User`s manual

Cerebus® User’s Manual
Revision 13.00 / LB-0028 Page 33
Global Settings
Figure 29 - Global Settings
o Spike Properties: Define variables related to the size of a spike-triggered spike.
o Spike Width: Allows a user definable number of samples to be collected in the spike-triggered processing window. The
default value is 48 samples. This would collect spike-triggered waveforms for 1.6-ms. The spike width can be set as
small as 30 samples (1.0 ms) and as large as 128 samples (4.3 ms). The longer this value the larger the size of a spike-
triggered waveform.
o Prethreshold Samples: The number of samples to capture before the threshold is crossed. The default value is 10,
meaning that 10 samples, before the point of crossing threshold, are captured.
o Line Noise Frequency: The line frequency of the system, either 50 Hz or 60 Hz. This value changes in different
countries. For example, line noise frequency in the Unites States is 60 Hz, but it is 50 Hz in the Europe.
o LNC Reference Channel: The reference channel used to extract the line noise. The extracted line noise for each channel
can be viewed in Single Neural Channel when the Raw/LNC button is checked.