Complex sentence: It exerts transient effects in peripheral sympathetic neurons, but more permanent changes within neurons of the central nervous system, and can induce long-term depletion in cortical and spinal levels of noradrenaline.
Split into simpler sentences: It exerts transient effects in peripheral sympathetic neurons, but more permanent changes within neurons of the central nervous system. It can induce long-term depletion in cortical and spinal levels of noradrenaline.