Department of Psychological and Brain Sciences, Indiana University, USA.
J Exp Psychol Hum Percept Perform. 2010 Feb;36(1):224-34. doi: 10.1037/a0017609.
The effect of feedback and materials on perceptual learning was examined in listeners with normal hearing who were exposed to cochlear implant simulations. Generalization was most robust when feedback paired the spectrally degraded sentences with their written transcriptions, promoting mapping between the degraded signal and its acoustic-phonetic representation. Transfer-appropriate processing theory suggests that such feedback was most successful because the original learning conditions were reinstated at testing: Performance was facilitated when both training and testing contained degraded stimuli. In addition, the effect of semantic context on generalization was assessed by training listeners on meaningful or anomalous sentences. Training with anomalous sentences was as effective as that with meaningful sentences, suggesting that listeners were encouraged to use acoustic-phonetic information to identify speech than to make predictions from semantic context.
本研究旨在探讨正常听力者在接受人工耳蜗模拟刺激时，反馈和材料对感知学习的影响。当反馈将频谱失真的句子与其书面转录本配对时，最有利于推广，促进了降级信号与其声学语音表示之间的映射。转移适当加工理论表明，这种反馈最为成功，因为在测试中重新建立了原始学习条件：当训练和测试都包含降级刺激时，表现得到促进。此外，通过对有意义或异常句子进行训练，评估了语义语境对推广的影响。使用异常句子进行训练与使用有意义句子的效果一样，这表明听众被鼓励使用声学语音信息来识别语音，而不是从语义语境中做出预测。
