JN AJP: Regulatory, Integrative and Comparative Physiology
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Neurophysiol 77: 1487-1495, 1997;
0022-3077/97 $5.00
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Web of Science (13)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Juusola, M.
Right arrow Articles by French, A. S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Juusola, M.
Right arrow Articles by French, A. S.

The Journal of Neurophysiology Vol. 77 No. 3 March 1997, pp. 1487-1495
Copyright ©1997 The American Physiological Society

Visual Acuity for Moving Objects in First- and Second-Order Neurons of the Fly Compound Eye

Mikko Juusola and Andrew S. French

Department of Physiology and Biophysics, Dalhousie University, Halifax, Nova Scotia B3H 4H7, Canada; and Department of Physiology, University of Oulu, 90220 Oulu, Finland

Juusola, Mikko and Andrew S. French. Visual acuity for moving objects in first- and second-order neurons of the fly compound eye. J. Neurophysiol. 77: 1487-1495, 1997. The early stages of visual systems contain a variety of components that limit both the spatial resolution and the temporal resolution of vision. When an animal sees a moving object, or moves relative to its environment, both spatial and temporal factors contribute to its ability to resolve the movement. In the present work we have combined currently available knowledge about the early stages of fly vision (optical system, photoreceptors, and large monopolar cells) to predict the resolution of the first two cell layers to moving point objects. These calculations included recent measurements of nonlinear light responses. Because background light level has a strong effect on the temporal behavior of these early visual layers, we examined the effects of light level on motion resolution. We also studied the effect of position within the eye, which is known to affect the static resolution of vision. Our results indicate that responses in large monopolar cells to moving point objects are maximal at angular velocities of 100-200°/s. The resolution of point objects by both these early stages of the visual system is similar from stationary to an angular velocity of ~200°/s. Above this, resolution deteriorates approximately linearly with velocity.




This article has been cited by other articles:


Home page
 JGPHome page
J. van Kleef, A. C. James, and G. Stange
A Spatiotemporal White Noise Analysis of Photoreceptor Responses to UV and Green Light in the Dragonfly Median Ocellus
J. Gen. Physiol., October 31, 2005; 126(5): 481 - 497.
[Abstract] [Full Text] [PDF]

Home page
 J. Exp. Biol.Home page
N. Boeddeker and M. Egelhaaf
A single control system for smooth and saccade-like pursuit in blowflies
J. Exp. Biol., April 15, 2005; 208(8): 1563 - 1572.
[Abstract] [Full Text] [PDF]

Home page
 J. Exp. Biol.Home page
B. G. Burton and S. B. Laughlin
Neural images of pursuit targets in the photoreceptor arrays of male and female houseflies Musca domestica
J. Exp. Biol., November 15, 2003; 206(22): 3963 - 3977.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online