Figure 25.

Phase diagram of the EN model for the joint mapping of visual space and orientation with a uniform orientation stimulus ensemble. (a) Regions of the η_r-σ/Λ-plane in which n-ECPs or rPWCs have minimal energy. (b) Pinwheel density time courses for four different simulations of Equations (3, 4) with r = 0.1, σ/Λ = 0.13 (η = 0.51), η_r = η (grey traces, individual realizations; red trace, mean value; black trace, realization shown in c). (c) OPMs (upper row), their power spectra (middle row), and RMs (lower row) in a simulation of Equations (3, 4); parameters as in b. (d) Pinwheel density time courses for four different simulations of Equations (3, 4) with r = 0.1, σ/Λ = 0.3 (η = 0.03), η_r = η (grey traces, individual realizations; red trace, mean value; black trace, realization shown in e). (e) OPMs (upper row), their power spectra (middle row), and RMs (lower row) in a simulation of Equations (3, 4); parameters as in d.