How Reliably Does a Neuron in the Visual Motion Pathway of fhe Fly Encode Behaviourally Relevant Information?

Warzecha A-K, Egelhaaf M (1997)
European Journal of Neuroscience 9(7): 1365-1374.

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Abstract
How reliably neurons convey information depends on the extent to which their activity is affected by stochastic processes which are omnipresent in the nervous system. The functional consequences of neuronal noise can only be assessed if the latter is related to the response components that are induced in a normal behavioural situation. In the present study the reliability of neural coding was investigated for an identified neuron in the pathway processing visual motion information of the fly (Lucilia cuprina). The stimuli used to investigate the neuronal performance were not exclusively defined by the experimenter. Instead, they were generated by the fly itself, i.e. by its own actions and reactions in a behavioural closed-loop experiment, and subsequently replayed to the animal while the activity of an identified motion-sensitive neuron was recorded. Although the time course of the neuronal responses is time-locked to the stimulus, individual response traces differ slightly from each other due to stochastic fluctuations in the timing and number of action potentials. Individual responses thus consist of a stimulus-induced and a stochastic response component. The stimulus-induced response component can be recovered most reliably from noisy neuronal signals if these are smoothed by intermediate-sized time windows (40-100 ms). At this time scale the best compromise is achieved between smoothing out the noise and maintaining the temporal resolution of the stimulus-induced response component. Consequently, in the visual motion pathway of the fly, behaviourally relevant motion stimuli can be resolved best at a time scale where the timing of individual spikes does not matter.
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Warzecha A-K, Egelhaaf M. How Reliably Does a Neuron in the Visual Motion Pathway of fhe Fly Encode Behaviourally Relevant Information? European Journal of Neuroscience. 1997;9(7):1365-1374.
Warzecha, A. - K., & Egelhaaf, M. (1997). How Reliably Does a Neuron in the Visual Motion Pathway of fhe Fly Encode Behaviourally Relevant Information? European Journal of Neuroscience, 9(7), 1365-1374.
Warzecha, A. - K., and Egelhaaf, M. (1997). How Reliably Does a Neuron in the Visual Motion Pathway of fhe Fly Encode Behaviourally Relevant Information? European Journal of Neuroscience 9, 1365-1374.
Warzecha, A.-K., & Egelhaaf, M., 1997. How Reliably Does a Neuron in the Visual Motion Pathway of fhe Fly Encode Behaviourally Relevant Information? European Journal of Neuroscience, 9(7), p 1365-1374.
A.-K. Warzecha and M. Egelhaaf, “How Reliably Does a Neuron in the Visual Motion Pathway of fhe Fly Encode Behaviourally Relevant Information?”, European Journal of Neuroscience, vol. 9, 1997, pp. 1365-1374.
Warzecha, A.-K., Egelhaaf, M.: How Reliably Does a Neuron in the Visual Motion Pathway of fhe Fly Encode Behaviourally Relevant Information? European Journal of Neuroscience. 9, 1365-1374 (1997).
Warzecha, Anne-Kathrin, and Egelhaaf, Martin. “How Reliably Does a Neuron in the Visual Motion Pathway of fhe Fly Encode Behaviourally Relevant Information?”. European Journal of Neuroscience 9.7 (1997): 1365-1374.
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