Definition
LGN models refer to mathematical models for the activity of neurons (relay cells and interneurons) in the lateral geniculate nucleus (LGN) of the thalamus. The LGN is positioned between the retina and the primary visual cortex in the early visual pathway in mammals.
Detailed Description
Overview of LGN Circuit
The lateral geniculate nucleus (LGN) acts as a gateway for visual signals to reach cortex. It receives driving input from retinal ganglion cells (RGCs) and modulatory input from the cortex, the thalamic reticular nucleus (TRN), and the brainstem (Sherman and Guillery 2001). The principal cells in the LGN, the thalamocortical relay cells (RCs), transmit visual information to cortex. In cat, they constitute about 75–80 % of the cells in the nucleus, while the remaining 20–25 % are intrageniculate interneurons (INs). The RCs receive synaptic inputs from a variety of sources: direct feedforward excitation from RGCs; indirect feedforward inhibitionvia the INs, which in...
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Einevoll, G.T., Halnes, G. (2014). Lateral Geniculate Nucleus (LGN) Models. In: Jaeger, D., Jung, R. (eds) Encyclopedia of Computational Neuroscience. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-7320-6_556-1
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DOI: https://doi.org/10.1007/978-1-4614-7320-6_556-1
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Lateral Geniculate Nucleus (LGN) Models- Published:
- 13 October 2018
DOI: https://doi.org/10.1007/978-1-4614-7320-6_556-2
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Lateral Geniculate Nucleus (LGN) Models- Published:
- 01 April 2014
DOI: https://doi.org/10.1007/978-1-4614-7320-6_556-1