منابع مشابه
The Aging Brain
According to the United States Department of Health and Human Services Administration on Aging, more than 14 percent of the US population is 65 or older, a percentage that is predicted to steadily increase over the next several decades. The rapid growth of this segment of the population is not a phenomenon limited to the United States — the global population is aging as well. A recent report by...
متن کاملStimulating the aging brain.
S uccess in using noninvasive neural stimulation in humans has paved the way for several exciting additions to the ever-expanding toolkit used by cogni-tive neuroscientists to understand the relationship between brain and behavior (eg, transcranial magnetic stimulation and transcranial direct current stimulation [tDCS]). Although neuroimaging methods such as functional MRI and electroencephalog...
متن کاملThe Aging Human Brain
The human brain weighs on average about three pounds, consists of 200 billion cells. Surprisingly, there are only two categories of brain cells, neurons and glia, but more than 50 different cellular subtypes. Nerve cells or neurons are specialized cells that are electrically excitable, and processes and transmit information to other neurons and cells through electrochemical signaling v...
متن کاملBrain size, sex, and the aging brain.
This study was conducted to examine the statistical influence of brain size on cortical, subcortical, and cerebellar compartmental volumes. This brain size influence was especially studied to delineate interactions with Sex and Age. Here, we studied 856 healthy subjects of which 533 are classified as young and 323 as old. Using an automated segmentation procedure cortical (gray and white matter...
متن کاملNormal Aging of the brain
With the increase of the mean age of our populations, neurodegenerative diseases are becoming more and more important. This is also true for the early diagnosis of neurodegeneration and to allow for an early therapeutic intervention since degenerative diseases begin long before the patient experiences any symptoms. It can be months or years before clinical symptoms become obvious. Imaging with ...
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ژورنال
عنوان ژورنال: Science
سال: 2014
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.346.6209.566