@misc{BrachvonGumppenberg2009,
  author    = {Brach von Gumppenberg, Markus},
  title     = {Der Kaukasus : Symptome einer Krisenregion},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-27827},
  year      = {2009},
  abstract  = {Am 8. August 2008 richtete sich alle mediale Aufmerksamkeit schlagartig von Beijing und den Olympischen Spielen auf den Kaukasus - genauer: auf Georgien. Unvorbereitet traf die Meldung {\"u}ber den Krieg im Kaukasus aber nur diejenigen, die glaubten, die „eingefrorenen Konflikte" im S{\"u}den des Gebirgszuges seien beigelegt. Seit den Kriegen um die „abtr{\"u}nnigen Teilrepubliken" Georgiens, S{\"u}dossetien und Abchasien, in den fr{\"u}hen 1990er Jahren sind diese jedoch nie zur Ruhe gekommen.},
  language  = {de}
}
@misc{OPUS4-2607,
  title     = {Blattgold : Kaukasisches Brennen},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-27830},
  year      = {2009},
  language  = {de}
}
@misc{KlieglMassonRichter2009,
  author    = {Kliegl, Reinhold and Masson, Michael E. J. and Richter, Eike M.},
  title     = {A linear mixed model analysis of masked repetition priming},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-57073},
  year      = {2009},
  abstract  = {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.},
  language  = {en}
}
@misc{DimigenValsecchiSommeretal.2009,
  author    = {Dimigen, Olaf and Valsecchi, Matteo and Sommer, Werner and Kliegl, Reinhold},
  title     = {Human Microsaccade-Related Visual Brain Responses},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-56923},
  year      = {2009},
  abstract  = {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.},
  language  = {en}
}
@misc{Arnold2009,
  author    = {Arnold, Hans},
  title     = {Change? : Zur Pr{\"a}sidentschaft von Barack Obama},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-27810},
  year      = {2009},
  abstract  = {Wie best{\"a}ndig ist der Mythos „Barack Obama"? Klar ist: Der neue Pr{\"a}sident tritt ein schweres Erbe an. Herausforderungen wie die Wirtschaftskrise, schwierige außen- und sicherheitspolitische Gegebenheiten und die Beziehungen zu Russland warten auf ihn. Der Autor, ein exzellenter Kenner der USA und ehemaliger Diplomat, beleuchtet die Situation der Vereinigten Staaten nach der Wahl.},
  language  = {de}
}
@misc{ValsecchiDimigenKliegletal.2009,
  author    = {Valsecchi, Matteo and Dimigen, Olaf and Kliegl, Reinhold and Sommer, Werner and Turatto, Massimo},
  title     = {Microsaccadic Inhibition and P300 Enhancement in a Visual Oddball Task},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-57170},
  year      = {2009},
  abstract  = {It has recently been demonstrated that the presentation of a rare target in a visual oddball paradigm induces a prolonged inhibition of microsaccades. In the field of electrophysiology, the amplitude of the P300 component in event-related potentials (ERP) has been shown to be sensitive to the stimulus category (target vs. non target) of the eliciting stimulus, its overall probability, and the preceding stimulus sequence. In the present study we further specify the functional underpinnings of the prolonged microsaccadic inhibition in the visual oddball task, showing that the stimulus category, the frequency of a stimulus and the preceding stimulus sequence influence microsaccade rate. Furthermore, by co-recording ERPs and eye-movements, we were able to demonstrate that, despite being largely sensitive to the same experimental manipulation, the amplitude of P300 and the microsaccadic inhibition predict each other very weakly, and thus constitute two independent measures of the brain's response to rare targets in the visual oddball paradigm.},
  language  = {en}
}