Impact of visual motion adaptation on neural responses to objects and its dependence on the temporal characteristics of optic flow

Liang P, Kern R, Kurtz R, Egelhaaf M (2011)
Journal of Neurophysiology 105(4): 1825-1834.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
Abstract / Bemerkung
It is still unclear how sensory systems efficiently encode signals with statistics as experienced by animals in the real world and what role adaptation plays during normal behavior. Therefore, we studied the performance of visual motion-sensitive neurons of blowflies, the horizontal system neurons, with optic flow that was reconstructed from the head trajectories of semi-free-flying flies. To test how motion adaptation is affected by optic flow dynamics, we manipulated the seminatural optic flow by targeted modifications of the flight trajectories and assessed to what extent neuronal responses to an object located close to the flight trajectory depend on adaptation dynamics. For all types of adapting optic flow object-induced response increments were stronger in the adapted compared with the nonadapted state. Adaptation with optic flow characterized by the typical alternation between translational and rotational segments produced this effect but also adaptation with optic flow that lacked these distinguishing features and even pure rotation at a constant angular velocity. The enhancement of object-induced response increments had a direction-selective component because preferred-direction rotation and natural optic flow were more efficient adaptors than null-direction rotation. These results indicate that natural dynamics of optic flow is not a basic requirement to adapt neurons in a specific, presumably functionally beneficial way. Our findings are discussed in the light of adaptation mechanisms proposed on the basis of experiments previously done with conventional experimenter-defined stimuli.
Erscheinungsjahr
Zeitschriftentitel
Journal of Neurophysiology
Band
105
Zeitschriftennummer
4
Seite
1825-1834
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eISSN
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Liang P, Kern R, Kurtz R, Egelhaaf M. Impact of visual motion adaptation on neural responses to objects and its dependence on the temporal characteristics of optic flow. Journal of Neurophysiology. 2011;105(4):1825-1834.
Liang, P., Kern, R., Kurtz, R., & Egelhaaf, M. (2011). Impact of visual motion adaptation on neural responses to objects and its dependence on the temporal characteristics of optic flow. Journal of Neurophysiology, 105(4), 1825-1834. doi:10.1152/jn.00359.2010
Liang, P., Kern, R., Kurtz, R., and Egelhaaf, M. (2011). Impact of visual motion adaptation on neural responses to objects and its dependence on the temporal characteristics of optic flow. Journal of Neurophysiology 105, 1825-1834.
Liang, P., et al., 2011. Impact of visual motion adaptation on neural responses to objects and its dependence on the temporal characteristics of optic flow. Journal of Neurophysiology, 105(4), p 1825-1834.
P. Liang, et al., “Impact of visual motion adaptation on neural responses to objects and its dependence on the temporal characteristics of optic flow”, Journal of Neurophysiology, vol. 105, 2011, pp. 1825-1834.
Liang, P., Kern, R., Kurtz, R., Egelhaaf, M.: Impact of visual motion adaptation on neural responses to objects and its dependence on the temporal characteristics of optic flow. Journal of Neurophysiology. 105, 1825-1834 (2011).
Liang, Pei, Kern, Roland, Kurtz, Rafael, and Egelhaaf, Martin. “Impact of visual motion adaptation on neural responses to objects and its dependence on the temporal characteristics of optic flow”. Journal of Neurophysiology 105.4 (2011): 1825-1834.
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2012-07-26T19:37:59Z

10 Zitationen in Europe PMC

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Local motion adaptation enhances the representation of spatial structure at EMD arrays.
Li J, Lindemann JP, Egelhaaf M., PLoS Comput Biol 13(12), 2017
PMID: 29281631
Enhancement of prominent texture cues in fly optic flow processing.
Kurtz R., Front Neural Circuits 6(), 2012
PMID: 23112763
Spatial vision in insects is facilitated by shaping the dynamics of visual input through behavioral action.
Egelhaaf M, Boeddeker N, Kern R, Kurtz R, Lindemann JP., Front Neural Circuits 6(), 2012
PMID: 23269913

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