Polarization by Use of a Polaroid Filter. The most common method of polarization involves the use of a Polaroid filter. Polaroid filters are made of a special material that is capable of blocking one of the two planes of vibration of an electromagnetic wave.
The lateral ventricles are part of the ventricular system of the brain. Both cerebral hemispheres contain a lateral ventricle. The lateral ventricles are the largest of the ventricles.
Periventricular white matter refers to white. matter that is immediately to the side of the. two lateral (side) ventricles of the brain. This. is shown in the second picture below. The. lateral ventricles are two curved openings. (shaped like a horseshoe) located deep.