• Publications
  • Influence
Topographic segregation and convergence of verbal, object, shape and spatial working memory in humans
This functional magnetic resonance imaging study investigates commonalties and differences in working memory (WM) processes employing different types of stimuli. We specifically sought toExpand
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Effects of a 902 MHz mobile phone on cerebral blood flow in humans: a PET study
Fourteen healthy right-handed subjects were scanned using PET with a [15O]water tracer during exposure to electromagnetic field (EMF) emitted by a mobile phone and a sham-exposure under double-blindExpand
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Involvement of the cerebellar cortex and nuclei in verbal and visuospatial working memory: A 7T fMRI study
The first aim of the present study was to extend previous findings of similar cerebellar cortical areas being involved in verbal and spatial n-back working memory to the level of the cerebellarExpand
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  • Open Access
Assessment of Large-Vessel Involvement in Giant Cell Arteritis with 18F-FDG PET: Introducing an ROC-Analysis–Based Cutoff Ratio
In the diagnosis of giant cell arteritis (GCA) with aortic involvement, 18F-FDG PET has been demonstrated to be a powerful tool. No other imaging method is able to directly detect acute inflammationExpand
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The motion aftereffect: more than area V5/MT?: Evidence from 15O-butanol PET studies
The motion aftereffect is a perceptual phenomenon which has been extensively investigated both psychologically and physiologically. Neuroimaging techniques have recently demonstrated that area V5/MTExpand
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Evidence of a modality-dependent role of the cerebellum in working memory? An fMRI study comparing verbal and abstract n-back tasks
In working memory (WM), functional imaging studies demonstrate cerebellar involvement indicating a cognitive role of the cerebellum. These cognitive contributions were predominantly interpreted asExpand
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  • Open Access
Cerebellar fMRI Activation Increases with Increasing Working Memory Demands
The aim of the present study was to explore cerebellar contributions to the central executive in n-back working memory tasks using 7-T functional magnetic imaging (fMRI). We hypothesized thatExpand
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Cerebral haemodynamics during hypo- and hypercapnia: determination with simultaneous 15O-butanol-PET and transcranial Doppler sonography.
AIM Transcranial Doppler sonography (TCD) is increasingly used in cerebrovascular disease for monitoring brain perfusion. It allows estimation of cerebral blood flow (CBF) by the measurement ofExpand
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Increased Activation of the Supragenual Anterior Cingulate Cortex during Visual Emotional Processing in Male Subjects with High Degrees of Alexithymia: An Event-Related fMRI Study
Background: One of the most prominent neurobiological models of alexithymia assumes an altered function of the anterior cingulate cortex (ACC) as the crucial neural correlate of alexithymia. So farExpand
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  • Open Access
Alexithymia in healthy young men: a voxel-based morphometric study.
BACKGROUND Alexithymia is a personality construct predominately associated with an impaired ability to identify and communicate emotions. Functional imaging studies showed that an altered function ofExpand
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