# # rds - Random Dot Stereogram # stim_type dots # Stimulus type stim_samp 1000.0 # Stimulus sampling rate (images/s) stim_form 3d_b # Binocular stimulus stim_nrpt 1 # Number of repeats stim_mean_zero 1 st0 0.0 # start time (s) stn 1.0 # duration (s) cx 0.0 # Center of aperture along x-axis (deg) cy 0.0 # Center of aperture along y-axis (deg) ampl 1.0 # Amplitude of dot, or CONTRAST for BIPOLAR display bgval 0.0 # Background amplitude [0..1] maxlum 1.0 # Maximum luminance dotsize 1.0 # SD of Gaussian for dot (pixels) dotdens 25.0 # Dots per square degree per frame size 2.0 # Aperture size (degrees of visual angle) dwell 2 # Dwell time for each random dot pattern [1] (frames) aptype 0 # Aperture type (0-none, 1-circular, 2-square, 3-Gaussian) bipolar 1 # 0-unipolar, 1-bipolar [1] dotcorr 1 # 1-correlated, 0-uncorrelated, -1-anticorrelated [1] seed 1777 # randomization seed # # Define a patch to be shifted within the dot field # patch_type 1 # 1-rectangle patch_cx 0.0 # Center of patch (deg) patch_cy 0.0 # Center of patch (deg) patch_w 2.0 # Patch width (deg) patch_h 2.0 # Patch height (deg) patch_dx 0.0 # Displacement of patch (deg) patch_dy 0.0 # Displacement of patch (deg) # # These parameters are used only when dumping the stimulus for viewing # as a 3D data file. # stim_frame_xn 64 # x size (pixels) stim_frame_yn 64 # y size (pixels) stim_frame_tn 32 # t size (image frames) stim_frame_sscale 0.05 # spatial scale (deg/pix) stim_frame_tscale 0.002 # temporal scale (s/frame) stim_frame_binoc_dxn 16 # width of gray space between frames (pix) VAR_patch_dx -1.2 -1.0 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 1.0 1.2