael Roukes, professor of physics, applied physics, and bioengineering, and co-director of the Kavli Nanoscience Institute, and Pamela Bjorkman, Caltech's Max Delbrück Professor of Biology and a Howard Hughes Medical Institute investigator, now join the 81 Pioneers who have been selected since the program's inception in 2004.