Processes Which Affect the Dementia Brain

Alzheimer’s affects the brain in many ways, but can be divided into structural, and chemical changes. Both processes impact the brain negatively and affect the person’s ability to function as they once did.

Structurally, the brain has many components:

  • the frontal, parietal, temporal, and occipital lobes
  • the limbic system
  • the hippocampus

These components are what we conceive of as separate regions of the brain, due to each region’s unique responsibility for various day-to-day tasks essential for functioning normally.

Furthermore, the right side of the brain and the left side of the brain control various functions, including language and movement. Within the different regions of the brain, work is being done on a cellular level.

Chemically, tiny electrical charges or “signals,” move through individual cells and parts of the brain, channeling thoughts and memories. A person with Alzheimer’s disease experiences interruptions in this activity, which then causes interruptions with the activities mentioned above, and more (Alzheimer Society 2011).

Read on to find out more about the two types of changes which occur.

Alzheimers Association. 2011. Brain Tour. Available at: Accessed April 30th, 2011.