The healthy human brain contains tens of billions of neurons specializes cell that process and transmit information via electrical and chemical signals.in terms of accessing a memory from the dark recesses of the brain, signals from the frontal cortex link to that memory via uncertain means, and the memory is reconstructed from the information available. Alzheimer’s dieses disrupt this communication among neurons, resulting in loss of function and cell death. The problem here is not that the memory is disappeared, but rather that they can not recall it.
Alzheimer takes the short memory from the Patient and throws him into the past. The world that his daughter is still a child and may cause a trouble by running around the pool. Moments fade away and present people faces are vanishing gradually but life is still going on in the past with some familiar faces in a particular occasions.