def default_parameters():
    # receptive field parameters
    p = ParameterSpace({})
    p.Ac = 1.
    p.As = 1. / 3.
    p.K1 = 1.05
    p.K2 = 0.7
    p.c1 = 0.14
    p.c2 = 0.12
    p.n1 = 7.
    p.n2 = 8.
    p.t1 = -6.  # ms
    p.t2 = -6.  # ms
    p.td = 6.0  # time differece between ON-OFF
    p.sigma_c = 0.3  #0.4 # Allen 2006 # sigma of center gauss degree
    p.sigma_s = 1.5  #p.sigma_c*1.5+0.4 # Allen 2006 # sigma of surround gauss degree

    # Kernel dims
    # temporal
    p.size = 10.  # degree
    p.degree_per_pixel = 0.1133
    # spatial
    p.dt = 1.0  # ms
    p.duration = 200.  # ms
    return p
def default_parameters():
    # receptive field parameters
    p = ParameterSpace({})
    p.Ac = 1.
    p.As = 1./3.
    p.K1 = 1.05
    p.K2 = 0.7
    p.c1 = 0.14
    p.c2 = 0.12
    p.n1 = 7.
    p.n2 = 8.
    p.t1 = -6. # ms
    p.t2 = -6. # ms
    p.td = 6.0 # time differece between ON-OFF
    p.sigma_c = 0.3#0.4 # Allen 2006 # sigma of center gauss degree
    p.sigma_s = 1.5#p.sigma_c*1.5+0.4 # Allen 2006 # sigma of surround gauss degree

# Kernel dims
    # temporal
    p.size = 10. # degree
    p.degree_per_pixel = 0.1133
    # spatial
    p.dt = 1.0 # ms
    p.duration = 200. # ms
    return p