Robust integration of motion information in the fly visual system revealed by single cell photoablation

Kalb J, Egelhaaf M, Kurtz R (2006)
JOURNAL OF NEUROSCIENCE 26(30): 7898-7906.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
Abstract / Bemerkung
In the brain, sensory information needs often to be read out from the ensemble activity of presynaptic neurons. In the most basic case, this may be accomplished by an individual postsynaptic neuron. In the visual system of the blowfly, an identified motion-sensitive spiking neuron is known to be postsynaptic to an ensemble of graded-potential presynaptic input elements. Both the presynaptic and postsynaptic neurons were shown previously to be capable of representing the velocity of preferred-direction motion reliably and linearly over a large frequency range of velocity fluctuations. Accordingly, the synaptic transfer properties of the connecting excitatory synapses between individual input elements and the postsynaptic neuron were shown to be linear over a similar range of presynaptic membrane potential fluctuations. It was not known, however, how the postsynaptic neuron integrates and reads out the presynaptic ensemble activity. We were able to compare the response properties of the integrating cell before and after eliminating individual presynaptic elements by a laser ablation technique. For most of the input elements, we found that their elimination strongly affected the activity of the postsynaptic neuron but did not degrade its performance to encode motion with constant and time-varying velocity. Our results suggest that the integration of individual synaptic inputs within the neural circuit operates with some redundancy. This feature might help the postsynaptic neuron to encode in a highly robust way the direction and the velocity of self-motion of the animal.
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JOURNAL OF NEUROSCIENCE
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26
Zeitschriftennummer
30
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7898-7906
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Kalb J, Egelhaaf M, Kurtz R. Robust integration of motion information in the fly visual system revealed by single cell photoablation. JOURNAL OF NEUROSCIENCE. 2006;26(30):7898-7906.
Kalb, J., Egelhaaf, M., & Kurtz, R. (2006). Robust integration of motion information in the fly visual system revealed by single cell photoablation. JOURNAL OF NEUROSCIENCE, 26(30), 7898-7906. doi:10.1523/JNEUROSCI.1327-06.2006
Kalb, J., Egelhaaf, M., and Kurtz, R. (2006). Robust integration of motion information in the fly visual system revealed by single cell photoablation. JOURNAL OF NEUROSCIENCE 26, 7898-7906.
Kalb, J., Egelhaaf, M., & Kurtz, R., 2006. Robust integration of motion information in the fly visual system revealed by single cell photoablation. JOURNAL OF NEUROSCIENCE, 26(30), p 7898-7906.
J. Kalb, M. Egelhaaf, and R. Kurtz, “Robust integration of motion information in the fly visual system revealed by single cell photoablation”, JOURNAL OF NEUROSCIENCE, vol. 26, 2006, pp. 7898-7906.
Kalb, J., Egelhaaf, M., Kurtz, R.: Robust integration of motion information in the fly visual system revealed by single cell photoablation. JOURNAL OF NEUROSCIENCE. 26, 7898-7906 (2006).
Kalb, Julia, Egelhaaf, Martin, and Kurtz, Rafael. “Robust integration of motion information in the fly visual system revealed by single cell photoablation”. JOURNAL OF NEUROSCIENCE 26.30 (2006): 7898-7906.
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11 Zitationen in Europe PMC

Daten bereitgestellt von Europe PubMed Central.

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Soloperto A, Bisio M, Palazzolo G, Chiappalone M, Bonifazi P, Difato F., Molecules 21(8), 2016
PMID: 27527143
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
Fly motion vision.
Borst A, Haag J, Reiff DF., Annu Rev Neurosci 33(), 2010
PMID: 20225934
Optimal motor control may mask sensory dynamics.
Carver SG, Kiemel T, Cowan NJ, Jeka JJ., Biol Cybern 101(1), 2009
PMID: 19408009

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