Example Datasets - Dark Horse Neuro, Inc.

EvalPaperSampleData.zip

3 Data Sets for use with the MED Evaluation White Paper (CSC and NRD)
- 3 minute CSC and NRD data of the same 1mv Sine Wave data set
- 2 minute NRD data of the 100 µV Sine Wave data set
- Unzipped will create 3 directories
Analog Content:
- 1mvSineWaves: 32 channels CSC and NRD at +/-1mv 1Hz sines +/-5µV noise;
  Subsequent channels (31): amplitude decreased by 25 µV, frequency increased by 1Hz +/- 5 µv white noise;
- 100µVSineWaves: 32 channels NRD at +/- 100 µV 1 Hz sines +/-5µV noise
  1st channel: +/- 100 µV 1 Hz sine wave +/- 5 µV white noise;
  Subsequent channels (31): amplitude decreased by 2.5 µV, frequency increased by 1 Hz +/- 5 µV white noise;
Size: 851 MB zip file
Utility: Data used in the “MED Evaluation with CSC and NRD Sample Data” paper

Download EvalPaperSampleData.zip

Analog Content: 2 channels; 2.5 ms, 9 mV square wave pulses at 55 Hz
MED Content:
- Sampling Rate: 40 kHz (all channels)
- Segments: 6
- Discontinuities: 7
- Records: Note, Nlxp, & Sgmt
- Compression: PRED (all channels)
Size: 164 MB; 53 minutes
Utility: Visualizing screen aliasing, discontinuities, & records

Download example_data.medd

Analog Content: single, low noise intracranial macro channel with HFOs; replicated 3 times; 3 µV unique white noise added to each channel
MED Content:
- Sampling Rate: 5, 16, 32, & 40 kHz
- Segments: 1
- Discontinuities: none
- Records: Nlxp & Sgmt
- Compression: PRED (all channels)
Size: 2.2 MB; 100 seconds
Utility: Visualizing variable sampling frequency channels, & records

Download var_sf.medd.zip

Analog Content: 1st channel: +/- 100 µV 1 Hz sine wave +/- 5 µV white noise;
Subsequent channels (31):amplitude decreased by 2.5 µV, frequency increased by 1 Hz from previous channel;
+/- 5 µV white noise;
MED Content:
- Sampling Rate: 32 kHz (all channels)
- Segments: 1
- Discontinuities: none
- Records: Nlxp & Sgmt
- Compression: PRED (all channels)
Size: 87 MB; 3 minutes
Utility: MED output of CSC2MED with “CSC_sine_waves” input & NRD2MED with “NRD_sine_waves.nrd”

Download sine_waves.medd

Analog Content: 1st channel: +/- 100 µV 1 Hz sine wave +/- 5 µV white noise;
Subsequent channels (31): amplitude decreased by 2.5 µV, frequency increased by 1 Hz from previous channel;
+/- 5 µV white noise;
Size: 182 MB; 3 minutes
Utility: test input for CSC2MED

Download CSC_sine_waves.zip

Analog Content: First channel: +/- 100 µV 1 Hz sine wave +/- 5 µV white noise;
Subsequent channels (31):amplitude decreased by 2.5 µV, frequency increased by 1 Hz from previous channel;
+/- 5 µV white noise;
Size: 1.07 GB; 3 minutes
Utility: test input for NRD2MED

Download NRD_sine_waves.nrd

Analog Content: single, intracranial microwire channel with unit waveforms; replicated 21 times
MED Content:
- Sampling Rate: 30 kHz (all channels)
- Segments: 1
- Discontinuities: none
- Records: none
- Compression: PRED +/- antialias & noise floor filters; VDS at various thresholds & LFP-filter settings
Size: 14.5 MB; 60 seconds
Utility: Visualizing effects of different compression parameters

Download compression_comparison.medd

Analog Content:
- 1st channel: single, low noise intracranial microwire channel with unit waveforms with 60 Hz line noise added (5th channel)
- 2nd channel: 1st channel before line noise added (5th channel)
- 3rd channel: 1st channel with DHN line noise removal algorithm applied
- 4th channel: 1st channel with notch filter applied (55-65 Hz bandstop; 4 pole Butterworth IIR; forward & reverse filter)
- 5th channel: real-world, separately-recorded, 60 Hz line noise
- 6th channel: 1st channel minus 3rd channel (for comparison with 5th channel)
- 7th channel: 1st channel minus 4rd channel (for comparison with 5th channel)
MED Content:
- Sampling Rate: 30 kHz (all channels)
- Segments: 1
- Discontinuities: none
- Records: none
- Compression: (all channels)
Size: 31 MB; 5 minutes
Utility: Visualizing efficacy of DHN line noise removal vs. notch filtering

Download line_noise_comparison.medd