Figure 4:
![A trained excitatory-inhibitory RNN produced a limit cycle attractor in the steady state. (a) Output sequence shown as a heat map during tâ[0,10] s, where the shaded area indicated the steady state. (b) Heat maps of neural activity x(t) (top panel) and firing rate r(t) (bottom panel) of 100 neurons. (c) Illustration of two-dimensional phase diagrams at different subspaces of {x1(t),x2(t),x3(t),x7(t),x8(t)}. (d) Illustration of two-dimensional phase diagrams at the vector spaces spanned by the first four dominant principal components (PCs): {PC1(t),PC2(t),PC3(t),PC4(t)}.](https://mitp.silverchair-cdn.com/mitp/content_public/journal/neco/33/10/10.1162_neco_a_01418/2/neco_a_01418.figure.04.jpeg?Expires=1717070770&Signature=P9aITpCWpRhrauzvR~c72mXrpxwMCMe2mzUq9rl9ottRF9pw0Xwj4hwOhO5mftEXtdeQAjXzFbPYXCwIk~A7SyNQjHF27XiXQ8rGtpPXW0BY7IUr7yh5XNepi5WJ162D0X~Zpa8fgyQGlWyuI4H9xpSYqYOreZGy884aakpZGDU82gyBoGyXV7A~sFaRHa59clMOPaKmF7-4IOllOtMlrMDzwXKGyOiepbAjPE0n4VqKUN9wrdfFg-x8IAoZ~COuaOk7ADn3rSPqcGgMOqaPYrkIal4XB5H1kB5GoFjarY-GC-bgDhN33Qs5CC2YI9pzrju6rSlax0JpwN3zFtwLRA__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
A trained excitatory-inhibitory RNN produced a limit cycle attractor in the steady state. (a) Output sequence shown as a heat map during s, where the shaded area indicated the steady state. (b) Heat maps of neural activity (top panel) and firing rate (bottom panel) of 100 neurons. (c) Illustration of two-dimensional phase diagrams at different subspaces of â . (d) Illustration of two-dimensional phase diagrams at the vector spaces spanned by the first four dominant principal components (PCs): â .
