Correction to: The development of dynamic perceptual simulations during sentence comprehension

Cognitive Processing - A correction to this paper has been published: https://doi.org/10.1007/s10339-021-01027-4     

A video game-based investigation of power stress moderators in children

Motivation and Emotion - In this paper, we examine the relationship between the implicit power motive (nPow) and power stress in primary school children under the additional consideration of...     

Somebody hit the button! The implicit power motive and the frequency of verbal persuasion behavior in children

Motivation and Emotion - We examined the relationship between the implicit power motive (nPow) and the frequency of verbal persuasion behavior (VPB) in dyads of children, while they negotiated a...     

Key Word Index to Volume 52

Other Index

Key Word Index to Volume 52     

Synaptic Reliability Correlates with Reduced Susceptibility to Synaptic Potentiation by Brain-Derived Neurotrophic Factor

Recent studies have implicated brain-derived neurotrophic factor (BDNF) in use-dependent modification of hippocampal synapses. BDNF can rapidly potentiate synaptic transmission at glutamatergic synapses by enhancing transmitter release. Using simultaneous perforated patch recording from pairs and triplets of glutamatergic hippocampal neurons, we have examined how the initial state of the glutamatergic synapse determines its susceptibility to synaptic modification by BDNF. We found that the degree of synaptic potentiation by BDNF depends on the initial reliability and strength of the synapse: Relatively weak connections were strongly potentiated, whereas the effect was markedly reduced at stronger synapses. The degree of BDNF-induced potentiation strongly correlated with the initial coefficient of variation (CV) of the amplitude of excitatory postsynaptic currents (EPSCs) and inversely correlated with the initial paired–pulse facilitation, suggesting that synapses with lower release probability (P_r) are more susceptible to the action of BDNF. To determine whether saturation of P_r could have masked the potentiation effect of BDNF in the stronger synapses, we lowered the initial P_r either by reducing the extracellular Ca²⁺ concentration ([Ca²⁺]_o) or by bath application of adenosine. Synapses that were initially strong remained unaffected by BDNF under these conditions of reduced P_r. Thus, the lack of BDNF effect on synaptic efficacy cannot simply be accounted for by saturation of P_r, but rather may be due to intrinsic changes associated with synaptic maturation that might covary with P_r. Finally, the dependence on initial synaptic strength was also found for divergent outputs of the same presynaptic neuron, suggesting that synaptic terminals with different degrees of responsiveness to BDNF can coexist within in the same neuron.     

Wissenschaftstheorie in ?sterreich seit den 1990er Jahren im internationalen Vergleich: Eine Bestandsaufnahme

Based on two previous reports (1970 and 1993), the development of philosophy of science in Austria (covering the history and sociology of the sciences) since 1991 is described and analyzed with regard to its manifestation and institutionalization at the universities (mostly placed at the departments of philosophy in Graz, Innsbruck, Klagenfurt, Linz, Salzburg, and Vienna). Some extra-university societies and institutes are included as well as related journals and book series in this research field, which has changed significantly within the last two decades. A sort of disruption of the earlier strong presence of philosophy of science in the capitals of the Austrian provinces occurred and at the same time a late revival took place in Vienna after the forced migration of the Vienna Circle since the 1930s and long aftermath. One additional result of this account is the extension of the traditional core discipline (analytic) ??logic and philosophy of science?? to the historical and sociological domain of all sciences (including the basic natural sciences and the humanities, as well as the cultural and social sciences). A list of related and selected publications on philosophy of science in Austria is appended as complementary biographical information. A list of Austrian institutions in the philosophy of science with some mission statements complements this survey, which is certainly not complete for practical and systematic reasons.