Photo A. The six-meter Blockbuster. A lthough I enjoy ragchewing, DX-chasing, contesting, satellite work, and just about every conceivable aspect of amateur radio, the activity I enjoy most of all is home-brewing, especially home-brewing with a purpose. This article describes a reasonably ambitious effort which was precipitated by a very distinct purpose: I wanted to become more competitive in ...

UNLABELLED Behavioral states are commonly considered global phenomena with homogeneous neural determinants. However, recent studies indicate that behavioral states modulate spiking activity with neuron-level specificity as a function of brain area, neuronal subtype, and preceding history. Although functional connectivity also strongly depends on behavioral state at a mesoscopic level and is glo...

UNLABELLED The parasubiculum is a major input structure of layer 2 of medial entorhinal cortex, where most grid cells are found. Here we investigated parasubicular circuits of the rat by anatomical analysis combined with juxtacellular recording/labeling and tetrode recordings during spatial exploration. In tangential sections, the parasubiculum appears as a linear structure flanking the medial ...

Along the last 25 years, INFN-LNS has gained a relevant role in R&D of plasma-based ion sources. The laboratory is currently involved in the construction of the Proton Source and Low Energy Beam Transport (LEBT) line for the European Spallation Source. ESS – based on a 2.0 GeV, 62.5 mA proton accelerator for neutron production – will be a fundamental instrument for research and applications. Th...

Sequential motor skills may be encoded by feedforward networks that 33 consist of groups of neurons that fire in sequence (Abeles 1991; Long et al. 2010). 34 However, there has been no evidence of an anatomical map of activation sequence 35 in motor control circuits, which would be potentially detectable as directed 36 functional connectivity of co-active neuron groups. The proposed pattern 37 ...

The neocortex, hippocampus, and several other brain regions contain populations of excitatory principal cells with recurrent connections and strong interactions with local inhibitory interneurons. To improve our understanding of the interactions between these cell types, we modeled the dynamical behavior of this type of network, including external inputs. A surprising nding was that increasing ...

Following a brief historical overview on the origin and the evolution of Schottky noise we discuss applications in the field of beam diagnostics in particle accelerators. A very important aspect of Schottky diagnostics is the fact that it is a non perturbing method. Essentially statistics based, it permits to extract beam relevant information from rms (root mean square) noise related to the mov...

The neural pathways by which information about the acoustic world reaches the auditory cortex are well characterized, but how auditory representations are transformed intomotor commands is not known. Here we use a perceptual decision-making task in rats to study this transformation. We demonstrate the role of corticostriatal projection neurons in auditory decisions by manipulating the activity ...

Introduction Assessing the electrical performance of cell populations can reveal their functions only partially. To discover the underlying mechanisms it is important to examine how they communicate with other brain regions, which can be achieved by implanting multiple recording devices to all possible cooperating areas. Multisite implantations are limited by available space in small animals, t...