13 Pages


THE excitation of a receptive apparatus when transmitted to the cortical area produces there a specific associative reaction, ensuring identification and the corresponding sensory perception. Sometimes what reaches this association area is the after-effect of an excitation in direct relation with the thalamus and the affective area: as happens in the case of certain' pains,' such as burning. Or the specific excitation may be accompanied by an awareness of the affective reverberation (pricking). The organic impressions of ccensesthesia, pleasures and pains especially, are specific excitations of the affective centres, and penetrate into associative , knowledge' only through their means.