Thompson M E, Abel S M
Hearing Research Laboratory, Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada.
Scand Audiol Suppl. 1992;35:17-22.
The response times of three groups of subjects with pathology of the auditory pathway, localized either to the eighth nerve or to the right or left temporal cortex, were compared on three psychoacoustic tasks. These tasks included detection, frequency discrimination and duration discrimination. Measurements were made at two stimulus frequencies, 500 and 2000 Hz, in combination with two durations, 50 and 300 ms. The results were compared to those obtained for normal hospitalized and non-hospitalized control subjects. All subjects, except those with acoustic neuroma, had age-corrected normal hearing. Statistically significant group differences were apparent in discrimination but not detection, indicating the importance of task demands for response time measures, especially in patients with cortical pathology. The outcomes were not related to neuropsychological measures of speed or accuracy, supporting the conclusion that the time for decision-making rather than motor function had been affected.
对三组听觉通路存在病变（病变部位位于第八对脑神经或右侧或左侧颞叶皮质）的受试者在三项心理声学任务中的反应时间进行了比较。这些任务包括检测、频率辨别和时长辨别。测量是在500和2000赫兹这两种刺激频率下，结合50和300毫秒这两种时长进行的。将结果与正常住院和非住院对照受试者的结果进行了比较。除听神经瘤患者外，所有受试者的听力经年龄校正后均正常。在辨别任务中存在统计学上显著的组间差异，但在检测任务中没有，这表明任务要求对反应时间测量很重要，尤其是在患有皮质病变的患者中。结果与速度或准确性的神经心理学测量无关，支持了决策时间而非运动功能受到影响的结论。
