@misc{DimigenSommerHohlfeldetal.2011,
  author    = {Dimigen, Olaf and Sommer, Werner and Hohlfeld, Annette and Jacobs, Arthur M. and Kliegl, Reinhold},
  title     = {Coregistration of eye movements and EEG in natural reading analyses and review},
  series = {Journal of experimental psychology : General},
  volume    = {140},
  journal   = {Journal of experimental psychology : General},
  number    = {4},
  publisher = {American Psychological Association},
  address   = {Washington},
  issn      = {0096-3445},
  doi       = {10.1037/a0023885},
  pages     = {552 -- 572},
  year      = {2011},
  abstract  = {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.},
  language  = {en}
}
@article{KlieglDambacherDimigenetal.2012,
  author    = {Kliegl, Reinhold and Dambacher, Michael and Dimigen, Olaf and Jacobs, Arthur M. and Sommer, Werner},
  title     = {Eye movements and brain electric potentials during reading},
  series = {Psychological research : an international journal of perception, attention, memory, and action},
  volume    = {76},
  journal   = {Psychological research : an international journal of perception, attention, memory, and action},
  number    = {2},
  publisher = {Springer},
  address   = {Heidelberg},
  issn      = {0340-0727},
  doi       = {10.1007/s00426-011-0376-x},
  pages     = {145 -- 158},
  year      = {2012},
  abstract  = {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.},
  language  = {en}
}