Serotonin neurons originate from the brainstem raphe nuclei and innervate the entire brain to regulate mood, emotion, sleep, appetite and aggression. Previous electron microscopy (EM) studies have revealed that 5-HT boutons directly contact several neuronal populations via asymmetrical (excitatory) or symmetrical (inhibitory) synapses. Additionally, 5-HT boutons sometimes form “triads” with the...

The purpose of this study was to provide a thorough description of lumbar surface integrated electromyography (EMG) in pain-free normals during a standardized assessment protocol of static isometric and unresisted dynamic tasks. It has been proposed that in pain-free normals, symmetrical tasks that bend the trunk forward or extend the trunk backward produce symmetrical paraspinal EMG activity, ...

This study examines the links between human perceptions, cognitive biases and neural processing of symmetrical stimuli. While preferences for symmetry have largely been examined in the context of disorders such as obsessive-compulsive disorder and autism spectrum disorders, we examine various these phenomena in non-clinical subjects and suggest that such preferences are distributed throughout t...

With targets aligned in the midsagittal plane, six of seven subjects tested were often able to make smooth symmetrical convergence movements in which no detectable saccade occurred during the initial 300 msec of the eye movement (12-95% of their trials). With targets located in a plane parallel to, but appreciably to one side of the midsagittal plane, those same six subjects were also often abl...

ion Non-Verbal The ability to balance at least two of the symmetrical beams, but no more than one of the asymmetrical beams. All beams are placed on the fulcrum at their geometric centre. No explanations are given and no relevant variables are mentioned. This is distinguished from the Implicit level by the inability to balance the asymmetrical beams. (This level corresponds to Level E1 in Karmi...

Carbon nanotubes (CNTs) have been studied extensively utilizing the catalytic chemical vapor deposition (CCVD) process for several decades. CCVD is seen to a better degree of control and scalability. CNTs proved be useful in single-molecule transistors, Scanning Electron Microscope (SEM) tips, gas electrochemical storage, electron field emitting flat panel displays, sensors. This paper summariz...

In some short circuit studies, the X/R ratio is ignored when comparing the short circuit rating of the equipment to the available fault current at the equipment. What is not always realized is that when lowvoltage gear is tested, it is tested at a certain X/R ratio. The X/R ratio is important because it determines the peak asymmetrical fault current. The asymmetrical fault current can be much l...

Hierarchical VOOH hollow spheres with low crystallinity composed of nanoparticles were prepared by a facile and template-free method, which involved a precipitation of precursor microspheres in aqueous solution at room temperature and subsequent hydrothermal reaction. Quasi-solid-state symmetric and asymmetric supercapacitor (SSC and ASC) devices were fabricated using hierarchical VOOH hollow s...

The two West-Germanic languages Dutch and Afrikaans are so closely related that they can be expected to be mutually intelligible to a large extent. The present investigation focuses on written language. Comprehension was established by means of cloze tests on the basis of two newspaper articles. Results suggest that it is easier for Dutch subjects to understand written Afrikaans than it is for ...

To explore the effects of qualitative or quantitative changes in walking on motor cortical excitability, a transcranial magnetic stimulation procedure was used to examine the alterations of motor-evoked potential (MEP) amplitude following walking. Eight healthy participants completed a series of two walking tasks on a treadmill at 2 km/h. The ratio of the left stance duration to the right stanc...