ABSTRACT
THE sense organs are not only receivers of stimuli, but, in virtue of the feeling produced, are perceivers of stimuli. When an animal has its attention directed to an object, it is said to perceive that object. It Is aware of the object through the feelings the object produces. In a vague way, it may " sense " other things and conditions in its environment, but there is one and only one focus to its attention. While the sensed objects which He out on the margin of consciousness, might affect conduct in an indirect fashion, it is the concentrated and combined impulses that enter into a perception which regulate the animal's activities and determine its course.
