III. A further minute analysis by electric stimulation of the so-called motor region (Facial area) of the cortex cerebri in the monkey (Macacus sinicus)
In continuation of our former minute analysis of the excitable region of the cerebral cortex, we have explored the so-called centres for the facial, lingual, and pharyngeal movements, or as we prefer to speak of them collectively, the facial area. This district, as will presently be seen, has been mapped out by numerous investigators, and its general limits are fairly well understood; but as we have found in the course of our investigations several points untouched, especially relating to the representation of the movements of the tongue, we think it better to arrange the facts previously determined in an historical introduction and to subjoin our own observations. In this, as in our second paper on the minuter representation of movements in the cerebral cortex, we have, in order to avoid discrepancies in the arrangement of the sulci, employed only the same variety of Monkey, viz., Macacus sinicus . In all we have performed twenty experiments. Historical Introduction. Fritsch and Hitzig, in the original memoir which forms the basis of all modern research on the subject, contented themselves with defining the foci of representation of movements of the face in the Carnivora.