>Psychtoolbox>Quest

Psychtoolbox:Quest.

This Quest toolbox is distributed both on its own and as part of the Psychtoolbox.
web http://psych.nyu.edu/pelli/software.html#quest
web http://psychtoolbox.org/

INTRODUCTORY FUNCTION THAT WILL HELP YOU GET STARTED

QuestDemo - Demo script for Quest routines. Explanations and advice.
HIGH LEVEL FUNCTIONS THAT YOU’LL USE EVERY DAY
QuestCreate - Initialize Quest parameters.
QuestUpdate - Update Quest posterior pdf.
QuestMean - Mean of Quest posterior pdf. Recommended by Pelli(1987) and King-Smith et al.(1994).
QuestMode - Mode of Quest posterior pdf. Recommended by Watson & Pelli(1983).
QuestQuantile - Get Quest recommendation for next trial intensity. Recommended by Pelli(1987).
QuestSd - Standard deviation of Quest posterior pdf.
LOW LEVEL FUNCTIONS FOR SPECIAL PURPOSES
QuestBetaAnalysis - Estimate threshold and beta.
QuestP - Probability of a correct response, i.e. the psychometric function.
QuestPdf - pdf of threshold. (May need to be normalized.)
QuestRecompute - Recompute the psychometric function & pdf.
QuestSimulate - Simulate an observer with given Quest parameters.
QuestTrials - Sorted list of intensities and response frequencies.