In a healthy person, impulses from receptors of the internal organs, or interoreceptors, in contrast to the pulse of the senses, located on the outer surface of the body, not the basis of his experiences and formation of consciousness. Only the portion of centripetal impulses from sensory organs located on the outer surface of the body that reaches the cerebral hemispheres of the brain, causing them nervous process a certain intensity and complexity, perceived by the person in the form of sensations. The relationship of the human psyche and the higher nervous activity. The psyche has a reflex nature, and is the result of a particularly complex activity of the cerebral hemispheres. The human psyche is a reflection of his usual form of brain objects and phenomena of the material world, and in some cases, such as violations of the functions and internal diseases, and physical processes inside the body.
Knowledge begins with experience, which is the simplest mental process, the specific subjective way the external objective world. Feelings arise with the direct action of various forms of motion on the receptors, the senses. From sensations in the human brain is a transition to the formation of concepts, ideas as abstract, form as well as mental images do not contain matter reflected objects. But because mental images are the properties of the material processes of the human brain, they can influence physiological processes occurring in his body. Unlike animals, the brain, which reflects only the physical phenomena and objects of nature, the human mind reflects his social life. The human psyche formed in his social work has a social and historical origins. Therefore, and reflect the nature of man is very different from its reflection of the animals..