Complex sentence: Consequently, it is incorrect to describe dopamine itself as either excitatory or inhibitory: its effect on a target neuron depends on which types of receptors are present on the membrane of that neuron and on the internal responses of that neuron to cyclic AMP.
Split into simpler sentences: Consequently, it is incorrect to describe dopamine itself as either excitatory or inhibitory. Its effect on a target neuron depends on which types of receptors are present on the membrane of that neuron and on the internal responses of that neuron to cyclic AMP.