Statistically robust evidence of stochastic resonance in human auditory perceptual system
Statistically robust evidence of stochastic resonance in human auditory perceptual system
复制标题
人类听觉感知系统中随机共振的统计有力证据
DOI：
10.1140/epjb/e2009-00107-6
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
L. Ricci
中科院分区：
文献类型：
--
作者：
D. Tabarelli;A. Vilardi;C. Begliomini;F. Pavani;M. Turatto;L. Ricci
在人类感知中，已知外源噪声产生掩蔽效应，即相对于作用于相同模态的刺激的感知阈值的增加。然而，与直觉相反的是，相反的机制偶尔会发生：对于非零的、良性的噪声量，感知阈值会降低。这种机制被称为随机共振，被认为提供了有关噪声在人脑中作用的重要信息。在本文中，我们研究了在听觉模态检测任务中的随机共振。听力正常的参与者被要求判断不同强度的声刺激的存在，并叠加到不同水平的白色噪音。一个行为实验的矩阵样的结果拟合的二维，噪声依赖的心理功能。拟合结果显示，在43%的实验运行中存在统计学显著的随机共振。我们的结论是，在听觉模态，随机共振是一个微小的影响，在传统的情况下，在很大程度上是由标准的掩蔽溢出。
In human perception, exogenous noise is known to yield a masking effect, i.e. an increase of the perceptual threshold relative to a stimulus acting on the same modality. However, somehow counter-intuitively, the opposite mechanism can occasionally occur: a decrease of the perceptual threshold for a non-vanishing, virtuous amount of noise. This mechanism, called stochastic resonance, is deemed to provide important information about the role of noise in the human brain. In this paper, we investigate stochastic resonance in a detection task in the auditory modality. Normal-hearing participants were asked to judge the presence of acoustic stimuli of different intensity and superimposed to different levels of white noise. The matrix-like outcomes of a behavioural experiment were fitted by a two-dimensional, noise-dependent psychometric function. The fit revealed a statistically significant stochastic resonance in 43% of the experimental runs. We conclude that, in the auditory modality, stochastic resonance is a tiny effect that, under conventional circumstances, is largely overrun by standard masking.
影响因子：
8.6
作者：
Priplata, A;Niemi, J;Collins, JJ
通讯作者：
Collins, JJ