Modelling event-related skin conductance responses.

Modelling event-related skin conductance responses.
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DOI:
10.1016/j.ijpsycho.2010.01.005
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发表时间:
2010-03
影响因子:
3
通讯作者:
Dolan, Raymond J.
Dolan, Raymond J.
中科院分区:
心理学3区
文献类型:
--
作者:
Bach, Dominik R.;Flandin, Guillaume;Friston, Karl J.;Dolan, Raymond J.

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心理生理信号的分析工具通常会做出不明确的隐含假设。在开发一个数学框架,分析皮肤电导反应[SCR],我们正式提出我们的假设,假定SCR可以被视为一个线性时不变滤波器的输出。在这里,我们提供了这些假设的实证检验。我们的研究结果表明,一个大的组成部分的变化,在SCR可以解释一个响应函数每个人。我们注意到,基线方差(即在没有诱发反应的情况下的方差)高于不能由诱发反应的线性时不变模型解释的方差。此外,没有证据表明诱发反应之间的非线性相互作用依赖于它们的时间重叠。我们开发了一个典型的响应函数,并表明它可以用于从不同的记录网站的信号。我们讨论了这些意见的影响,基于模型的分析SCR。
Analytic tools for psychophysiological signals often make implicit assumptions that are unspecified. In developing a mathematical framework for analysis of skin conductance responses [SCRs], we formalise our assumptions by positing that SCRs can be regarded as the output of a linear time-invariant filter. Here, we provide an empirical test of these assumptions. Our findings indicate that a large component of the variance in SCRs can be explained by one response function per individual. We note that baseline variance (i.e. variance in the absence of evoked responses) is higher than variance that could not be explained by a linear time-invariant model of evoked responses. Furthermore, there was no evidence for nonlinear interactions among evoked responses that depended on their temporal overlap. We develop a canonical response function and show that it can be used for signals from different recording sites. We discuss the implications of these observations for model-based analysis of SCRs.
DOI: 10.1016/j.jneumeth.2009.08.005
发表时间: 2009-11-15
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期刊: PSYCHOPHYSIOLOGY
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