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Auditory discrimination: the Konorski quality-location effect.

J C Neill, J M Harrison

Journal of the Experimental Analysis of Behavior

|July 1, 1987

Summary

The quality-location effect in auditory discrimination learning is not a general constraint. Rats learned sound quality but not location discriminations, unless naturalistic features like stimulus-response adjacency were present.

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Area of Science:

Auditory Perception
Animal Learning
Behavioral Neuroscience

Background:

Konorski's research suggested a quality-location effect in auditory discrimination, where quality discriminations were acquired faster than location discriminations.
This effect was interpreted as a general learning constraint. However, evolutionary frameworks proposed that naturalistic features influence acquisition rates.

Purpose of the Study:

To investigate if rats replicate Konorski's findings under similar experimental conditions.
To examine how manipulating naturalistic features (novelty, stimulus-response adjacency) affects the acquisition rates of sound quality versus location discriminations.

Main Methods:

Rats were trained using a go/no-go procedure with auditory stimuli.
Experimental conditions mimicked Konorski's setup, with variations including stimulus-response adjacency and pre-exposure to stimuli.
Acquisition rates for sound quality and location discriminations were measured.

Main Results:

Under conditions similar to Konorski's, rats acquired quality discriminations but not location discriminations.
When stimuli were presented via adjacent speakers (stimulus-response adjacency), location discrimination acquisition matched quality discrimination acquisition rates.
Pre-exposure to stimuli (S+ or S-) hindered or prevented quality discrimination acquisition.

Conclusions:

The quality-location effect observed by Konorski is primarily an artifact of specific experimental conditions, not a general learning constraint.
Naturalistic features, particularly stimulus-response adjacency, significantly impact the acquisition of auditory location discriminations.
Auditory learning is flexible and highly dependent on environmental and experimental context.

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