• Publications
  • Influence
A New ANEW: Evaluation of a Word List for Sentiment Analysis in Microblogs
Sentiment analysis of microblogs such as Twitter has recently gained a fair amount of attention. Expand
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Modeling the hemodynamic response in fMRI using smooth FIR filters
We introduce a semi-parametric hemodynamic response function based on finite impulse response filters and perform a full analysis of data acquired during an experiment involving visual stimulation. Expand
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Good Friends, Bad News - Affect and Virality in Twitter
The link between affect, defined as the capacity for sentimental arousal on the part of a message, and virality is of significant theoretical and practical importance for viral marketing. Expand
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On Clustering fMRI Time Series
Analysis of fMRI time series is often performed by extracting one or more parameters for the individual voxels. Methods based, e.g., on various statistical tests are then used to yield parametersExpand
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The Cerebellum
The cerebellum (Latin for “little brain”) is a region of the brain that plays an important role in motor control. It may also be involved in some cognitive functions such as attention and language,Expand
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Strategies of Legitimacy Through Social Media: The Networked Strategy
How can corporations develop legitimacy when coping with stakeholders who have multiple, often conflicting sustainable development (SD) agendas? We address this question by conducting an in‐depthExpand
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Generalizable Patterns in Neuroimaging: How Many Principal Components?
Generalization can be defined quantitatively and can be used to assess the performance of principal component analysis (PCA). The generalizability of PCA depends on the number of principal componentsExpand
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Plurality and Resemblance in fMRI Data Analysis
We apply nine analytic methods employed currently in imaging neuroscience to simulated and actual BOLD fMRI signals and compare their performances under each signal type. Starting with baseline timeExpand
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The Brede database: a small database for functional neuroimaging
We describe the “Brede” neuroinformatics database that provides data for novel information retrieval techniques and automated meta-analyses. Expand
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Seasonal Changes in Brain Serotonin Transporter Binding in Short Serotonin Transporter Linked Polymorphic Region-Allele Carriers but Not in Long-Allele Homozygotes
BACKGROUND A polymorphism in the promoter region of the serotonin transporter gene (5-HTTLPR) has been associated with seasonality both in patients with seasonal affective disorder and in the generalExpand
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