PT - JOURNAL ARTICLE AU - Michael Okun TI - Artefactual origin of biphasic cortical spike-LFP correlation AID - 10.1101/051029 DP - 2016 Jan 01 TA - bioRxiv PG - 051029 4099 - http://biorxiv.org/content/early/2016/08/07/051029.short 4100 - http://biorxiv.org/content/early/2016/08/07/051029.full AB - Electrophysiological data acquisition systems introduce various distortions into the signals they record. While such distortions were discussed previously, their effects are often not appreciated. Here I show that the biphasic shape of cortical spike-triggered LFP average (stLFP), reported in multiple studies, is likely an artefact introduced by high-pass filter of the neural data acquisition system when the actual stLFP has a single trough around the zero lag.