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Spectrum Tab

This tab displays the Power Spectral Density (PSD) and Signal to Noise Ratio (SNR) of the Spatial Filter 1 timeseries.

The buffer maintains a three-minute period (configurable in the "Advanced" tab) of data to calculate the PSD and SNR. The bossapp continuously updates the buffer as new data comes in (i.e. the buffer will always have the most recent three minutes of data). When "Update Spectrum" is pressed, the bossapp will calculate and display the PSD and SNR for the three-minute period of data in the buffer. The PSD and SNR plots do not automatically or continuously update. They only update when the "Update Spectrum" button is pressed.

The "Clear Buffer" button empties the buffer. "Update Spectrum" cannot be pressed until a minimum data threshold is present in the buffer.

Notes

  • If the EEG configuration is changed, the buffer should be cleared.
  • The Spectrum Buffer and the Phase Estimation Accuracy Buffer are independent and clearing one will not clear the other.

The "Export Spectrum" button captures an image of the PSD and SNR plots and saves the image as a .pdf. This .pdf will be saved on your desktop.

The y-axes for both plots will auto-scale once PSD and SNR are computed.