Deviant-tone-pattern detection trials present four six-tone patterns with one interval altered.

Evidence

Each trial consisted of four patterns separated by 700 milliseconds (ms) silence, and each pattern consisted of six tones. Three of the patterns had the same sequence of pitch intervals (standard pattern); the last pitch interval of either the final or the penultimate pattern of the trial deviated from the other three. — Dijk, Pim van, Physiology, Psychoacoustics and…, 5290

Categorization

• DEFINE: Defines the oddball paradigm: four tone patterns of six tones, one deviant interval in the last or penultimate.