Brain vision recorder software version 1

Electroencephalographic data were collected using an actiCAP EEG system (Brain Products GmbH, Munich, Germany) and were acquired from 64-sites, labeled in accordance with an extended 10–20 international system (Jasper, 1958 ). The EEG data were online referenced to the right earlobe and a common ground was employed at the FPz site. Electrode impedances were maintained below 10 kΩ throughout the experiment and bandpass filters were set at .01–100 Hz with a sampling rate of 1 kHz. The EEG signal was amplified and digitized using a BrainAmp DC amplifier (Brain Products GmbH, Munich, Germany) linked to Brain Vision Recorder software version 1.10 (Brain Products GmbH, Munich, Germany) running on a Gateway laptop (Model MC7833U, Irvine, California)

Participants were seated in a sound-attenuated and electrically-shielded room, eyes open, in a slightly reclined chair with a headrest, and looked at a fixation cross presented at a 19‶ computer monitor. We recorded the EEG with a sampling rate of 1000 Hz, with 66 active electrodes mounted on an elastic cap (ActiCaps, Brain Products, Munich, Germany) using the Brain Vision Recorder software Version 1.10 (Brain Products, Munich, Germany). Electrodes were positioned in a modified 10/10 system without electrodes at FPz, F9, F10, T9, T10, CP3, CP4, P9, P10, PO7, PO8, and additional electrodes positions PO9 and PO10. Eye movements were recorded through four EOG channels. An electrode at the FCz position was the reference electrode. The electrode at position AFz served as ground. Impedances were always below 5 kΩ.