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Temporal resolution and speech recognition ability of patients with retrocochlear auditory dysfunction.
Toshiyuki Shibata1, Tetsushi Sakashita, Hideo Yamane
1Department of Otolaryngology and Head & Neck Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan. toshiyuki@med.osaka-cu.ac.jp
Acta Oto-Laryngologica. Supplementum
|October 30, 2004
Summary
Temporal resolution, measured by gap detection, is often reduced in patients with retrocochlear auditory dysfunction. However, this reduction does not always correlate with poor speech recognition in quiet.
Area of Science:
- Audiology
- Neuroscience
- Speech-Language Pathology
Background:
- Retrocochlear auditory dysfunction can impact auditory processing.
- Temporal resolution is crucial for understanding speech.
Purpose of the Study:
- To investigate the relationship between temporal resolution and speech recognition in patients with retrocochlear auditory dysfunction.
Main Methods:
- Measured gap detection thresholds (GDTs) using dichotic stimuli in 23 patients.
- Assessed the correlation between GDTs and maximum speech recognition scores (max. SRSs) in quiet.
Main Results:
- 17 out of 23 patients showed abnormal GDTs at one or more frequencies.
- Abnormal GDTs across more frequencies did not consistently correlate with poorer speech recognition.
Conclusions:
- Reduced temporal resolution is common in retrocochlear auditory dysfunction.
- Deterioration in temporal resolution may not always predict poor speech recognition in quiet.