User`s manual

Cerebus® User’s Manual
Revision 13.00 / LB-0028 Page 62
Manual PCA
1) Open Hardware Configuration window.
2) Select the channels that need to be spike sorted.
3) Right click and choose Properties or click on the properties icon.
4) Choose “Manual PCA” from the spike sorting drop down menu.
5) Open Single Neural Channel.
6) From the drop down menu choose the desired channel.
7) Make sure the unit icon is pressed down so you can see the units window.
8) Click on the Feature tab.
Figure 54 - PCA Space
9) Click on Build PCA. By default the program needs 250 waveforms to build the PCA basis vectors. This may take a few
minutes. The default 250 number can be modified through Hardware Configuration => Spike Sorting.
10) On ther right side, click on Define for a given unit.
11) Hold down the CTRL key and draw a line around a given cluster. The progrm will automatiicaly create an ellipsoid
around the cluster. Repeat this process for all the other units and channels.