rforming a memory task, however, showed clear differences between the two groups. As the participants tried to remember if they'd seen a particular shape before, one pattern of brain activation appeared in the APOE- 4 carriers while a different pattern appeared in the non-carriers.
Dr. Scarmeas says the difference may indicate that APOE- 4 carriers have to compensate for early damage done by Alzheimer's by switching to an alternate brain network to complete the task. It could also be that their different genetic makeup results in different patterns of brain activity.
In previous studies, Dr Scarmeas has demonstrated APOE-related changes in brain activity in patients that already have Alzheimer's disease and in healthy, young, college-age people. Drs Scarmeas, Stern and a large group of other researchers at the Taub Institute are using advanced brain imaging techniques to examine changes in cognition and brain function as a result of normal aging and brain diseases, such as Alzheimer's disease.
Page: 1 2 Related medicine news :1
Contact: Karen Zipern
Columbia University Medical Center
. Combining PET and CT scans leads to more accurate radiation therapy for lung cancer patients2
. Stanford study questions accuracy of ads for body scans3
. New technique scans electrical brainscape4
. 3D neutron-based medical imaging, 4D lung scans, and hitting a moving tumor5
. MRI scans could be acceptable alternative to x-rays6
. Chemical brain scans may help reassure brain tumor patients7
. Lung tumor therapies improved by combining CT and PET scans8
. New study supports use of PET scans in early diagnosis of Alzheimers disease9
. Brain scans show how placebo eases pain10
. PET scans superior in revealing response to treatment for gastrointestinal stromal tumors11
. CT scans find tiny bladder, kidney & urinary cancers