Rigorous and extended application of information theory to the afferent visual system of the cat |
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Authors: | Reinhard Eckhorn Bertram Pöpel |
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Affiliation: | 1. Department of Physiology, Freie Universität Berlin, Berlin, Germany
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Abstract: | - Intracellular recording were obtained from P-cells of the LGN of the cat. The impulse trains of a single presynaptic retinal ganglion cell and the postsynaptic P-cell were separated by band-pass-filtering and subsequent amplitude discrimination.
- The rates of information and transinformation for the visual channel from the eye to a ganglion cell and to the connected P-cell were calculated. Input signals to the channel were trains of light flashes of different rate, luminance and spatial distribution.
- Transinformation was calculated without restrictive assumptions for the code.
- The transient behaviour of the system in response to a flash was fully considered for information calculations. Additionally, it was ensured that the state of the (adaptive) channel was considered correctly.
- Information theory was applied in an extended way. The time courses of information transfer were calculated for various flash stimuli and compared with each other.
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