. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 188 B WEBB pattern, the robot, like the cricket (Doherty, 1985), could consistently choose one as the more attractive signal (Fig. 3). Integrating Sensory Systems One argument advanced in favor of (real) information processing solutions is that they are more amenable to scaling up to explain more complex, flexible behaviors such as the integration of different sensory sources to control behavior. From an engineering or designer point of view, this might indeed be the case. Whether it is true of biology is another question: p
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 188 B WEBB pattern, the robot, like the cricket (Doherty, 1985), could consistently choose one as the more attractive signal (Fig. 3). Integrating Sensory Systems One argument advanced in favor of (real) information processing solutions is that they are more amenable to scaling up to explain more complex, flexible behaviors such as the integration of different sensory sources to control behavior. From an engineering or designer point of view, this might indeed be the case. Whether it is true of biology is another question: perhaps biological systems can offer us alternative schemes—perhaps more specialized to the ani- mal's task niche, but on the other hand flexible and robust— for solving these kinds of problems. As a preliminary start- ing point for investigating these issues, I will describe some recent work done in collaboration with Reid Harrison (Webb and Harrison. 2000a,b) to look at the integration of the phonotaxis behavior on the robot with another funda- mental sensorimotor reflex, the optomotor response. Like many other insects, crickets will rotate in response to rotation of their visual surroundings. Normally this serves as a basic stabilization mechanism. The underlying sensor and neural circuitry for this response has been closely studied, particularly in the fly (Gotz, 1975; Reichardt and Poggio, 1976: Heisenberg and Wolf, 1988; Egelhaaf and Borst, 1993). It has been suggested that, in lit conditions, crickets will additively integrate their phonotaxis response and their optomotor response (Bohm et ai, 1991). which could improve the accuracy of their approach to sound (Weber el ai. 1981) by controlling for unintended course deviations. A sensor that embodies the hypothesized mechanism of the optomotor response has been built in analog VLSI (very large scale integration) hardware (Harrison and Koch, 1998). This is a single chip that contains photoreceptors, temporal filters, co
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
