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Conference Abstracts: 14th European Conference on Eye Movements ECEM2007Kliegl, Reinhold, Engbert, Ralf January 2007 (has links)
No description available.
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The game of word skipping: Who are the competitors?Engbert, Ralf, Kliegl, Reinhold January 2003 (has links)
Computational models such as E-Z Reader and SWIFT are ideal theoretical tools to test quantitatively our current understanding of eye-movement control in reading. Here we present a mathematical analysis of word skipping in the E-Z Reader model by semianalytic methods, to highlight the differences in current modeling approaches. In E-Z Reader, the word identification system must outperform the oculomotor system to induce word skipping. In SWIFT, there is competition among words to be selected as a saccade target. We conclude that it is the question of competitors in the “game” of word skipping that must be solved in eye movement research.
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How tight is the link between lexical processing and saccade programs?Kliegl, Reinhold, Engbert, Ralf January 2003 (has links)
We question the assumption of serial attention shifts and the assumption
that saccade programs are initiated or canceled only after stage
one of word identification. Evidence: (1) Fixation durations prior to
skipped words are not consistently higher compared to those prior to nonskipped
words. (2) Attentional modulation of microsaccade rate might occur
after early visual processing. Saccades are probably triggered by attentional
selection.
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Human Microsaccade-Related Visual Brain ResponsesDimigen, Olaf, Valsecchi, Matteo, Sommer, Werner, Kliegl, Reinhold January 2009 (has links)
Microsaccades are very small, involuntary flicks in eye position that occur on average once or twice per second during attempted visual fixation. Microsaccades give rise to EMG eye muscle spikes that can distort the spectrum of the scalp EEG and mimic increases in gamma band power. Here we demonstrate that microsaccades are also accompanied by genuine and sizeable cortical activity, manifested in the EEG. In three experiments, high-resolution eye movements were corecorded with the EEG: during sustained fixation of checkerboard and face stimuli and in a standard visual oddball task that required the counting of target stimuli. Results show that microsaccades as small as 0.15° generate a field potential over occipital cortex and midcentral scalp sites 100 –140 ms after movement onset, which resembles the visual lambda response evoked by larger voluntary saccades. This challenges the standard assumption of human brain imaging studies that saccade-related brain activity is precluded by fixation, even when fully complied with. Instead, additional cortical potentials from microsaccades were present in 86% of the oddball task trials and of similar amplitude as the visual response to stimulus onset. Furthermore, microsaccade probability varied systematically according to the proportion of target stimuli in the oddball task, causing modulations
of late stimulus-locked event-related potential (ERP) components. Microsaccades present an unrecognized source of visual brain signal that is of interest for vision research and may have influenced the data of many ERP and neuroimaging studies.
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Zur Interaktion von Verarbeitungstiefe und dem Wortvorhersagbarkeitseffekt beim Lesen von SätzenBohn, Christiane, Kliegl, Reinhold January 2008 (has links)
No description available.
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International Collaboration in Psychology is on the RiseKliegl, Reinhold, Bates, Douglas January 2011 (has links)
There has been a substantial increase in the percentage for publications with co-authors located in departments from different countries in 12 major journals of psychology. The results are evidence for a remarkable internationalization of psychological research, starting in the mid 1970s and increasing in rate at the beginning of the 1990s. This growth occurs against a constant number of articles with authors from the same country; it is not due to a concomitant increase in the number of co-authors per article. Thus, international collaboration in psychology is obviously on the rise.
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Psychologie im 21. Jahrhundert: Führende deutsche Psychologen über Lage und Zukunft ihres Fachs und die Rolle der psychologischen GrundlagenforschungFiedler, Klaus, Kliegl, Reinhold, Lindenberger, Ulman, Mausfeld, Rainer, Mummendey, Amélie, Prinz, Wolfgang January 2005 (has links)
No description available.
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Face Memory Skill AcquisitionKliegl, Reinhold, Philipp, Doris, Luckner, Matthias, Krampe, Ralf T. January 2001 (has links)
No description available.
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A linear mixed model analysis of masked repetition primingKliegl, Reinhold, Masson, Michael E. J., Richter, Eike M. January 2009 (has links)
We examined individual differences in masked repetition priming by re-analyzing item-level response-time (RT) data from three experiments. Using a linear mixed model (LMM) with subjects and items specified as crossed random factors, the originally reported priming and word-frequency effects were recovered. In the
same LMM, we estimated parameters describing the distributions of these effects across subjects. Subjects’ frequency and priming effects correlated positively with each other and negatively with mean RT. These correlation estimates, however, emerged only with a reciprocal transformation of RT (i.e., -1/RT), justified on the basis of distributional analyses. Different correlations, some with opposite sign, were obtained (1) for untransformed or logarithmic RTs or (2) when correlations were computed using within-subject analyses. We discuss the relevance of the new results for accounts of masked priming, implications of applying RT transformations, and the use of LMMs as a tool for the joint analysis of experimental effects and associated individual differences.
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Microsaccade orientation supports attentional enhancement opposite to a peripheral cue: Commentary on Tse, Sheinberg, and LogothetisRolfs, Martin, Kliegl, Reinhold, Engbert, Ralf January 2004 (has links)
No description available.
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