%0 Journal Article %A Michael Okun %T Artefactual origin of biphasic cortical spike-LFP correlation %D 2016 %R 10.1101/051029 %J bioRxiv %P 051029 %X 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. %U https://www.biorxiv.org/content/biorxiv/early/2016/08/07/051029.full.pdf