Illustrative results of the TICA basis functions (left) and the corresponding fitted Gabor functions (right) for the training sets corresponding to the visual angles of 0.64 deg (top), and 2 deg (bottom) sampled at fs = 25 cpd.

As can be seen in this example, non-Gabor functions (depicted as flat functions at the right panels) are rare (less than 5%) so fitted parameters are reliable. Qualitatively similar results were obtained for the other datasets.