Figure 4.

Encoding of decision updates and decoding of decision weights. a, Neural encoding of DU_k in bilateral centroparietal signals, expressed as parameter estimate in z-units, in the focused (left) and divided (right) attention conditions. Conventions are the same as in Figure 3. b, Encoding scalp topographies at 300 and 550 ms following sample k for target (left) and neutral (right) streams. Topographies were flipped horizontally across the midline such that the corresponding stream appears in the left visual field. Conventions are the same as in Figure 3. c, Neural decoding of decision weight assigned to sample k in bilateral centroparietal signals following its onset, expressed as modulation strength in z-units, in the focused (left) and divided (right) attention conditions. Lighter curves indicate decoding strength for earlier samples 1–4, whereas darker curves indicate decoding strength for later samples 5–8. Conventions are the same as in a.