Figure 1.

Schematic of sequence design showing sequences with deviants presented at a probability of 0.125 (1/8), two oddball sequences are presented in a flip-flop design (A), controlling for the physical characteristics of the stimuli. Differential adaptation can be controlled for through the use of a deviant-alone control (B), which presents the deviant at the same temporal rate as it is presented in the oddball sequence, but without the intervening standards; or the many-standards control (C), which presents several stimuli (including the deviant) at the same temporal rate as the oddball sequences.