Minimum Audible Angle is measured with a 3-AFC adaptive staircase task

Evidence

In each trial, three consecutive stimuli were presented. Two represented the reference incidence angle (0° or 120°) and one represented the variable angle (the ‘target’) determined by the adaptive procedure. The test subject’s task was to determine the diverging stimulus by pressing one of three buttons on a touch screen, on which the target stimulus was randomly assigned to one of the buttons in each trial. Following each response, the test subject was given visual feedback (about the correct answer) via the screen. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3052

Categorization

• DEFINE: Concretely defines the MAA experimental procedure used throughout this study.