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Speech-Sounds Perception Test: analysis of error types in normal and diffusely brain-damaged patients
R A Charter1, R L Dutra, M N Lopez
1Psychology Service (116B), Department of Veterans Affairs Medical Center, Long Beach, California 90822, USA.
Perceptual and Motor Skills
|June 1, 1997
Summary
Brain-damaged patients made more terminal and both speech sound errors than controls. However, analyzing error types did not improve classification accuracy over just using the total score for speech sound perception.
Area of Science:
- Neuroscience
- Speech-Language Pathology
Background:
- Speech sound perception is crucial for communication.
- Brain damage can impair various cognitive functions, including auditory processing.
Purpose of the Study:
- To analyze error types in speech sound perception in brain-damaged individuals compared to controls.
- To determine if analyzing specific error types improves classification accuracy.
Main Methods:
- Speech-Sounds Perception Test administered to 104 normal controls and 56 diffusely brain-damaged patients.
- Analysis of Initial, Terminal, and Both error types.
- Logistic regression analysis to compare classification accuracy based on error types versus total score.
Main Results:
- The brain-damaged group exhibited a higher frequency of Terminal and Both errors.
- Classification accuracy was not significantly improved by considering specific error types compared to the total score.
Conclusions:
- Diffuse brain damage impacts specific patterns of speech sound perception errors.
- Total speech sound perception scores are as effective as detailed error analysis for subject classification in this cohort.