Glad to hear that our suggestions have worked out for the ECG. Regarding from the EDA plots it appears indeed to be a typical signal trace.
Note that the EDA greatly varies amongst people as each individual has differences in the way his/her sympathetic nervous system works.
Furthermore, the baseline is usually different as well due to skin moisture, temperature and other subject-specific factors.
As such, it is somehow expected that different users have different EDA profiles. You should seek relative measures like even amplitude, etc.
For in-depth information about this signal source, please refer to the following book: http://www.springer.com/us/book/9781461411253
As for the value below zero, further support will be provided. For now, please confirm that you're using the correct transfer function for your sensor:http://bitalino.com/datasheets/REVOLUTION_EDA_Sensor_Datasheet.pdfhttp://bitalino.com/datasheets/EDA_Sensor_Datasheet.pdf
The BITalino Team