Dendrite

Dendrites were the projections of neurons that acted to conduct the electrochemical stimulation received from other neural cells to the cell body.

The transporter used by a race of alien abductors had the ability to replicate living matter, including the dendritic connections of the brain. 

In 2371, the Komar drained Chakotay's neural energy from his every dendrite and axon down to the synapses, leaving him brain-dead.