Matrix data in Matlab - LSL - Neurofeedback

BeatriceBBeatriceB Germany
in Cyton
Dear All,

I am using Cyton Board with gold cup electrodes for my neurofeedback study (neurofeedback of alpha suppression during a memory task). To stream the signal in real time and for neurofeedback purposes I am using Matlab and LSL. Unfortunately, I cannot take the raw data from the OpenBCI GUI because the GUI cannot work together with LSL. 

If I look to the raw data (a normal baseline without neurofeedback) in the OpenBCI GUI, the value of the data is like i.e.,  -15078.69. When I import the .txt file into Matlab and convert it into a matrix, the value of data gets like i.e., -15078.69e+04. Why does this happen? I get the same value (-15078.69e+04) when I record the data for real time neurofeedback with LSL (in a raw data .mat file, matrix data). 

Can someone explain this to me? 

Thank you for your time, help and patience :)

Best,
Beatrice

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