Trial by trial coupling of simultaneous 61-channel EEG and fMRI: The N1-effect revisited

Introduction: Attentional effects in the timeframe of the event-related N1 potential have been described and addressed as „N1-effect“ more than thirty years ago. In the meantime this effect has been widely used as a tool to investigate attentional processes. While there has been some debate whether about the character of this phenomenon, e.g. in the sense of an overlapping „processing negativity“ on the basic and obligatory N1 potential, until recently no doubt has been formulated about the temporal lobe / auditory cortex origin of this effect. In the last years however, some hints exist for an additional contri…