In order to be declared brain dead, a person needs to have no activity in either the brain or brain stem, at the base of the brain. Credit: Johan Swanepoel | Shutterstock View full size image.n Jahi's case, three doctors have concluded that she is brain-dead. However, the heart's intrinsic electrical system can keep the organ beating for a short time after a person becomes brain-dead â in fact, the heart can even beat outside the body, Greene-Chandos said.
Noun. 1. anisotropy-the property of being anisotropic; having a different value when measured in different directions. property-a basic or essential attribute shared by all members of a class; a study of the physical properties of atomic particles.
Many crystals are anisotropic to light (optical anisotropy), and exhibit properties such as birefringence. Crystal optics describes light propagation in these media. An axis of anisotropy is defined as the axis along which isotropy is broken (or an axis of symmetry, such as normal to crystalline layers).