Brain signals. Animation of neural signals ascending the spinal cord bringing sensory information to different regions of the brain. The human brain and skull are seen from the side, including the upper part of the spinal cord encased by the cervical vertebrae of the neck (lower right). The outer folds of the brain's cerebral cortex are shown, along with the cerebellum (centre right) at the rear base of the brain. At centre left and lower left are the bones of the face, including the eye sockets and jaw and cheek bones.