Laminar organization of receptive field properties in the dorsal lateral geniculate nucleus of the tree shrew (Tupaiaglis belangeri)

1995 ◽  
Vol 358 (3) ◽  
pp. 401-413 ◽  
Author(s):  
Robert N. Holdefer ◽  
Thomas T. Norton
Keyword(s):  
Receptive Field ◽  
Lateral Geniculate Nucleus ◽  
Tree Shrew ◽  
Dorsal Lateral Geniculate Nucleus ◽  
Laminar Organization ◽  
Lateral Geniculate ◽  
Receptive Field Properties ◽  
Dorsal Lateral Geniculate

Mathematical models for the spatial receptive-field organization of nonlagged X-cells in dorsal lateral geniculate nucleus of cat

2000 ◽  
Vol 17 (6) ◽  
pp. 871-885 ◽  
Author(s):  
G.T. EINEVOLL ◽  
P. HEGGELUND
Keyword(s):  
Receptive Field ◽  
Ganglion Cell ◽  
Lateral Geniculate Nucleus ◽  
Discrete Model ◽  
Receptive Fields ◽  
Dorsal Lateral Geniculate Nucleus ◽  
Retinal Ganglion ◽  
Lateral Geniculate ◽  
X Cells ◽  
Dorsal Lateral Geniculate

Spatial receptive fields of relay cells in dorsal lateral geniculate nucleus (dLGN) have commonly been modeled as a difference of two Gaussian functions. We present alternative models for dLGN cells which take known physiological couplings between retina and dLGN and within dLGN into account. The models include excitatory input from a single retinal ganglion cell and feedforward inhibition via intrageniculate interneurons. Mathematical formulas describing the receptive field and response to circular spot stimuli are found both for models with a finite and an infinite number of ganglion-cell inputs to dLGN neurons. The advantage of these models compared to the common difference-of-Gaussians model is that they, in addition to providing mathematical descriptions of the receptive fields of dLGN neurons, also make explicit contributions from the geniculate circuit. Moreover, the model parameters have direct physiological relevance and can be manipulated and measured experimentally. The discrete model is applied to recently published data (Ruksenas et al., 2000) on response versus spot-diameter curves for dLGN cells and for the retinal input to the cell (S-potentials). The models are found to account well for the results for the X-cells in these experiments. Moreover, predictions from the discrete model regarding receptive-field sizes of interneurons, the amount of center-surround antagonism for interneurons compared to relay cells, and distance between neighboring retinal ganglion cells providing input to interneurons, are all compatible with data available in the literature.

scholarly journals Transformation of Receptive Field Properties from Lateral Geniculate Nucleus to Superficial V1 in the Tree Shrew

2013 ◽  
Vol 33 (28) ◽  
pp. 11494-11505 ◽  
Author(s):  
S. D. Van Hooser ◽  
A. Roy ◽  
H. J. Rhodes ◽  
J. H. Culp ◽  
D. Fitzpatrick
Keyword(s):  
Receptive Field ◽  
Lateral Geniculate Nucleus ◽  
Tree Shrew ◽  
Lateral Geniculate ◽  
Receptive Field Properties
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