TY  - JOUR
A1  - Kliegl, Reinhold
A1  - Dambacher, Michael
A1  - Dimigen, Olaf
A1  - Jacobs, Arthur M.
A1  - Sommer, Werner
T1  - Eye movements and brain electric potentials during reading
JF  - Psychological research : an international journal of perception, attention, memory, and action
N2  - The development of theories and computational models of reading requires an understanding of processing constraints, in particular of timelines related to word recognition and oculomotor control. Timelines of word recognition are usually determined with event-related potentials (ERPs) recorded under conditions of serial visual presentation (SVP) of words; timelines of oculomotor control are derived from parameters of eye movements (EMs) during natural reading. We describe two strategies to integrate these approaches. One is to collect ERPs and EMs in separate SVP and natural reading experiments for the same experimental material (but different subjects). The other strategy is to co-register EMs and ERPs during natural reading from the same subjects. Both strategies yield data that allow us to determine how lexical properties influence ERPs (e.g., the N400 component) and EMs (e.g., fixation durations) across neighboring words. We review our recent research on the effects of frequency and predictability of words on both EM and ERP measures with reference to current models of eye-movement control during reading. Results are in support of the proposition that lexical access is distributed across several fixations and across brain-electric potentials measured on neighboring words.
Y1  - 2012
U6  - https://doi.org/10.1007/s00426-011-0376-x
SN  - 0340-0727
VL  - 76
IS  - 2
SP  - 145
EP  - 158
PB  - Springer
CY  - Heidelberg
ER  - 
TY  - JOUR
A1  - Dimigen, Olaf
A1  - Kliegl, Reinhold
A1  - Sommer, Werner
T1  - Trans-saccadic parafoveal preview benefits in fluent reading: A study with fixation-related brain potentials
JF  - NeuroImage : a journal of brain function
N2  - During natural reading, a parafoveal preview of the upcoming word facilitates its subsequent recognition (e.g., shorter fixation durations compared to masked preview) but nothing is known about the neural correlates of this so-called preview benefit. Furthermore, while the evidence is strong that readers preprocess orthographic features of upcoming words, it is controversial whether word meaning can also be accessed parafoveally. We investigated the timing, scope, and electrophysiological correlates of parafoveal information use in reading by simultaneously recording eye movements and fixation-related brain potentials (FRPs) while participants read word lists fluently from left to right. For one word the target (e.g., "blade") parafoveal information was manipulated by showing an identical ("blade"), semantically related ("knife"), or unrelated ("sugar") word as preview. In boundary trials, the preview was shown parafoveally but changed to the correct target word during the incoming saccade. Replicating classic findings, target words were fixated shorter after identical previews. In the EEG, this benefit was reflected in an occipitotemporal preview positivity between 200 and 280 ms. In contrast, there was no facilitation from related previews. In parafoveal-on-foveal trials, preview and target were embedded at neighboring list positions without a display change. Consecutive fixation of two related words produced N400 priming effects, but only shortly (160 ms) after the second word was directly fixated. Results demonstrate that neural responses to words are substantially altered by parafoveal preprocessing under normal reading conditions. We found no evidence that word meaning contributes to these effects. Saccade-contingent display manipulations can be combined with EEG recordings to study extrafoveal perception in vision.
KW  - EEG
KW  - Eye tracking
KW  - Active vision
KW  - Eye-fixation-related potentials (EFRP)
KW  - Parafoveal vision
KW  - Boundary technique
Y1  - 2012
U6  - https://doi.org/10.1016/j.neuroimage.2012.04.006
SN  - 1053-8119
SN  - 1095-9572
VL  - 62
IS  - 1
SP  - 381
EP  - 393
PB  - Elsevier
CY  - San Diego
ER  -