Visualization of multiple influences on ocellar flight control in giant honeybees with the data-mining tool Viscovery SOMine.
Viscovery SOMine is a software tool for advanced analysis and monitoring of numerical data sets. It was developed for professional use in business, industry, and science and to support dependency analysis, deviation detection, unsupervised clustering, nonlinear regression, data association, pattern recognition, and animated monitoring. Based on the concept of self-organizing maps (SOMs), it employs a robust variant of unsupervised neural networks--namely, Kohonen's Batch-SOM, which is further enhanced with a new scaling technique for speeding up the learning process. This tool provides a powerful means by which to analyze complex data sets without prior statistical knowledge. The data representation contained in the trained SOM is systematically converted to be used in a spectrum of visualization techniques, such as evaluating dependencies between components, investigating geometric properties of the data distribution, searching for clusters, or monitoring new data. We have used this software tool to analyze and visualize multiple influences of the ocellar system on free-flight behavior in giant honeybees. Occlusion of ocelli will affect orienting reactivities in relation to flight target, level of disturbance, and position of the bee in the flight chamber; it will induce phototaxis and make orienting imprecise and dependent on motivational settings. Ocelli permit the adjustment of orienting strategies to environmental demands by enforcing abilities such as centering or flight kinetics and by providing independent control of posture and flight course.
Kastberger
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Department of Neurobiology, Karl-Franzens University, Graz, Austria. gerald.kastberger@kfunigraz.ac.at
Kranner
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D000818:Animals; D001516:Bees / Q000502:physiology; D001330:Electronic Data Processing; D005426:Flight, Animal / Q000502:physiology*; D006801:Humans; D009415:Nerve Net / Q000502:physiology*; D012984:Software; D014785:Vision, Ocular / Q000502:physiology*