HOME >> MEDICINE >> NEWS
Memory loss affects more of the brain than previously thought

OAK BROOK, Ill. -- Memory loss associated with early Alzheimer's disease (AD) may be linked to altered activity in several areas of the brain, according to a study in the July issue of Radiology.

For the first time, researchers at Duke University Medical Center in Durham, N.C., used a special, high-field- strength, functional magnetic resonance imaging (fMRI) scanner to study the brain activity of people with amnestic mild cognitive impairment (MCI), a precursor to AD, and found altered functionality in both the frontal and temporal lobes of the brain. Previous studies looking at structural changes alone have shown evidence that brain atrophy in the earliest stages of AD tends to be restricted to the temporal lobe, a region critical to long-term memory formation.

"Involvement of both the frontal and temporal lobes in the earliest stages of AD suggests the possibility of a breakdown in the communication pathway between these two regions, which house short-term and long-term memory, respectively," said lead author Jeffrey R. Petrella, M.D., associate professor of radiology and director of Alzheimer's Disease Imaging Research Laboratory at Duke. "So in many ways the AD brain may be like a computer that is having problems with both its temporary files and its hard-drive files."

MCI affects an estimated 15 percent of the elderly population in the United States. Ten to 15 percent of people with MCI develop AD every year compared to one percent of the normal elderly population. Amnestic MCI is characterized by mild memory impairment and is often confused with ordinary age-related forgetfulness.

The researchers used 4-Tesla fMRI, which has a very strong magnetic field, to observe the brain activity of 20 elderly patients with amnestic MCI and 20 age-matched controls with no memory impairment during a memory task that tested memory formation and retrieval.

"It's like doing a treadmill test for heart patients, except this test puts you
'"/>

Contact: Heather Babiar
hbabiar@rsna.org
630-590-7762
Radiological Society of North America
27-Jun-2006


Page: 1 2

Related medicine news :

1. Memory improves after sleep apnea therapy
2. 4th International Conference on Memory
3. Memory function: There is hope for alcoholics with Korsakoff Syndrome
4. Memory problems at menopause: Nothing to forget about
5. Threats to hope -- Desperation affects reasoning about product information
6. New survey uncovers how insomnia affects job performance and safety
7. Sleep restriction affects childrens speech
8. Born to lose: How birth weight affects adult health and success
9. Conception date affects babys future academic achievement
10. Sleep quantity affects morning testosterone levels in older men
11. Position of car indicator lights affects safety -- designers should take note

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:9/1/2020)... ... 2020 , ... Dr. Kiran Gill is a Board Certified ... face, breast, and body. In 2018, she founded Aesthetics in Plastic Surgery by ... practice in Southwest Florida. Dr. Gill and her team offer surgical and non-surgical ...
(Date:8/31/2020)... ... August 31, 2020 , ... ... 1,400 N95 face masks to medical first responders across the United States. Since ... donations of personal protective equipment (PPE) medical centers , hospitals , ...
(Date:8/31/2020)... (PRWEB) , ... August 31, 2020 , ... ... business support services to dental groups in the United States, today announced the ... community of Beaumont, CA. , Patients will enjoy convenient hours, a comfortable ...
(Date:8/31/2020)... ... August 31, 2020 , ... Dr. Chang has ... with autism and other developmental disabilities, as well as supporting staff in caring ... with autism, school consultation, and staff development. She joined the company in 2015 ...
(Date:8/28/2020)... Ariz. (PRWEB) , ... August 28, 2020 , ... ... respiratory assist system designed to help treat patients with respiratory conditions, including COVID-19, ... mixture of helium and oxygen, but it captures exhaled gas and scrubs it ...
Breaking Medicine News(10 mins):
(Date:9/1/2020)... ... September 01, 2020 , ... Breast and ovarian cancers are common ... About 3% of breast cancers (about 7,500 women per year) and 10% of ovarian ... BRCA2 genes. Both genes are detectable in the Women’s Excellence Genetic Testing Program. ...
(Date:8/31/2020)... ... 31, 2020 , ... Continuing on its rapid national expansion ... and deodorization provider - is proud to announce it has opened doors in ... and residents throughout the area. , Germinator provides a 100% safe and non-toxic ...
(Date:8/28/2020)... ... August 28, 2020 , ... Dr. Raheleh Sarbaziha ... unique perspective and approach. Armed with her qualifications from Ross University School of ... knowledge of the human body with the nation and world. With a fellowship ...
Breaking Medicine Technology:
Cached News: