Suppression of a Locust Visual Interneurone (DCMD) During Defensive Kicking
نویسندگان
چکیده
منابع مشابه
Ocellar Excitation of the Dcmd: an Identified Locust Interneurone
Locusts, like most other insects, possess three ocelli, or simple eyes, in addition to two large compound eyes. Focussed images are not formed on the retinae of the ocelli (Parry, 1947; Wilson, 1978 a) and ocellar neurones are influenced by changes in light intensity occurring over wide areas of the visual field. Some of the second-order neurones which extend from the retina of each ocellus to ...
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The locust descending contralateral motion detector (DCMD) responds to movements anywhere within a wide visual field, but responds most strongly to the images of approaching objects. It has been claimed that the response peaks before the end of an approach movement, providing a signal that anticipates collision. However, we find that when the locust eye is presented with appropriate computer-ge...
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Rind, F. Claire and Peter J. Simmons. Signaling of object ap16 mW/cm, and dark shapes of 4 mW/cm in intensity moved against it. Stimuli were controlled with a Cambridge Research proach by the DCMD neuron of the locust. J. Neurophysiol. 77: 1029–1033, 1997. The locust descending contralateral motion deSystems VSG2/1 board and RG2 raster generator, providing a refresh rate of 200 Hz, at a resolut...
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In this paper, we present an analog VLSI (aVLSI) architecture that implements a functional model of the locust descending contralateral movement detector (DCMD) neuron, based on recently published results. We describe its architecture and analog circuits that implement its critical computational modules. We also provide an analytical closed-form solution for some of the circuits proposed and ve...
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In preparation for jumping and kicking, a locust slowly generates large forces in the femoral muscles of its hind legs and stores them in elastic distortions of the tendons and femoral cuticle. At the femoro-tibial joints, the semi-lunar processes are bent, the cuticle of the dorsal distal femur is crumpled, and the femur is expanded in a mediolateral direction. We have analysed whether these d...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 1983
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.104.1.203