Figure 1.

Hybrid block/event-related experimental design with the distraction context manipulation paradigm. The distraction context manipulation paradigm included three different types of blocks: (1) The Pure block, which consisted of all distracter-absent trials (Abs); (2) The Mixed 20% Inc block, which consisted of 60% congruent distracter trials (Cong), 20% incongruent distracter trials (Inc), and 20% distracter-absent trials (Abs); and (3) The Mixed 60% Inc block, which consisted of 60% congruent distracter trials (Cong), 20% incongruent distracter trials (Inc), and 20% distracter-absent trials (Abs). Before the beginning of each block, a visual cue informed participants about the type of the starting block (Pure, 20% Inc, or 60% Inc). Within each block, trials were jittered with interstimulus intervals ranging from 1.5 to 9 s.