If oxygen is not available, a cascade-effect of problems occurs. Such neurotransmitters act to regulate the brain's many complex functions. HAI can be caused by a variety of disease processes and injuries. Unless the person has just climbed Mount Everest or is a jet pilot, this is an uncommon cause. Acute hemorrhage, chronic anemia, carbon monoxide poisoning are common causes of this type of injury.
Chronic anemia occurs when there are persistent low red blood cells or hemoglobin.
These brain areas are important for the control of movement. This type of injury causes general, diffuse damage to the cerebral cortex and cerebellum. A brief summary of the types of symptoms and regions of the brain responsible are described below. A person may have difficulty processing incoming visual information. In this case, the area of the brain responsible for vision becomes disconnected from the rest of the brain.