Vertigo could be either from a peripheral (labyrinth and vestibular nerve) or a central disorder (central nervous system). Central vertigo is usually a result of an abnormal processing of the vestibular sensory input by the central nervous system. See the image below.
scatterhist(x,y) creates a 2-D scatter plot of the data in vectors x and y, and displays the marginal distributions of x and y as univariate histograms on the horizontal and vertical axes of the scatter plot, respectively. example.
Scatter Radiation. Primary - The beam of photons that exit the x-ray tube and hit the patient's body , the amount of photons lessens as they pass through matter. Remnant- the resulting beam that exits from the patient. SCATTER- photons that interact with the body's matter and travel in a different direction.