MAA thresholds are measured with 3-AFC staircases tracking the 70.7% point
Evidence
An adaptive three-interval, three-alternative forced-choice (3-AFC) discrimination procedure, coupled with a one-up-two-down staircase rule tracking the 70.7 %-correct point on the underlying psychometric function, was used. 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. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3052
Categorization
Category: Definitional Content
- DEFINE: Defines MAA measurement methodology via 3-AFC and the one-up-two-down staircase rule.
- XREF: Common psychoacoustic threshold-procedure vocabulary the reader will reuse across spatial hearing papers.
Related
- Adaptive staircase tracks the 70.7 percent correct point on the psychometric function (similarity 0.88)
- Adaptive staircase averaging of lower reversal points yields lower MAA thresholds than Levitt’s method. (similarity 0.87)
- Different staircase-analysis methods yield different minimum audible angle estimates (similarity 0.87)
- The 3-down one-up adaptive rule tracks 79.4 percent correct thresholds (similarity 0.86)
- One-up-two-down adaptive staircases can report lower thresholds than other estimation methods (similarity 0.86)
- Minimum Audible Angle is measured with a 3-AFC adaptive staircase task (similarity 0.86)
- Vertical-plane MAA discrimination is tested with three-interval forced choice (similarity 0.83)
- Two-down one-up adaptive tracking estimates the 70 percent correct threshold (similarity 0.81)
- Adaptive staircase procedures converge to thresholds by adjusting signal level per answer (similarity 0.80)
- One-up two-down adaptive procedures track the 70.7% point on the psychometric function (similarity 0.80)
- Three-down-one-up adaptive tracking efficiently estimates perceptual thresholds (similarity 0.80)
- Two-down one-up adaptive procedures estimate the 70 percent correct point (similarity 0.79)
- Different adaptive-threshold algorithms yield different threshold estimates (similarity 0.79)
- Adaptive threshold methods trade fast converging results against convergence risk (similarity 0.79)
- Threshold from up-down staircases is the averaged level at response reversals. (similarity 0.78)
Broader Connections
- Adaptive staircase procedures converge to thresholds by adjusting signal level per answer
#expands(0.85) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 927