As the largest resource of information specific to women's brain health, we are sure you will find what you are looking for, and promise that you will discover new information.
Published on: May 20, 2014
by Science Codex:
Researchers have developed a new cognitive test that can better determine whether memory impairments are due to very mild Alzheimer’s disease or the normal aging process.
Their study appears in the journal Neuropsychologia.
The Alzheimer’s Association estimates that the number of Americans living with Alzheimer’s disease will increase from 5 million in 2014 to as many as 16 million by 2050. Memory impairments and other early symptoms of Alzheimer’s are often difficult to differentiate from the effects of normal aging, making it hard for doctors to recommend treatment for those affected until the disease has progressed substantially.
Previous studies have shown that a part of the brain called the hippocampus is important to relational memory – the “ability to bind together various items of an event,” said Jim Monti, a University of Illinois postdoctoral research associate who led the work with psychology professor Neal Cohen, who is affiliated with the Beckman Institute at Illinois. Being able to connect a person’s name with his or her face is one example of relational memory. These two pieces of information are stored in different parts of the brain, but the hippocampus “binds” them so that the next time you see that person, you remember his or her name, Monti said.
Previous research has shown that people with Alzheimer’s disease often have impairments in hippocampal function. So the team designed a task that tested participants’ relational memory abilities.
Participants were shown a circle divided into three parts, each having a unique design. Similar to the process of name-and-face binding, the hippocampus works to bind these three pieces of the circle together. After the participants studied a circle, they would pick its exact match from a series of 10 circles, presented one at a time.
People with very mild Alzheimer’s disease did worse overall on the task than those in the healthy aging group, who, in turn, did worse than a group of young adults. The task also revealed an additional memory impairment unique to those with very mild Alzheimer’s disease, indicating the changes in cognition that result from Alzheimer’s are qualitatively different than healthy aging. This unique impairment allows researchers to statistically differentiate between those who did and those who did not have Alzheimer’s more accurately than some of the classical tests used for Alzheimer’s diagnosis, Monti said.
“That was illuminating and will serve to inform future work aimed at understanding and detecting the earliest cognitive manifestations of Alzheimer’s disease,” Monti said.
Although this new tool could eventually be used in clinical practice, more studies need to be done to refine the test, he said.
“We’d like to eventually study populations with fewer impairments and bring in neuroimaging techniques to better understand the initial changes in brain and cognition that are due to Alzheimer’s disease,” Monti said.
Researchers asked participants to study a circle divided into three patterned parts then pick an exact match from a series of 10 other circles. This task measures the performance of a part of the brain called the hippocampus, which has been shown to sustain damage in Alzheimer’s disease.
(Photo Credit: Jim Monti)
Celebrities and other powerful Hollywood names gathered at the elite Gagosian Gallery in Beverly Hills for a special event hosted by Sharon Stone, to raise awareness for Women’s Brain Health Initiative. View the gallery
Women have a harder time of it than men when Alzheimer disease (AD) strikes, according to a multicenter team of investigators from the University of Central Missouri, Medical College of Wisconsin, and University of...
Sharon Stone has given stunning performances in her movie career, but none so memorable as the real-life story that she told in front of a rapt audience at the Gagosian gallery in Beverly...
The material presented through the Think Tank feature on this website is in no way intended to replace professional medical care or attention by a qualified practitioner. WBHI strongly advises all questioners and viewers using this feature with health problems to consult a qualified physician, especially before starting any treatment. The materials provided on this website cannot and should not be used as a basis for diagnosis or choice of treatment. The materials are not exhaustive and cannot always respect all the most recent research in all areas of medicine.