Neurons
The Fasciculus cuneatus tract is composed of first-order neurons that synapse onto second-order neurons in the brain stem.
The second-order neurons decussate in the brainstem and continue on to the thalamus where the second-order neurons synapse onto third-order neurons.
The third-order neurons carry the received signals to the somatosensory cortex, where the signals, in the form of action potentials, are interpreted.
Read more about this topic: Cuneate Fasciculus