McCann, G. D. and Dill, J. C. (1969) Fundamental Properties of Intensity, Form, and Motion Perception in the Visual Nervous Systems of Calliphora phaenicia and Musca domestica. Journal of General Physiology, 53 (4). pp. 385-413. ISSN 0022-1295. http://resolver.caltech.edu/CaltechAUTHORS:20120830-122619279
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Several classes of interneurons in the optic lobes and brain of the insects, Musca domestica and Calliphora phaenicia, have been studied in detail. Visual stimuli have been categorized on the basis of the properties of intensity, form, and motion. Response characteristics of the classes of neural units are described with respect to these three classes of visual stimuli. While those units that detect motion in select directions have a tonic response, form detection units have a phasic response only. Through correlation of the responses of these classes with visual stimuli, it is shown that these units integrate the responses of other units which have very small visual fields. The small-field units are presumed to integrate the output of a small group of adjacent retinula cells and to respond differentially to intensity, form, and motion. It is shown that the response of both form and motion detection units is independent of the direction of pattern intensity gradation. As a consequence of this independence, it is further shown that failure to detect motion properly must start at a spatial wavelength four times the effective sampling station spacing rather than twice as has been predicted previously.
|Additional Information:||© 1969 Rockefeller University Press. Submitted 24 June 1968; Published April 1, 1969. We wish to thank Mrs. Gerda Verkaik and Mrs. Maggie Clay for their expert assistance in making preparations and performing the histological work. We also wish to thank D. K. Aranovich, B. M. Ellert, and A. W. Broers for designing and constructing some of the equipment used in this work. This research was supported by the National Institutes of Health, United States Public Health Service Grant NB 03627.|
|Official Citation:||Fundamental Properties of Intensity, Form, and Motion Perception in the Visual Nervous Systems of Calliphora phaenicia and Musca domestica G. D. McCann and J. C. Dill J Gen Physiol 1969 53:385-413.|
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|Deposited On:||30 Aug 2012 20:22|
|Last Modified:||26 Dec 2012 16:05|
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