Alzheimer

Sensation and Perceptions in Alzheimer’s
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Abstract
Alzheimer’s disease is defined as a chronic neurodegenerative disease which leads to progressive loss of short term memory and eventually long term memory. Individuals with Alzheimer’s cannot recollect recent events or learning. The perceptions of individuals include rapid swing in moods, loss of motivation, impaired speech and cognitive disorientation. Alzheimer’s disease occurs mainly in the age group between 40 years and 60 years. The most accepted hypothesis neurodegeneration is the “Beta Amyloidal Hypothesis”. The memory pathway includes connections of neurons. These neurons act as relay centers for learned events. Accumulation of beta-amyloidal proteins causes degeneration of these neurons, leading to an inability of forming short term memory. The perceptions and sensations of individuals related to Alzheimer’s depend upon the stage of Alzheimer’s. Alzheimer’s is divided into four stages. The first stage is called the pre-Alzheimer’s period. It’s marked by ageing effects on memory, but there are no neurodegenerative episodes. The sensations include occasional forgetfulness. The second stage is called the early stage of Alzheimer’s. It is marked by non-remembrance of episodes of forgetfulness. During this stage, the individual often forgets names of family members and close friends. The next stage is known as the middle stage of Alzh…