text: It has been a long time from my neurobiology days.\n\nAxons do not modify or change a signal and often propagate a signal by saltatory conduction with the use of myelin and active ion channels. \n\nDendrites modify the relative importance of signals by the integration of various imputs. This is accomplished in the simpliest way by a passive electrical system. The further out the input is in the dentritic tree the less it contributes.