title: Welcome to the real world: validating fixation-related brain potentials for ecologically valid settings.
abstract: Exploration of the real world usually expresses itself through a perceptual behaviour that is complex and adaptive -- an interplay between external visual and internal cognitive states. However, up to now, the measurement of electrophysiological correlates of cognitive processes has been limited to situations, in which the experimental setting confined visual exploration to the mere reception of a strict serial order of events. Here we show -- exemplified by the well known old/new effect in the domain of visual word recognition -- that an alternative approach that utilizes brain potentials corresponding to eye fixations during free exploration reveals effects as reliable as conventional event-related brain potentials.
authors.affiliation: Faculty of Psychology, University of Vienna, Department of Psychological Basic Research, Liebiggasse 5, A-1010, Wien, Austria. florian.hutzler@univie.ac.at
authors.forename: Florian
authors.initials: F
authors.lastname: Hutzler
authors.forename: Mario
authors.initials: M
authors.lastname: Braun
authors.forename: Melissa L-H
authors.initials: ML
authors.lastname: Võ
authors.forename: Verena
authors.initials: V
authors.lastname: Engl
authors.forename: Markus
authors.initials: M
authors.lastname: Hofmann
authors.forename: Michael
authors.initials: M
authors.lastname: Dambacher
authors.forename: Helmut
authors.initials: H
authors.lastname: Leder
authors.forename: Arthur M
authors.initials: AM
authors.lastname: Jacobs
mesh_terms: D000328:Adult; D001921:Brain / Q000502:physiology*; D001931:Brain Mapping; D004569:Electroencephalography / Q000379:methods; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D005403:Fixation, Ocular; D007839:Functional Laterality; D006801:Humans; D008297:Male; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D011930:Reaction Time / Q000502:physiology; D015203:Reproducibility of Results