Jon Hamilton appears in the following:
Monday, April 14, 2014
Scientists have figured out one reason women might be more vulnerable to Alzheimer's: A risk gene doubles women's chances of getting the disease but has minimal effect on men.
Tuesday, April 08, 2014
Childhood amnesia descends gradually — and later than you might think, researchers say. Many 7-year-olds have robust memories of experiences from when they were 3 or even younger.
Wednesday, April 02, 2014
In nine months the human brain grows from a single cell to more than 80 billion. Mapping how genes are activated gives scientists clues to the origins of mental disorders like autism.
Wednesday, April 02, 2014
A Senate committee vote, expected this week, marks the latest chapter in a bitter power struggle between Congress and the CIA over detention and interrogation practices.
Thursday, March 27, 2014
The number of children diagnosed with autism keeps rising, but researchers warn that it may be just because we're getting better at recognizing and treating the disorder.
Wednesday, March 26, 2014
The organization of certain brain cells in children with autism seems already different from that of typical children by the sixth or seventh month of fetal development, a study hints.
Wednesday, March 19, 2014
The approach would recognize changes in behavior and in the brain. Right now there are no treatments that slow down the disease, but identifying high-risk patients early on could help with prevention.
Sunday, March 09, 2014
A new blood test for people in their 70s can detect who will develop Alzheimer's disease. A positive result could help people prepare. But since there's no treatment, will people really want to know?
Wednesday, February 26, 2014
There's been lots of debate about whether tiny amounts of the chemical have the potential to cause health problems. A new FDA study supports a previous conclusion that the chemical is safe for people.
Monday, February 24, 2014
Izidor Ruckel lived in a Romanian orphanage where children were neglected. Scientists say that lack of attention can damage a child's brain. But Ruckel thinks his adoptive parents' love saved him.
Monday, January 27, 2014
Researchers say changes rolled out last May are likely to have a bigger effect on government statistics than on the care of the nation's children. Still, advocates worry that narrower definitions could lead to a loss of coverage for some children.
Friday, November 29, 2013
Forecasters expected the 2013 Atlantic hurricane season to be really busy — the National Oceanic and Atmospheric Administration told Americans to expect between seven and 11 hurricanes. But this year has been one of the quietest on record. Why were the predictions so far off?
Thursday, November 28, 2013
Scientists have identified special cells in the brain's hippocampus that mimic a trick of some digital cameras. These cells automatically 'tag' the memory of each event in our lives with information about where that event took place — the better to recall, perhaps, where we left our lost keys.
Monday, November 25, 2013
Everybody knows that you're not supposed to smoke while you're pregnant because it's bad for the baby. But nicotine patches often used to help women quit may pose a risk, too, researchers say. Other forms of nicotine replacement may do less harm.
Monday, November 04, 2013
Brain scans may help people who were ill treated as children realize that they process fear differently than others. They may have a harder time realizing what's truly a threat and what's not. Researchers say that can lead to increased risk of anxiety and depression.
Monday, October 28, 2013
Humans and other primates have really good vision. One scientist thinks that ability evolved in part to help monkeys and humans quickly recognize venomous snakes. When monkeys see photos of snakes, neurons in a specific part of the brain light up. The neurons respond to photos of the reptiles more than to monkey faces.
Thursday, October 17, 2013
While mice sleep, their brain cells shrink, allowing cerebrospinal fluid to flow easily around them. The fluid can then clear away toxins. This finding appears to offer the best explanation yet of why animals and people need sleep.
Wednesday, September 04, 2013
The aging brain may be more flexible than we thought, a study of older adults now suggests. After playing a racing car video game an hour a day, thrice weekly for a month, adults age 60 and over were better at multitasking than untrained 20-year-olds.
Thursday, August 29, 2013
Age-related fumbles of memory are often feared as early signs of Alzheimer's dementia, but recent research confirms an important difference. The underlying biology of the two sorts of memory loss aren't the same. And the age-related form may be reversible someday.
Monday, August 12, 2013
From human growth hormone to EPO, many sports doping products these days come from big drug companies, not rogue chemists. Scientists and body builders warn that new drugs being developed to treat muscle wasting disease will also likely be abused by athletes — with little chance of detection.