Achim Stephan

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BACKGROUND Neuroimaging has demonstrated that voluntary emotion regulation is effective in reducing amygdala activation to aversive stimuli during regulation. However, to date little is known about the sustainability of these neural effects once active emotion regulation has been terminated. METHODOLOGY/PRINCIPAL FINDINGS We addressed this issue by means(More)
We elaborate and defend the claim that human affective states ("feelings") are, among other things, self-disclosing. We will show why affective intentionality has to be considered in order to understand human self-consciousness. One specific class of affective states, so-called existential feelings, although often neglected in philosophical treatments of(More)
Several theories of emergence will be distinguished. In particular, these are synchronic, diachronic, and weak versions of emergence. While the weaker theories are compatible with property reductionism, synchronic emergentism and strong versions of diachronic emergentism are not. Synchronic emergentism is of particular interest for the discussion of(More)
Several strategies have been developed for the production of peptide nucleic acid (PNA) microarrays by parallel probe synthesis and selective coupling of full-length molecules. Such microarrays were used for direct detection of the hybridisation of unlabelled DNA by time-of-flight secondary ion mass spectrometry. PNAs were synthesised by an automated(More)
The Wnt/β-catenin signalling is aberrantly activated in primary B cell chronic lymphocytic leukaemia (CLL). Epigenetic silencing of pathway inhibitor genes may be a mechanism for its activation. In this study, we investigated systematically and quantitatively the methylation status of 12 Wnt/β-catenin pathway inhibitor genes – CDH1, DACT1, DKK1, DKK2, DKK3,(More)
In recent years, the use of microarray technologies for the analysis of nucleic acids has become routine, and much more is still to come. Because of the special features of PNA-DNA interaction, the use of PNA-oligomers as chip-bound receptors could be advantageous for some applications. In this chapter, procedures for the production of PNA-microarrays are(More)
Achim Stephan Institut für Philosophie der Universität Karlsruhe (TH), Postfach 6980, D-76128 Karlsruhe at present: Hanse-Wissenschaftskolleg, Fischstr. 31, D-27749 Delmenhorst Z. Naturforsch. 53c, 639-656 (1998); received April 20, 1998 Emergence, Reduction, Connectionism, Qualia, Synergetics In different disciplines such as philosophy of mind, dynamical(More)
Often, the behavior of animals can be better explained and predicted, it seems, if we ascribe the capacity to have beliefs, intentions, and concepts to them. Whether we really can do so, however, is a debated issue. Particularly, Donald Davidson maintains that there is no basis in fact for ascribing propositional attitudes or concepts to animals. I will(More)