scholarly journals Radial asymmetries in population receptive field size and cortical magnification factor in early visual cortex

2017 ◽  
Vol 17 (10) ◽  
pp. 587
Author(s):  
Ben Harvey ◽  
Jan Brascamp ◽  
Sónia Ferreira ◽  
Miguel Castelo-Branco ◽  
Serge Dumoulin ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Receptive Field ◽  
Field Size ◽  
Magnification Factor ◽  
Receptive Field Size ◽  
Early Visual Cortex ◽  
Cortical Magnification ◽  
Cortical Magnification Factor

Radial asymmetries in population receptive field size and cortical magnification factor in early visual cortex

NeuroImage ◽  
2018 ◽  
Vol 167 ◽  
pp. 41-52 ◽  
Author(s):  
Maria Fatima Silva ◽  
Jan W. Brascamp ◽  
Sónia Ferreira ◽  
Miguel Castelo-Branco ◽  
Serge O. Dumoulin ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Receptive Field ◽  
Field Size ◽  
Magnification Factor ◽  
Receptive Field Size ◽  
Early Visual Cortex ◽  
Cortical Magnification ◽  
Cortical Magnification Factor

scholarly journals The development of population receptive field size in visual cortex during childhood

2016 ◽  
Vol 16 (12) ◽  
pp. 206
Author(s):  
Tessa Dekker ◽  
Samuel Schwarzkopf ◽  
Aisha McLean ◽  
Catherine Manning ◽  
John Greenwood ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Receptive Field ◽  
Field Size ◽  
Receptive Field Size

Dynamics and Formation of Self-Organizing Maps

1991 ◽  
Vol 3 (1) ◽  
pp. 54-66 ◽  
Author(s):  
Jun Zhang
Keyword(s):  
Transfer Functions ◽  
Mathematical Formulation ◽  
Field Size ◽  
Magnification Factor ◽  
Self Organizing Maps ◽  
Cortical Magnification ◽  
Binary Input ◽  
Cortical Magnification Factor ◽  
External Stimuli ◽  
Cortical Map

Amari (1983, 1989) proposed a mathematical formulation on the self-organization of synaptic efficacies and neural response fields under the influence of external stimuli. The dynamics as well as the equilibrium properties of the cortical map were obtained analytically for neurons with binary input-output transfer functions. Here we extend this approach to neurons with arbitrary sigmoidal transfer function. Under the assumption that both the intracortical connection and the stimulus-driven thalamic activity are well localized, we are able to derive expressions for the cortical magnification factor, the point-spread resolution, and the bandwidth resolution of the map. As a highlight, we show analytically that the receptive field size of a cortical neuron in the map is inversely proportional to the cortical magnification factor at that map location, the experimentally well-established rule of inverse magnification in retinotopic and somatotopic maps.

scholarly journals Spontaneous visual cortex activity predicts eccentricity and is related to receptive field size

2014 ◽  
Vol 14 (10) ◽  
pp. 587-587
Author(s):  
N. C. Benson ◽  
O. H. Butt ◽  
G. K. Aguirre
Keyword(s):  
Visual Cortex ◽  
Receptive Field ◽  
Field Size ◽  
Receptive Field Size
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