事件相关fMRI实验中受试者发声反应时间的自动提取方法

Question

我已经成功地从参与者在MRI扫描仪中的回答中提取了他们公开的单词阅读反应时数据。这是我用matlab http://www.mathworks.in/matlabcentral/fileexchange/38761-function-to-calculate-reaction-time编写的函数，但它只有在只有一个语音响应时才起作用。当音频文件包含多个人工响应时，它会失败。

Answer 1

我是否正确理解了您是这样标识响应的：

Step 1: Calculate the average signal height in the set 

Step 2: Find the place where the signal is sufficiently higher than the average

在这种情况下，我建议如下：

Start with a small subset (startpoint is the startpoint of the original set)

Do Step 1 and Step 2 for the subset

If nothing is found, increase the subset size and do Step 1 and Step 2 again.