Bistable range as a function of number of hypercolumns.

Bistable range is the level of maximum and minimum recurrent excitatory conductance allowing for bistability, where 1 is the standard value; bistability ratio is upper boundary/lower boundary; activity state stability is the fraction of active states that are stable for 3 seconds or more in the middle of the bistable range; frequency range refers to the oscillation frequency of Vm in the active state in the bistable regime (faster oscillations for stronger excitation). The oscillation frequency of the ground state was ∼20 Hz in all simulations; mean firing frequency is the average firing frequency of foreground cells at the lower and upper boundary of the bistable regime.

双稳态区间（bistable range）指可实现双稳态的循环兴奋性电导的最大与最小水平，其中1为标准值；双稳态比率（bistability ratio）为上边界与下边界的比值；活动态稳定性（activity state stability）指双稳态区间中部持续3秒及以上的活跃状态所占比例；频率区间（frequency range）指双稳态条件下活动态中膜电位（Vm）的振荡频率（兴奋性越强，振荡频率越快）。所有仿真实验中，基态的振荡频率约为20 Hz；平均放电频率指双稳态区间上下边界处前台细胞的平均放电频率。