Figure 3: Spontaneous events continue to exhibit widespread and distributed modular activity at P39–43.

a. Example timecourse of spontaneous activity in different cortical areas. Numbers indicate events shown in b and c. b. Spontaneous events show modular patterns of activation in all areas at P39–43. Left: raw event pattern showing clear modular patterns of activity in all areas at time (1) in (a). Right: Same event after applying a highpass spatial filter. c. Second representative event from same experiments as (b), at time (2) in (a). Scale bars (a): 0.1 ΔF/F, 20 sec; (b-c): 1 mm.