Table 1 Survey questions and response options

1. Hospital name

Manual input

2. Hospital level

The 3A-grade; the 3B-grade; the 2A-grade; the 2B-grade; the 1A-grade

3. Department

Neurology; Neurology Intensive Care Unit; Neurology Brain Function Unit; the EEG Unit; Neurosurgery; Intensive Care Unit; Others

4. Service crowd

Children; Adult; Children and adult

5. Software of EEG

Nicolet; Nihon Kohden; Cadwell; Natus; EBNeuro; Harmonie; Philip EGI; Domestic EEGs of China

6. The duration of scalp EEG monitoring

About 20–30 min; About 2–3 h; About 12 h; About 24 h; About 1–5 days; or Longer

7. Does your institution use QEEG

Yes or No

8. Software of QEEG

Nicolet; Nihon Kohden; Natus; EBNeuro; Persyst; Others

9. The way to analyze QEEG

Real-time data processing and analysis; Retrospective data processing and analysis

10.Clinical indications for QEEG utilization

Quantitative and trend analysis of long-term EEG of epilepsy monitoring unit; Analysis of brain function in intensive care unit; Scientific research; Automatic seizure detection; Ischemia detection; Others

11.Items of QEEG

Spectrogram; Amplitude-integrated EEG; Automatic seizure detection; Automatic detection of spikes; Burst suppression ratio; Artifact detection; Rhythmicity spectrogram; Asymmetry index; Frequency domain analysis; Compressed spectral array; Fast Fourier transformation spectrogram; Time domain analysis; Power by frequency band; Peak envelope; Alpha-delta ratio; Time–frequency domain analysis; Rhythmicity by channel; Others

12. The duration of raw EEG on a page for QEEG

About 10–30 min; About 30–60 min; About 1–4 h; About 4–8 h; More than 8 h; Others

13. Does your institution use the brain electrical activity mapping

Yes or No

14. The duration of raw EEG on a page for the brain electrical activity mapping

About 1–10 s; About 10–60 s; More than 60 s; Others or any choice of time