QEEG-64FX Device Control Filter Selection
It can be individually applied to each signal group and can be selected according to the frequency of the measurement target.
High Pass Filter
0Hz,0.1Hz, 0.5Hz, 2.5Hz, 12.5Hz, 25Hz.
- 0Hz is a mode that does not apply HPF and includes DC component.
HPF Detailed characteristics for each frequency: See Appendix A.
Low Pass Filter
| Sampling frequency | LPF frequency |
| 250Hz | 12.5Hz, 25Hz, 50Hz, off |
| 500Hz | 25Hz, 50Hz, 100Hz, off |
| 1000Hz | 50Hz, 100Hz, 200Hz, off |
| 2000Hz | 100Hz, 200Hz, 400Hz, off |
Typical filter selection by measurement target.
– The table below is a typical example and can be changed according to the purpose of experiment.
| Measurement target | HPF | LPF |
| EEG Spontaneous Potential | 0.5Hz, 2.5Hz | More than 50Hz |
| EOG | 0.1Hz | 12.5Hz |
| ECG Simple monitoring | 2.5Hz | 25Hz |
| ECG Waveform Details | 0.1Hz, 0.5Hz | More than 100Hz |
| EMG | 12.5Hz, 25Hz | More than 400Hz |
QEEG-64FX’s EOG and ECG channels are bipolar input channels and can be used for EMG and EEG measurements.
