A Cyclops and a Synotus.

here in the mediodorsal line. The fibres connecting cortex and thalamus run through this fusion. They form two groups: one group of fibres comes from the distally situated parts of the cortex and is connected with proximally situated parts of the thalamus. Another group springs from the more proximally situated parts of the cortex and goes at practically the same level in a left and a right bundle towards the thalamus. Both groups cross each other sagittally, so that the distal fibres end in the thalamus proximally to the other cortex fibres. There is also a crossing of fibres from the right and left hemispheres. This also applies to the corticothalamic fibres. These also cross in the median line. In the spinal cord there are no great deviations except the absence of the pyramidal tracts. It gives the impression of being small.