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Asociația Ad Astra a anunțat câștigătorii Premiilor Ad Astra 2022: http://premii.ad-astra.ro/. Proiectul și-a propus identificarea și popularizarea modelelor de succes, a rezultatelor excepționale ale cercetătorilor români din țară și din afara ei.
Publicatii proprii
Declining Genetic Diversity and Increasing Genetic Isolation toward the Range Periphery of Stipa pennata, a Eurasian Feather Grass
A common assumption in ecology and evolutionary biology is that genetic diversity declines and differentiation increases toward the edge of a species’ geographic range, where populations tend to be smaller and more isolated. We tested these predictions in a characteristic Eurasian steppe plant, Stipa pennata, by inspecting 230 AFLP bands in 26 populations (345 individuals) along a 3300-km longitudinal gradient from the range core, in Russia, to
Read moreLiquidity Shocks and the Supply of Credit After the 2007-08 Crisis
We examine the impact of heightened liquidity risk in bank funding markets during the 2007-08 subprime crisis on the supply of credit to firms internationally. Our sample comprises almost 800 banks lending in the syndicated loan market to borrowers from 48 advanced and emerging market economies. To control for simultaneous changes in demand, we relate within-borrower changes in lending from multiple banks to banks' exposure to liquidity risk. To
Read moreSocial perception of faces in acquired prosopagnosia
Facial trait perception is a crucial element of social interactions, but its relationship to other aspects of face perception such as identity and expression is unclear. Some researchers claim trait perception is by-product of mechanisms responsible for expression perception (Said, Sebe & Todorov, 2009), while others argue that trait perception is influenced by aspects unrelated to expression such as facial-width (Stirratt & Perrett, 2010) and self-resemblance
Read moreUnfakeable Facial Configurations Affect Strategic Choices in Trust Games with or without Information about Past Behavior
Many human interactions are built on trust, so widespread confidence in first impressions generally favors individuals with trustworthy-looking appearances. However, few studies have explicitly examined: 1) the contribution of unfakeable facial features to trust-based decisions, and 2) how these cues are integrated with information about past behavior. Using highly controlled stimuli and an improved experimental procedure, we show that unfakeable
Read moreAcquired prosopagnosia with spared within-class object recognition but impaired recognition of degraded basic-level objects
We present a new case of acquired prosopagnosia resulting from extensive lesions predominantly in the right occipitotemporal cortex. Functional brain imaging revealed atypical activation of all core face areas in the right hemisphere, with reduced signal difference between faces and objects compared to controls. In contrast, Herschel’s lateral occipital complex showed normal activation to objects. Behaviourally, Herschel is severely impaired with
Read moreTimothy syndrome is associated with activity-dependent dendritic retraction in rodent and human neurons
L-type voltage gated calcium channels have an important role in neuronal development by promoting dendritic growth and arborization. A point mutation in the gene encoding CaV1.2 causes Timothy syndrome, a neurodevelopmental disorder associated with autism spectrum disorders (ASDs). We report that channels with the Timothy syndrome alteration cause activity-dependent dendrite retraction in rat and mouse neurons and in induced pluripotent stem cell
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