Phasic Transmitter Release from Tonic Neurons

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Phasic Transmitter Release from Tonic Neurons Mary J Palmer, Henrique von Gersdorff Neuron Volume 35, Issue 4, Pages 600-602 (August 2002) DOI: 10.1016/S0896-6273(02)00833-4

Figure 1 The Locust Ocellus Circuitry The ocellus photoreceptors depolarize to light stimuli and form inhibitory synaptic contacts that release histamine onto three distinct “L” neurons (L1-3). These neurons have long (1500 μm) and thick (15 μm) axons, and they make reciprocal inhibitory connections with each other at the terminal arbors where acetylcholine is released in a phasic manner. In addition, L1-3 neurons form tonic excitatory cholinergic contacts with DN neurons (descending interneurons), which also receive excitatory synaptic input from wind-sensitive hairs on the head. The ocellus visual system is thought to play a role in stabilizing flight. Neuron 2002 35, 600-602DOI: (10.1016/S0896-6273(02)00833-4)