Noise occlusion in discrete tone sequences as a tool towards auditory predictive processing?
Noise occlusion in discrete tone sequences as a tool towards auditory predictive processing?
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离散音调序列中的噪声遮挡作为听觉预测处理的工具？
DOI：
10.1016/j.brainres.2015.06.045
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发表时间：
2015
期刊：
影响因子：
2.9
通讯作者：
Reiche
中科院分区：
文献类型：
--
作者：
Bendixen;Reiche
预测编码的概念是许多听觉信息处理理论的共同特征。预测性听觉处理的实验证明往往依赖于忽略可预测的输入，以揭示大脑做出的预测。研究结果表明，遗漏可预测音调引起的听觉皮层活动与实际音调引起的活动相似。在这里，我们试图将这种方法扩展到使用噪音而不是遗漏，以捕获更普遍的感觉输入退化的情况。通过采用减法方法去除噪声本身的ERP效应，揭示了噪声“背后”诱发的听觉皮层活动。我们假设，覆盖可预测音调的噪音刺激引发的erp应该与实际音调引发的erp更相似，而不是对不可预测音调进行相同的比较。被动聆听期间的ERP结果在一定程度上证实了这一假设，但也指出了由于可预测性无关因素的贡献，在研究预测性听觉加工的神经相关性的这种特殊方法中的一些方法学警告。一项后续的主动聆听条件表明，当一个可预测的音调被噪音覆盖时，参与者并不会比不可预测的音调更容易将音调序列视为连续的。总的来说，目前形式的基于噪声的范式在揭示感知判断的预测处理或声音处理的早期神经相关方面并未显示出成功。我们在预测加工和虚幻听觉连续性的背景下讨论这些发现。本文是《SI：预测与关注》特刊的一部分。
The notion of predictive coding is a common feature of many theories of auditory information processing. Experimental demonstrations of predictive auditory processing often rest on omitting predictable input in order to uncover the prediction made by the brain. Findings show that auditory cortical activity elicited by the omission of a predictable tone resembles the activity elicited by the actual tone. Here we attempted to extend this approach towards using noises instead of omissions in order to capture a more prevalent case of degraded sensory input. By applying a subtraction approach to remove ERP effects of the noise itself, auditory cortical activity elicited “behind” the noise was uncovered. We hypothesized that ERPs elicited behind noise stimuli covering predictable tones should be more similar to ERPs elicited by the actual tones than when the same comparison is made for unpredictable tones. ERP results during passive listening partly confirm this hypothesis, but also point towards some methodological caveats in this particular approach towards studying neural correlates of predictive auditory processing due to contributions from predictability-unrelated factors. A follow-up active listening condition indicated that participants werenotmore likely to perceive the tone sequence as continuous when a predictable tone was covered with noise than when this pertained to an unpredictable tone. Overall, the noise-based paradigm in its present form was not shown to be successful in revealing predictive processing in perceptual judgments or early neural correlates of sound processing. We discuss these findings in the contexts of predictive processing and illusory auditory continuity.This article is part of a Special Issue entitled SI: Prediction and Attention.
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DOI：
10.1016/j.specom.2011.03.006
发表时间：
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期刊：
Speech Commun.
影响因子：
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影响因子：
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