User`s manual

Cerebus® User’s Manual
Revision 13.00 / LB-0028 Page 36
Spike Sorting
This window allows the user to specify the rules and settings used with the automatic spike sorting. The default
settings are recommended, but can be changed to user preference.
Figure 32 – Histogram Peak Count Spike-sorting Properties
Figure 33 – Manual PCA Spike-sorting Properties
o Method: Choose between the automatic Histogram Peak Count and Manual PCA methods.
o Method Histogram Peak Count: Collected waveforms are processed and waveform sample points are projected into a
feature space containing a high-frequency component and a low-frequency component of the waveforms on its axis. A
histogram is constructed. Clusters are then estimated by determining peaks and valleys and are sorted into units.
o Valley Percentage: The first peak from the origin is detected and marked. To find a valley the valley height needs to be
less than the first peak’s height x the valley percentage value (valley height < first peak height x valley percentage).