1. Geffen LB, Jessell TM, Cuello AC and Iversen LL. (1976) Release of dopamine from dendrites in rat substantia nigra. Nature 260:258-60.

NeuronCompartmentPropertyConnectivityNotes
Substantia nigra pars compacta DA cellDistal apical dendriteDopamine-----DA is released from dendrites (Geffen LB et al, 1976 [rat]1 ). Korf et al, 1976; Cheramy et al 1981) by backpropagating impulse (Häusser M et al, 1995 [rat]2 ). acts on D2 autoreceptors (Lacey MG et al, 1987 [rat]3 ). 1990) causing hyperpolarization, and presynaptic GABAb receptors causing enhancement of synaptic inhibition (Cameron and Williams, 1993). (Reviewed in (Häusser M et al, 1995 [rat]2 ).
Substantia nigra pars compacta DA cellMiddle apical dendriteDopamine-----DA is released from dendrites (Geffen LB et al, 1976 [rat]1 ). Korf et al, 1976; Cheramy et al 1981) by backpropagating impulse (Häusser M et al, 1995 [rat]2 ). acts on D2 autoreceptors (Lacey MG et al, 1987 [rat]3 ). 1990) causing hyperpolarization, and presynaptic GABAb receptors causing enhancement of synaptic inhibition (Cameron and Williams, 1993). (Reviewed in (Häusser M et al, 1995 [rat]2 ).
Substantia nigra pars compacta DA cellProximal apical dendriteDopamine-----DA is released from dendrites (Geffen LB et al, 1976 [rat]1 ). Korf et al, 1976; Cheramy et al 1981) by backpropagating impulse (Häusser M et al, 1995 [rat]2 ). acts on D2 autoreceptors (Lacey MG et al, 1987 [rat]3 ). 1990) causing hyperpolarization, and presynaptic GABAb receptors causing enhancement of synaptic inhibition (Cameron and Williams, 1993). (Reviewed in (Häusser M et al, 1995 [rat]2 ).
Substantia nigra pars compacta DA cellMiddle apical dendriteI p,q.The action potential has a pronounced Ca component on its falling phase (Yung WH et al, 1991 [guinea pig]4 ). reviewed in (Häusser M et al, 1995 [rat]2 ). (Yung WH et al, 1991 [guinea pig]4 ). (Geffen LB et al, 1976 [rat]1 ). (Stuart GJ and Sakmann B, 1994 [rat]5 ).

Classical References: first publications on each compartmental property; search PubMed for complete list
1.  Geffen LB, Jessell TM, Cuello AC and Iversen LL. (1976) Release of dopamine from dendrites in rat substantia nigra. Nature 260:258-60.
2.  Häusser M, Stuart G, Racca C and Sakmann B. (1995) Axonal initiation and active dendritic propagation of action potentials in substantia nigra neurons. Neuron 15:637-47.
3.  Lacey MG, Mercuri NB and North RA. (1987) Dopamine acts on D2 receptors to increase potassium conductance in neurones of the rat substantia nigra zona compacta. J Physiol 392:397-416.
4.  Yung WH, Häusser MA and Jack JJ. (1991) Electrophysiology of dopaminergic and non-dopaminergic neurones of the guinea-pig substantia nigra pars compacta in vitro. J Physiol 436:643-67.
5.  Stuart GJ and Sakmann B. (1994) Active propagation of somatic action potentials into neocortical pyramidal cell dendrites. Nature 367:69-72 [Journal] .