The cerebellum receives paths from most, if not from all, of the afferent roots.
Examination of the cerebellum by the method of Wallerian degeneration has shown that a large number of spinal and bulbar nerve cells send branches up into it.
The seeming want of reaction of so much of the cerebellar structure under artificial stimulation, and the complex relay system revealed in the histology of the cerebellum, suggest that the impressions are elaborate.
In comparison with reptiles the cerebellum of birds shows high development.
Injuries of the cerebellum, if large, derange the power of executing movements, without producing any detectable derangement of sensation.
The hemispheres are rather elongated and subcylindrical, the olfactory lobes are large and project freely in front of the' hemispheres, and the greater part of the cerebellum is uncovered.
Not a hundredth part of the cerebellum has remained, and yet there has existed ability to stand, to walk, to handle and lift objects in a fairly normal way, without any trace of impairment of cutaneous or muscular sensitivity.
The damage to the cerebellum must, it would seem, occur abruptly or quickly in order to occasion marked derangement of function, and then the derangement falls on the execution of movements.