And while no improvement was seen in other areas of cognition, the group scored approximately 14% higher in brain function than the placebo group did. The supplement contained 100 milligrams of wasabi extract, which is absorbed from the roots of the wasabiya jokovanocia plant, which is indigenous to Japan. Researchers believe the wasabi extract lowered the levels of oxidants and inflammations in the hippocampus, the part of the brain which is responsible for memory