The fasciculus gracilis which carries sensory information from the lower trunk and legs, and the fasciculus cuneatus, which carries sensory information from the upper trunk and arms.
[Dr. Tan] There's a white matter highway between Broca's area and Wernicke's area called the arcuate fasciculus that can be communicates between the two.
Similarly, if you suddenly grab a vibrating cell phone, the sensation of vibration is carried from the nerves in the skin of your palm, via the fasciculus cuneatus, which is a collection of nerves all composed of 1st order neurons.