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Data
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Contrast invariance by LGN synaptic depression (Banitt et al. 2007)
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"Simple cells in layer 4 of the primary visual cortex of the cat show contrast-invariant orientation tuning, in which the amplitude of the
peak response is proportional to the stimulus contrast but the width of the tuning curve hardly changes with contrast.
This study uses a
detailed model of spiny stellate cells (SSCs) from cat area 17 to explain this property.
The model integrates our experimental data,
including morphological and intrinsic membrane properties and the number and spatial distribution of four major synaptic input
sources of the SSC: the dorsal lateral geniculate nucleus (dLGN) and three cortical sources.
...
The model response is in close
agreement with experimental results, in terms of both output spikes and membrane voltage (amplitude and fluctuations), with reasonable
exceptions given that recurrent connections were not incorporated."
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Neuron or other electrically excitable cell Show
Other
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Banitt Y, Martin KA, Segev I (2007) Show
Other
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Anderson JC, Douglas RJ, Martin KA, Nelson JC (1994) Show
Other
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Anderson JC, Douglas RJ, Martin KA, Nelson JC (1994) Show
Other
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Banitt Y, Martin KA, Segev I (2005) Show
Other
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