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A normal centenarian brain, cut in the coronal plane (top left) is compared to a brain with LATE-NC (top right). The hippocampi on both sides are atrophic (shrunken) in the brain with LATE-NC. The bottom 3 panels show photomicrographs of a hippocampus with LATE-NC, stained for phosphorylated TDP-43 protein (TDP-43).
Hippocampal sclerosis is the most common brain abnormality in those with temporal lobe epilepsy. [16] Hippocampal sclerosis may occur in children under 2 years of age with 1 instance seen as early as 6 months. [17] About 70% of those evaluated for temporal lobe epilepsy surgery have hippocampal sclerosis.
On rare occasion, infarcts in the hippocampus or thalamus are the cause of dementia. [12] A history of stroke increases the risk of developing dementia by around 70%, and recent stroke increases the risk by around 120%. [13] Brain vascular lesions can also be the result of diffuse cerebrovascular disease, such as small vessel disease. [5]
Image 2: Cross-section of cerebral hemisphere showing structure and location of hippocampus Image 3: Coronal section of the brain of a macaque monkey, showing hippocampus (circled) The hippocampus can be seen as a ridge of gray matter tissue, elevating from the floor of each lateral ventricle in the region of the inferior or temporal horn.
Structural changes continue during adulthood as brain shrinkage commences after the age of 35, at a rate of 0.2% per year. [4] The rate of decline is accelerated when individuals reach 70 years old. [5] By the age of 90, the human brain will have experienced a 15% loss of its initial peak weight. [6]
1949. Overall life expectancy: 68 Women: 70.7 Men: 65.2 1949 marked the first year women’s life expectancy eclipsed 70 — a milestone men would not reach for another three decades.
However, the Centers for Disease Control and Prevention (CDC) recommends doing these things to lower your risk of developing dementia: Be physically active Try to prevent or manage diabetes
The hippocampal formation is a compound structure in the medial temporal lobe of the brain. It forms a c-shaped bulge on the floor of the temporal horn of the lateral ventricle . [ 1 ]