User`s manual

Cerebus® User’s Manual
Revision 13.00 / LB-0028 Page 59
Set a Threshold Value for Spike Detection
Spikes are extracted when the signal crosses a previously set threshold value. There are several ways to set threshold
values for spike extraction.
Automatic threshold
1) In Hardware Configuration, click on Analog Input and choose the channels of interest.
2) Right click and choose Properties or click on the Properties icon on top of the window.
3) Select Auto Threshold. The program will use the algorithm described under “Auto Thresholding” section.
Fixed µV value
1) In Hardware Configuration, click on Analog Input and choose the channels of interest.
2) Right click and choose Properties or click on the Properties icon on top of the window.
3) Enter a µV value in the Threshold Value box and click on Set All Thresholds.
4) Alternatively, you can click on Thresholding on Central and then enter a µV value in the “Value (µV)” box and click
on Set All Thresholds. This will set the given threshold value for all channels.
Multiplier of the RMS of the noise
1) Run Central.
2) Click on Thresholding.
3) Enter a value in the “RMS Multiplier” field.
4) Click on Set All Thresholds. This method will independently calculate the RMS of the noise band for each channel and
set the threshold at a multiplied value of the noise RMS.