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Dear professor,
   I have some questions about ICA. The first is if ICA values coincide with the real amplitude of the responses? That is, if the bigger the ICA values are, the bigger the amplitude of this response are? What is the relationship between ICA value and amplitude?
   Aonther question, when I do plot/componets ERPS/with componets maps, there are a pair of waves for each colored lines which represent different components, why is there two lines of every color? What's the meaning of the two lines? In addition, we can see two black lines which named as 'envelops'of ERPS, what's the true meaning of the two black lines?
   Thank you very much!
   Best regards,
   Zhimei Qiao

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