LEFT BRAIN/ RIGHT BRAIN The brain is divided into two halves, the right each hemisphere other. The and left left half hemisphere, controls the although it is unclear how they differ from movements on the right side of the body. In most people the language area is chiefly on this side. The right half controls the body´s left side.
SIGNAL CODING The nerve cells, synapses and neurotransmitters provide the brain´s raw material. Over time, experiences create patterns in signal type and strength. These patterns explain how the brain codes our thoughts, memories, skills, and sense of who we are. The tomography above shows typical
THE NEURON FOREST The brain work is performed in different individual cells. An adult brain contains 100 billion nerve cells with branches that connect at more than 100 trillion points. Scientists call this a “neuron forest”. The signals that travel through the neuron forest form the memories, thoughts, and feelings. Alzheimer´s disease mainly destroys the neurons. CHEMICAL SYNAPSE (CELL SIGNALING) Signals move through an individual nerve cell as a tiny electrical charge. Nerve cells connect to one another at synapses. When a charge reaches a synapse it may release endogenous chemicals called neurotransmitters, which carries signals to other cells. Alzheimer´s disease disrupts the way electrical charges travel and the activity of neurotransmitters.
patterns of brain activity associated with reading, hearing, thinking and saying words. Activity is highest in red areas and the decreases through the other colors from yellow to blue-violet. Activity patterns change throughout life as we meet new people, have new experiences, acquire skills or when Alzheimer´s or other disorders disrupt nerve cells and their connections to one another. For years now, medical technology has used Magnetic Resonance Imaging to study this terrible disease. MAGNETIC RESONANCE IMAGING Magnetic Resonance Imaging (MRI) is a medical imaging technique used in radiology to visualize internal structures and tissues of the body in detail. It is a large powerful electromagnet that images nuclei of hydrogen atoms inside the body since hydrogen is the