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Epilepsy Monitoring
128-channel EEG Headbox
| Inputs |
65 EEG, 1 respiration |
| Input impedance |
100 MΩ |
| Noise |
<1.5 µVpp (filter 70 Hz) |
| Common mode rejection |
>100 dB at 50 Hz |
| Stimulation input |
electrical stimulation of single electrodes by external
stimulator |
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| Sensitivities |
10-1000 µV/div. (13 steps) |
| Highcut filters |
15-30-70-300-350 Hz |
| Lowcut filters |
0.005-50 Hz (13 steps) |
| Time constants |
0.003-32 s (13 steps) |
| Notch filter |
digital, 50 Hz |
| Calibration signal |
10 Hz sine wave or 0.33 Hz square wave |
| Calibration amplitudes |
100 µV |
| Blocking |
manual (button) |
Analog to Digital
conversion |
| Resolution |
16 bit |
| Sampling rate |
125-250-500-1000 Hz |
| Antialiasing filter |
in headbox, cutoff at approx. 1/3 of sampling
rate |
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Neurophysiology |
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