TY  - JOUR
A1  - Dimigen, Olaf
A1  - Sommer, Werner
A1  - Hohlfeld, Annette
A1  - Jacobs, Arthur M.
A1  - Kliegl, Reinhold
T1  - Coregistration of eye movements and EEG in natural reading analyses and review
T2  - Journal of experimental psychology : General
N2  - Brain-electric correlates of reading have traditionally been studied with word-by-word presentation, a condition that eliminates important aspects of the normal reading process and precludes direct comparisons between neural activity and oculomotor behavior. In the present study, we investigated effects of word predictability on eye movements (EM) and fixation-related brain potentials (FRPs) during natural sentence reading. Electroencephalogram (EEG) and EM (via video-based eye tracking) were recorded simultaneously while subjects read heterogeneous German sentences, moving their eyes freely over the text. FRPs were time-locked to first-pass reading fixations and analyzed according to the cloze probability of the currently fixated word. We replicated robust effects of word predictability on EMs and the N400 component in FRPs. The data were then used to model the relation among fixation duration, gaze duration, and N400 amplitude, and to trace the time course of EEG effects relative to effects in EM behavior. In an extended Methodological Discussion section, we review 4 technical and data-analytical problems that need to be addressed when FRPs are recorded in free-viewing situations (such as reading, visual search, or scene perception) and propose solutions. Results suggest that EEG recordings during normal vision are feasible and useful to consolidate findings from EEG and eye-tracking studies.
KW  - EEG
KW  - eye tracking
KW  - fixation-related potentials
KW  - artifact correction
KW  - natural viewing
Y1  - 2011
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/36530
SN  - 0096-3445
VL  - 140
IS  - 4
SP  - 552
EP  - 572
PB  - American Psychological Association
CY  - Washington
ER  -