Some reports have outlined many different treatment strategies for superior oblique myokymia (SOM) that attempt to reduce or eliminate patients' symptoms of monocular oscillopsia and/or diplopia. Most treatment strategies have focused solely on oral medications or invasive surgery. The following is a current and critical review of SOM along with its clinical findings/symptoms, demographics, the...

Cortical interneurons are classified into several subtypes that contribute to cortical oscillatory activity. Parvalbumin (PV)-expressing cells, a type of inhibitory interneuron, are involved in the gamma oscillations of local field potentials (LFPs). Under ketamine-xylazine anesthesia or sleep, mammalian cortical circuits exhibit slow oscillations in which the active-up state and silent-down st...

In many terrestrial ecosystems plant productivity is limited by the availability of mineral nitrogen, which is produced by soil microbial transformations of organic N in soil organic matter (SOM-N). Mineral N availability results from two opposing processes, 1) gross mineral N production (gross ammonification/ gross nitrification) and 2) microbial N immobilization. These processes can be influe...

Vad kännetecknar en text av god kvalitet och hur starkt påverkar textens utformning, sammansättning och uppbyggnad ifall en avhandling eller rapport uppfattas som högkvalitativ? Dessa frågor har aktualiserats med anledning av Högskoleverkets utvärderingssystem av utbildningar, som lägger stor vikt vid skriftliga rapporter producerade i samband med examensarbeten. Detta nummer av Lärande i LTH h...

Both the Self-Organizing Map (SOM) and fuzzy ARTMAP neural network are trained based upon the competitive mechanism and use the “winner-take-all” rule. Previous studies developed soft classification algorithms for the SOM. This paper introduces the idea and proposes non-parametric measures for the fuzzy ARTMAP computational neural networks to handle spatial uncertainty in remotely sensed imager...

Yores hensigt vil her va::re at konstruere dele af et direkte afbildende sprog, som vil sa::tte os i stand til at repra::sentere virkelighedens mest generelle strukturer. Vi skal ikke her benytte os af de logiske standard-behandlinger af epistemiske tilstande, der sa::dvanligvis opfatter disse som domme (propositioner). Vi vil i stedet genoptage den ikke mindre a::rva::rdige, men nutildags noge...

This paper modified the mechanism of weight adjusting of the Self-Organizing Mapping network (SOM) for solving the problems of topology preserving and clarifying boundary of clustering graph for the clustering analysis. The modified SOM is named the Multiple Clustering Centers SOM (MCC-SOM). The MCC-SOM changed the competitive learning mechanism of “winner takes all” to allow the more one clust...

Microbial degradation of soil organic matter (SOM) is a key process for terrestrial carbon cycling, although the molecular details of these transformations remain unclear. This study reports the application of ultrahigh resolution mass spectrometry to profile the molecular composition of SOM and its degradation during a simulated warming experiment. A soil sample, collected near Barrow, Alaska,...

[1] Despite its wide applications as a tool for feature extraction, the Self-Organizing Map (SOM) remains a black box to most meteorologists and oceanographers. This paper evaluates the feature extraction performance of the SOM by using artificial data representative of known patterns. The SOM is shown to extract the patterns of a linear progressive sine wave. Sensitivity studies are performed ...

We investigated actions of somatostatin (Som) on voltagegated calcium channels in acutely isolated rat amygdaloid neurons. Somatostatin caused a dose-dependent inhibition of the high voltage-activated (HVA) Ca2+ current, with little or no effect on the low voltage-activated (LVA) current. Nifedipine (2-10 microM) reduced the peak current by approximately 15% without reducing inhibition of curre...