Ventricles

Topography

S ections

Spinal cord

Pathways

349

Pathways of the spinal cord

Fig. 614

Pathways for unconscious deep sensibility.

Ascending pathways

Pathway for unconscious deep sensibility

(Unconscious, but precise spatial differentiation as a prerequisite for movement coordination by the cerebellum]

Via the anterior cerebellar tract

1

.

neuron [uncrossed]

From receptors (proprioceptors] in muscles, tendons, and the connective tissue to the nuclei of the intermediate zone

and the anterior column (perikarya in the spinal ganglia).

2

.

neuron (crossed]

From the anterior horn within the anterior spinocerebellar tract of the anterolateral tract to the cerebellum via the

superior cerebellar peduncle (perikarya in the intermediate zone and the anterior horn).

Via the posterior cerebellar tract

1

.

neuron (uncrossed]

From end organs (proprioceptors] in muscles, tendons, and the connective tissue to the nuclei of the posterior column

and the thoracic nucleus (perikarya in the spinal ganglia).

2

.

neuron (uncrossed)

From the posterior horn and the thoracic nucleus within the posterior spinocerebellar tract of the lateral tract to

the cerebellum via the inferior cerebellar peduncle (perikarya in the thoracic nucleus and at the base of the posterior

column).