Not every relation is a function. But every function is a relation. Function is just a part of relation.
The cubic function.
Range
A formula or graph are two ways to describe a math function. How a math function is described depends on the domain of the function or the complexity of the function.
The Mandelbrot graph is generated iteratively and so is a function of a function of a function ... and in that sense it is a composite function.
Degeneration of neurons especially in substantia nigra of both sides might cause Parkinson's disease.
substantia nigra
The substantia nigra are located in an area of the brain around the lateral ventricles known as the basal ganglia. This is an addition to the above-mentioned answer. To be more specific, substantia nigra lies in the midbrain, dorsal to the cerebral peduncles.
substantia nigra
It may slow degeneration of the substantia nigra
black substance
substantia nigra
One of the movement control centers of the brain
The substantia nigra is best known for its production of dopamine, a major neurotransimitter used in certain cell populations in the brain. The most common link with respects to pathology, is in Parkinson's disease, where these cell populations (in the substantia nigra) die off, and the brain has very low amounts of dopamine to work with. Sorry I couldn't be more specific to the alzheimer's respects, but I'm just giving what I know. Take care.
these two structures take part in complex control loops that govern certain aspects of movement and, when substantia nigra cells degenerate, these loops are disrupted and movements become unregulated, producing the symptoms of Parkinson's disease.
No, parkinson's affects the dopaminergic neurons of the substantia nigra, which is part of the mid-brain.
P. H. M. F. van Domburg has written: 'The human substantia nigra and ventral tegmental area' -- subject(s): Aging, Anatomy & histology, Basal Ganglia Diseases, Mesencephalic tegmentum, Pathology, Substantia Nigra, Tegmentum Mesencepahli