ABSTRACT
The process of external emission of the emotivity of the sensorium manifests itself externally, sometimes in a rapid and instantaneous manner, sometimes slowly, progressively, and after a greater or less period of time; this extrinsic revelation taking place either in the oral or graphic form, or in the shape of gestures more or less expressive, and varied attitudes. The sensibility is, therefore, always in agitation at the commencement of every voluntary act developed. It becomes erect, and excites the operations of judgment and reflexion. Henceforward the mental process has made one more step in the intricacies of the cortical substance. The external world, with all its incitements, enters into us by the channel of the senses, in the form of sensorial excitations; and the same external world, modified, and refracted by its intimate contact with the living tissues it has traversed, emerges from the organism, and is reflected outwards in the various manifestations of voluntary motor-power.
