Alzheimer's brain. Computer graphic of a vertical (coronal) slice through the brain of an Alzheimer patient (at left) compared with a normal brain (at right),overlaid a magnetic resonance image (MRI) of a human head. The colour gradient is depicting the MRI scanning process.The Alzheimer's disease brain (red) is considerably shrunken,due to the degeneration and death of nerve cells. Apart from a decrease in brain volume,the surface of the brain is often more deeply folded. Tangled protein filaments (neurofibrillary tangles) occur within nerve cells and patients also develop brain lesions of beta- amyloid protein. Alzheimer's disease accounts for most cases of senile dementia. Symptoms include memory loss,disorientation,personality change and delusion. It ultimately leads to death | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Pasieka, Alfred |
Taille de l’image : | 5500 px × 3930 px |
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