Chapter

Neurons and Circuits Contributing to the Detection of Directional Motion across the Fly’s Retina

Nicholas J. Strausfeld

in Handbook of Brain Microcircuits

Published on behalf of Oxford University Press

Published in print August 2010 | ISBN: 9780195389883
Published online September 2012 | e-ISBN: 9780199965137 | DOI: http://dx.doi.org/10.1093/med/9780195389883.003.0040
Neurons and Circuits Contributing to the Detection of Directional Motion across the Fly’s Retina

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Studies of the insect compound eye, and its underlying circuitry, have a long and venerable tradition. Particularly the eyes of cyclorrhaphan flies—calliphorids, muscids, and drosophilids—have all offered insights into the physiological optics of the retina and the relationship of photoreceptors with neurons that comprise the first synaptic levels of the optic lobes: the lamina and medulla. What is striking about these levels is their many similarities with the external and internal plexiform layers of vertebrate retinae. This chapter discusses synaptic organization in the first visual neuropil (the lamina) of the house fly visual system, “common denominator” neurons of insect optic lobes, and a proposed circuit for computing directional motion.

Chapter.  4493 words.  Illustrated.

Subjects: Development of the Nervous System

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