Question regarding EEG channel spectra

heihei612heihei612 Hong Kong
in OpenBCI_GUI
Hello! I am a beginner in using the OpenBCI_GUI for my final year project. I could not generate a EEG channel spectra with a distinctive peak after repetitive trials. I can only generate graph similar to the right one below but I cannot generate the one like the left. Is there any way to solve this or it is normal? Thank you very much!
eeg channel spectra的圖片搜尋結果

Comments

  • BillhBillh
    1. The posterior alpha peak is seen with eyes closed. Are you recording with eyes closed.
    2. A small percentage of the the normal human population has little to no alpha activity at baseline. Have you tried another subject?

  • BillhBillh
    Here is a paper:  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5150228/

    The relevant quote: " In fact, of the 6029 participants, ∼88% had a peak frequency in the α range at the temporoparietal sites, while only 50% had an α peak frequency in the frontal sites."

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