Beta stage

Brain function at this stage stay between 14 to 30 rotation per second. Known as a conscious mind. At this stage human was at focusing thinking when resolve a problem. Brain were thinking on the concentration state. Scientist, Sir Francis Crick believes frequency here is the key into action human of consciousness. But when the brain stayed at this stage, seldom happened of creative solution. Brain needed to be in alpha level position for solving problems. This stage also known as stressed level, embittered.