Journal
JOURNAL OF NEUROSCIENCE METHODS
Volume 177, Issue 1, Pages 194-198Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jneumeth.2008.09.033
Keywords
Spikes; Spike detection; Spike sorting; Filtering; Single cell recordings
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Funding
- EPSRC
- Life Sciences Interface Programme, MRC
- Royal Society
- Medical Research Council [G0701038] Funding Source: researchfish
- MRC [G0701038] Funding Source: UKRI
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We show that the standard filters used for on-line spike detection in most hardware acquisition systems introduce distortions in the recorded spike shapes. This is because on-line spike detection is done after band pass filtering the data with causal filters. As illustrated with three clusters of spike shapes from a real single cell recording in a human subject, causal filtering can create a spurious negative rebound and a smooth looking appearance of the spikes. We also show that these filtering distortions can make artifacts look similar to real spikes. (C) 2008 Elsevier B.V. All rights reserved.
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