Neuronal processing of behaviourally generated optic flow: experiments and model simulations

Kern R, Lutterklas M, Petereit C, Lindemann JP, Egelhaaf M (2001)
Network: computation in neural systems 12(3): 351-369.

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Abstract
The stimuli traditionally used for analysing visual information processing are much simpler than what an animal sees when moving in its natural environment. Therefore, we analysed in a previous study the performance of an identified neuron in the optomotor system of the fly by using as visual stimuli image sequences that were experienced by the animal while walking in a structured environment. These electrophysiological experiments revealed that the fly visual system computes from behaviourally generated optic flow a rather unambiguous representation of the animal's self-motion. In contrast to conclusions based on simple stimuli, the directions of turns are represented by an interneuron, the HSE cell, quite independent of the spatial layout of the environment and its textural properties when the cell is stimulated with behaviourally generated optic flow. This conclusion is substantiated here by further experimental evidence. Moreover, it is shown that the largely unambiguous responses of the HSE cell to behaviourally generated optic flow can be replicated to a large extent by a network model of the fly's visual motion pathway. These results stress the significance of naturalistic stimuli for analysing what is encoded by neuronal circuits under natural operating conditions.
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Kern R, Lutterklas M, Petereit C, Lindemann JP, Egelhaaf M. Neuronal processing of behaviourally generated optic flow: experiments and model simulations. Network: computation in neural systems. 2001;12(3):351-369.
Kern, R., Lutterklas, M., Petereit, C., Lindemann, J. P., & Egelhaaf, M. (2001). Neuronal processing of behaviourally generated optic flow: experiments and model simulations. Network: computation in neural systems, 12(3), 351-369.
Kern, R., Lutterklas, M., Petereit, C., Lindemann, J. P., and Egelhaaf, M. (2001). Neuronal processing of behaviourally generated optic flow: experiments and model simulations. Network: computation in neural systems 12, 351-369.
Kern, R., et al., 2001. Neuronal processing of behaviourally generated optic flow: experiments and model simulations. Network: computation in neural systems, 12(3), p 351-369.
R. Kern, et al., “Neuronal processing of behaviourally generated optic flow: experiments and model simulations”, Network: computation in neural systems, vol. 12, 2001, pp. 351-369.
Kern, R., Lutterklas, M., Petereit, C., Lindemann, J.P., Egelhaaf, M.: Neuronal processing of behaviourally generated optic flow: experiments and model simulations. Network: computation in neural systems. 12, 351-369 (2001).
Kern, Roland, Lutterklas, Maik, Petereit, Christian, Lindemann, Jens Peter, and Egelhaaf, Martin. “Neuronal processing of behaviourally generated optic flow: experiments and model simulations”. Network: computation in neural systems 12.3 (2001): 351-369.
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