spike detect matlab
Post on 16-Jul-2015
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Detection of Interictal Spikes
Amplitude thresholding:• Simple• Based on StD
Look for something that stands out
threshold
Easily separable: much higher
amplitude
Wider than a spike – lower slope
Lower amplitudebelow 0.6
Movement Artifacts
Background activityTrue Spikes
Spike Sequences
Not every spike gets detected
•amplitude
0.06–0.2•sharp•smoothedges
High-frequency
noise on the edges
Using derivative to separate spike from background activity
Spike: peak at the derivative Background: no peak
Derivative as a detection method
(+) Very sensitive (-) Own problems
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