MEDICAL ANIMATION TRANSCRIPT: The brain's cognitive functions include memory, which is the process of information retention and retrieval. Memories form in the hippocampus, which consists of information-processing cells called neurons. Each neuron receives chemical messages from other neurons via dendrites, then converts the message to an electrical charge called an action potential. In the space between them, neurons release stimulatory chemicals called neurotransmitters, which bind with receptors on the receiving cell and transfer information. Alzheimer's disease is a gradual, degenerative brain condition in which neurons in the memory and other cognitive areas of the brain lose function and die, resulting in progressive memory loss first, then difficulties learning and communicating, and, eventually, failing basic functions like breathing. In healthy neurons, enzymes help process a protein called amyloid precursor protein into fragments which help with normal cell function. In Alz...