Receptive Fields in the primary visual pathway applied to images.
Use IPython Notebook to open the .ipynb file or use receptiveFields.py.
* Gaussian
* Mexican hat
* Gabor
* Quadrature Pairs (edge energy)
using the scipy.signal function convolve
Mexican hat (Difference of Gaussians) receptive fields are found in retinal ganglion cells and the LGN. They vary with respect to their polarity (on-center vs. off-center). Orientation specific receptive fields (Gabor filters) are found throughout the cortex. Complex cells react equally well to step edges and lines.
Introduction to Computational Neuroscience, Hanspeter Mallot, University of Tübingen
To the extent possible under law,
Jonas Nick
has waived all copyright and related or neighboring rights to
Visualizing Receptive Fields.
This work is published from:
Germany.