On the efferent relationship of the optic thalamus and Deiter's nucleus to the spinal cord, with special reference to the cerebellar influx theory (Hughlings Jackson) and the genesis of decerebrate rigidity (Sherrington)

In the following experiments it was determined to re-investigate the matter of the thalamo-spinal mechanism from the point of view of tracing the relations of the thalamus to the mesencephalon and hind-brain. Now, the thalamic grey centres are in association with the bulb and cord by the thalamo-bulbar and spinal tracts, placed on and around which are the rubro-spinal, tecto-spinal, Deiter-spinal, and the lateral cerebello pontine tracts. As the pyramidal fibres run through the mesencephalon it became necessary to exclude them in arranging the investigation.