SWEDENBORG consequently here followed the same line of thought as his predecessors. DESCARTES supposed that the nerves originated from the wall of the central ventricle of the brain and therefore located the images of sensory impressions, etc., there. VIEUSSENS and others thought that the nerves originate from the centrum ovale, and thus he placed the psychic activity there. And SWEDENBORG now proceeded in a similar manner when he attributed the psycho-sensory operations to the ›Cerebellula›. And what other parts of the cortex were better fitted to perform the demanding and ever-shifting psychical labour than the ›Cerebellula›, to which the life-giving powers of the blood were so plentifully admitted, and in which, according to the testimony of many, the highly subtile nervous fluid was created, whose office it was to communicate the rapid and shifting utterances of the soul’s life! SWEDENBORG’s predecessors had thought that the distinctions between the sensory impressions depended partly upon what kind of nerve was affected, and VIEUSSENS had located the images of perception and memory in the nerve-tubes in the centrum ovale, which had the finest caliber. What, then, was more natural than that SWEDENBORG should now locate these images in the ›Cerebellula› of the cortex? For what substance of the cortex was better fitted, a more suitable medium to comprehend and distinguish the innumerable shades of the impressions than these myriads of ›Cerebellula›—of different sizes, forms and consistency, etc., which were connected each with its own special nerve-fibril and so well distinguished from their neighbors! And at the same time they were connected with the other ›Cerebellula› into groups of different kinds, by which the psychical elaboration of the impressions was made possible. On similar grounds SWEDENBORG supposed that the psycho-motor labour was performed by the ›Cerebellula›, from which the nerves derived their origin. And here we may recall that VIEUSSENS had already _connected certain groups of nerves with certain bundles of medullary fibres_, and that MALPIGHI had shown how _bundles of fibres of the cerebral medulla corresponded to smaller and larger groups of cortical elements_, each one of which, hanging by its fibre, formed the different _gyres of the brain_. If we consider this, then we can easily understand how SWEDENBORG, with his view of the cortex, could divine the correspondence between the components of the convolutions and the muscles.