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Chapter 7
FFT
7.1
FFT at a Glance
In FFT panel, you can see the square of the instantaneous FFT power of your
desired band.
Figure 7.1 FFT
7.2
FFT Setting Table
In the FFT setting table, you can see some items to change:
• Channel: You can select the channel you want to see its frequency content.
• Band: You may want to see the FFT of specific EEG band or any other
frequency band that you want. You can choose one of the predefined EEG
bands on the setting table or enter a band in the forms of St ar t B and −
St opB and .
• V/D: The amplitude of the FFT signal may be in different scales such as
µv, mv or v. The signal maybe too small or too large to be seen in the FFT.
Therefore, you need to change the vertical scale (Volt/Division) using V/D.
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