Fig. 4. Color-coded CFAE-CL map recorded by the mini catheter (1.0 mm tip, inter-electrode distance 2.5 mm) at different catheter directions (θ=0° and 90°).(.

(A) CFAE-CL map at catheter direction of θ=0°. (B) CFAE-CL map at catheter direction of θ=90°. One-second recordings of virtual bipolar electrograms at the tip of the distal electrode are presented.