English to Greek Medical Medical (general) ψυχολογία

Όπως εδώ:

http://en.wikipedia.org/wiki/Absolute_threshold_of_hearing

There are several different psychophysical methods which can be used for the measurement of absolute threshold. These methods may vary in many ways; however, certain aspects are identical. Firstly, the stimulus is defined, and the manner by which the person should respond is clearly specified. The sound is then presented to the listener and the level of the stimulus is manipulated in a predetermined pattern. The absolute threshold is defined statistically, often as an average of all obtained hearing thresholds.[3]

Some procedures use a series of trials, with each trial using the ‘single-interval “yes”/”no” paradigm’. This means that sound may be present or absent in the single interval, and the listener has to say whether he thought the stimulus was there. When the interval does not contain a stimulus, it is called a "catch trial".