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.
Isotropy is uniformity in all orientations; it is derived from the Greek isos (á¼´ÏÎ¿Ï, equal) and tropos (ÏÏÏÏÎ¿Ï, way). Precise definitions depend on the subject area. similar concept is homogeneity. A manifold can be homogeneous without being isotropic, but if it is inhomogeneous, it is necessarily anisotropic. Isotropic quadratic form. A quadratic form q is said to be isotropic if there is a non-zero vector v such that q(v) = 0.