TY - JOUR T1 - Artefactual origin of biphasic cortical spike-LFP correlation JF - bioRxiv DO - 10.1101/051029 SP - 051029 AU - Michael Okun Y1 - 2016/01/01 UR - http://biorxiv.org/content/early/2016/08/07/051029.abstract N2 - 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. ER -