Click here to Download # # V4_HMax.moo # # This model was fit to cell a2501 from Pasupathy and Connor (2001). # mod_type vhf # higher visual filter model sscale 0.05 # degr/pix tscale 0.002 # sec/frame xn 256 # filter x size yn 256 # filter y size tn 1 # filter t size #--------------------------------------.--------------------------------------# # # # S1 # # # # Define six scales (tile sizes) for the Gabor units of Cadieu et al. # # # #-----------------------------------------------------------------------------# <s1> <channels> name ori nori 4 # Number of orientations nphase 2 # Number of phases (evenly distributed around circle) phase0 90.0 (deg) # Starting phase max_over_phase 1 # 1-max over phase, 0-keep separate phase channels [1] # # These factors will scale Gabor parameters based on Tile Size # gabor_sd_orth_f 9.0 # SD_orth = TileSize / f gabor_sd_para_f 6.0 # SD_para = TileSize / f gabor_sf_f 3.0 # SF = f / TileSize filter_norm_targ 0.0 # Target value for filter scaling: area of |f| # If 0.0, do not apply this normalization to the # S1 Gabor filters # # Normalization # norm_type 1 # 0-none, 1-local stim squared norm_eps 0.0001 # Added to denominator to avoid div by zero norm_mask_sd_f 2.5 # Normalization mask radius = f * max(SD_o,SD_p) # Eg. rad 15 for tile_w 36 (given ..sd_para_f =6) </channels> <tile> name 1 size 32 (pix) # Size of RF tile in pixels </tile> <tile> name 2 size 36 (pix) # Size of RF tile in pixels </tile> <tile> name 3 size 40 (pix) # Size of RF tile in pixels </tile> <tile> name 4 size 45 (pix) # Size of RF tile in pixels </tile> <tile> name 5 size 54 (pix) # Size of RF tile in pixels </tile> <tile> name 6 size 60 (pix) # Size of RF tile in pixels </tile> </s1> #--------------------------------------.--------------------------------------# # # # C1 # # # # Define the three C1 grids from Cadieu. # # # #-----------------------------------------------------------------------------# <c1> <grid> name c1_48 # This name is made up by us xn 4 # Number of units along the x-axis dx 24 (pix) # X-offset between units width 48 (pix) # Overall C1 RF size, determines how many S1 inputs tiles 1 2 # Names of S1 RF scales that are integrated </grid> <grid> name c1_60 xn 3 dx 30 width 60 tiles 3 4 </grid> <grid> name c1_80 xn 2 dx 40 width 80 tiles 5 6 </grid> </c1> #--------------------------------------.--------------------------------------# # # # C2 # # # # Define the C2 grid from Cadieu. # # # #-----------------------------------------------------------------------------# <c2> <grid> name c2_120 # This name is made up by us xn 3 # Number of units along the x-axis dx 30 (pix) # X-offset between units width 120 (pix) # Overall S2 RF size </grid> </c2> #--------------------------------------.--------------------------------------# # # # S2 # # # #-----------------------------------------------------------------------------# # # Define an S2 unit in terms of sigmoid parameters and C1 weights # # Sigmoid: goes from 0 to 's', centered at 'beta', slope 'alpha' # <s2> sigmoid_s 1.3775 sigmoid_alpha 3.2916 sigmoid_beta 6.1888 # # x goes from 0 to (xn-1) (specified in C1 grid) # # grid x y chn weight # ----- - - --- --------- c1_60_2_0_0 3.1114 # MSE_0: 0.0324 c1_60_2_2_2 2.6081 # MSE_1: 0.0324 c1_48_3_3_1 1.9013 # MSE_2: 0.0229 c1_80_1_1_1 1.9046 # MSE_3: 0.0165 c1_60_2_1_1 3.0912 # MSE_4: 0.0122 c1_80_0_0_3 1.2979 # MSE_5: 0.0106 c1_48_2_3_2 1.1651 # MSE_6: 0.0088 c1_48_2_0_2 1.6388 # MSE_7: 0.0077 c1_48_1_3_2 0.7952 # MSE_8: 0.0068 c1_60_1_1_2 1.0134 # MSE_9: 0.0063 c1_48_3_3_0 1.6256 # MSE_10: 0.0059 c1_48_2_1_3 0.3666 # MSE_11: 0.0054 </s2>