Download PDF by Donald R. Griffin (auth.), René-Guy Busnel, James F. Fish: Animal Sonar Systems

By Donald R. Griffin (auth.), René-Guy Busnel, James F. Fish (eds.)

Thirteen years have passed by because the first foreign meet­ ing on Animal Sonar platforms was once held in Frascati, Italy, in 1966. when you consider that that point, nearly 900 papers were released on its subject matter. the 1st symposium was once very important because it used to be the place to begin for brand spanking new study strains whose aim used to be to layout and advance technological structures with houses imminent optimum organic structures. there were hugely major advancements in view that then in all domain names concerning organic sonar structures and of their appli­ cations to the engineering box. The time had for that reason come for a multidisciplinary integration of the knowledge accumulated, not just at the evolution of platforms utilized in animal echolocation, yet on platforms idea, habit and neurobiology, signal-to-noise ratio, covering, sign processing, and measures saw in yes species opposed to animal sonar platforms. glossy electronics expertise and structures idea that have been built basically for the reason that 1974 now let designing refined sonar and radar platforms utilising rules derived from organic platforms. on the time of the Frascati assembly, built-in circuits and technol­ ogies exploiting desktop technology weren't good adequate built to yield merits now attainable via use of real-time research, resulting in, between different issues, a definition of objective temporal char­ acteristics, as organic sonar structures may be able to do. All of those new technical advancements necessitate shut co­ operation among engineers and biologists in the framework of latest experiments that have been designed, quite some time past 5 years.

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The vertical position of the bronze targets gradually approached that of the steel targets until eventually all targets were presented in the same position. In general, this type of stimulus fading procedure minimizes errors (see below) during the acquisition phase of a learned discrimintation. Figure 4 shows the acquisition of the discrimination between steel and bronze targets regardless of size. Because a fading procedure was used, the number of errors was minimized even when R. J. SCHUSTERMAN 24 100 HOLLOW STEEL-··A"" REPORT VS HOLLOW BRONZE- "B"" REPORT 11: ..

Target detectability must be assured if reinforcement contingencies are to produce the desired results of establishing and maintaining stable responding. The spacing of target parameter values around threshold and the sequence of presentation are also crucial considerations in training and maintaining stimulus control. Once established. the degree of stimulus control by an echo complex can be tested or probed by presenting novel targets and finding out the degree to which targets contain similar echo configurations (Hammer.

15:135-193. Pierce, G. , 1948, "The Songs of Insects," Harvard University Press, Cambridge, Mass. Pierce, G. , and Griffin, D. , 1938, Experimental determination of supersonic notes emitted by bats, 1. Mamma10gy, 19:454-455. , 1966, Ultrasonic production and its reception in some neotropica1 Tettigoniidae, J. , 12:1039-1050. G. J. U. Schnitzler - Underwater Behavioral methodology in echolocation by marine maIlmlals. J. Schusterman Detection range and range resolution of echo locating bottlenose porpoise.

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