Physiology and Morphology of a Direction-Selective STMD Neuron Class Selected for Detailed Analysis (STMD 2)

<div><p>(A) A receptive field map of local preferred direction. The neuron responds optimally to motion down and away from the midline. The length of the arrows indicates the strength of the response, and its angle the preferred direction of motion (see<a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.0040054#s4" target="_blank">Materials and Methods</a>).</p> <p>(B) A<i>z-</i>axis projection of the morphology of STMD 2 after Lucifer yellow staining. A compact group of dendrites in the dorsal lobula plate correspond closely to the retinotopic location of the physiological receptive field and are presumably inputs. Outputs are located in the lateral subesophageal ganglion.</p> <p>Lo, lobula; Me, medulla; O, esophageal foramen.</p> <p>(C) Raw responses to target stimuli drifted against bright backgrounds as in<a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.0040054#pbio-0040054-g001" target="_blank">Figure 1</a>.</p>