Sports trainers have recently shown increasing interest in innovative methods, including transcranial electric stimulation, to enhance motor performance and boost the acquisition of new skills during training. However, studies on the effectiveness of these tools on fast visuomotor learning and brain activity are still limited. In this randomized single-blind, sham-controlled, between-subjects study, we investigated whether a single training session, either coupled or not with 2 mA online high-frequency transcranial random noise stimulation (hf-tRNS) over the bilateral primary motor cortex (M1), would affect dart-throwing performance (i.
View Article and Find Full Text PDFBackground: Anodal transcranial direct current stimulation (tDCS) over the right dorsolateral prefrontal cortex (DLPFC) has shown to have effects on different domains of cognition yet there is a gap in the literature regarding effects on reflective thinking performance.
Objective: The current study investigated if single session and repeated anodal tDCS over the right DLPFC induces effects on judgment and decision-making performance and whether these are linked to working memory (updating) performance or cognitive inhibition.
Methods: Participants received anodal tDCS over the right DLPFC once (plus sham tDCS in a second session) or twice (24 h apart).
Violence against women is a significant public health concern, with femicide as its most extreme manifestation. This crime is often perpetrated by current or former intimate partners, thus taking the name of intimate partner femicide (IPF). Although international comparisons are essential for prevention policies, cross-country comparative studies are scarce in this context.
View Article and Find Full Text PDFBackground And Aim: This case involves a 20-year-old man with prior hallucinogen-use experience, who sniffed an unknown amount of dipropyltryptamine in an apartment. Dipropyltryptamine, a hallucinogenic compound belonging to the tryptamine class is recognized for inducing effects similar to dimethyltryptamine (DMT) but with a longer duration. Ten to fifteen minutes later he experienced visual hallucinations, followed by increasing apathy.
View Article and Find Full Text PDFIn contrast to gunshot wounds in skin and bone, the medico-legal literature pays little attention to the appearance of bullet penetration sites in abdominal organs. It was only in 1983 that Metter and Schulz published an article entitled "Morphological features of gunshot wounds in the liver and spleen." According to their observations, the organs in question showed stellate tears at the bullet penetration sites resembling skin wounds from contact shots to body regions having a bony support.
View Article and Find Full Text PDFFood intake is regulated by internal state. This function is mediated by hormones and neuropeptides, which are best characterized in popular model species. However, the evolutionary origins of such feeding-regulating neuropeptides are poorly understood.
View Article and Find Full Text PDFAlthough decapitation is a well-known traumatic mechanism in road traffic deaths, incomplete decapitation of a motorcyclist with exenteration of the brain has not yet been reported in the forensic literature in a victim run over by a vehicle. This paper deals with an autopsy case of a 69-year-old motorcyclist, who had been run over by a semitrailer, as a result of which flattening of the head with extrusion of the brain and incomplete decapitation occurred at the level of the fourth cervical vertebra. This constellation allows to define a special mechanism of accident-related decapitation.
View Article and Find Full Text PDFThe use of non-prescribed opioid substitution drugs is a serious public health problem, involving general population as well as vulnerable populations such as prisoners. The estimation of the prevalence of opioid substitution drug misuse in prisoners is crucial to suggest strategies to contrast this phenomenon and reduce the associated morbidity and mortality. The present study aimed to provide an objective estimation of the prevalence of illicit use of methadone and buprenorphine in two German prisons.
View Article and Find Full Text PDFThe extent of freeze dehydration of mesophyll cells in response to extracellular ice varies from supercooling to severe freezing cytorrhysis. The structural factors involved are poorly understood. In a comparison of mesophyll cells of 11 species, the factors "cell wall", "cellular" and "tissue" traits were investigated.
View Article and Find Full Text PDFThe aim of the present study was to establish whether the size (diameter and area) of bullet entrance holes in skin varies between distant shots to the anterior and posterior trunk, respectively, when using the same ammunition (in concreto pistol cartridges 9 mm Luger). For that purpose, specimens of porcine skin from the belly region and the back were taken (10 samples each) and shot at from a distance of 1.6 m.
View Article and Find Full Text PDFThe attempts to mitigate the unprecedented health, economic, and social disruptions caused by the COVID-19 pandemic are largely dependent on establishing compliance to behavioral guidelines and rules that reduce the risk of infection. Here, by conducting an online survey that tested participants' knowledge about the disease and measured demographic, attitudinal, and cognitive variables, we identify predictors of self-reported social distancing and hygiene behavior. To investigate the cognitive processes underlying health-prevention behavior in the pandemic, we co-opted the dual-process model of thinking to measure participants' propensities for automatic and intuitive thinking vs.
View Article and Find Full Text PDFCrossbows are ancient distance weapons, which in modern times have been largely replaced by guns. Nowadays, they are used for target shooting and in some countries also for hunting. Bolts/arrows fired from a crossbow have a rather low initial velocity but a high penetration capacity comparable to bullets shot from firearms.
View Article and Find Full Text PDFNeurophysiological evidence suggests that face and object recognition relies on the coordinated activity of neural populations (i.e., neural oscillations) in the gamma-band (>30 Hz) range over the occipito-temporal cortex.
View Article and Find Full Text PDFPhilos Trans R Soc Lond B Biol Sci
December 2019
Previous research has indicated a potential link between mental imagery and synaesthesia. However, these findings are mainly based on imagery self-report measures and recruitment of self-selected synaesthetes. To avoid issues of self-selection and demand effects, we recruited participants from the general population, rather than synaesthetes specifically, and used colour-picking consistency tests for letters and numbers to assess a 'synaesthete-like' experience.
View Article and Find Full Text PDFBackground And Objectives: Treatment models developed for substance use disorders (SUDs) are often applied to behavioral addictions (BAs), even though the correspondence between these forms of addiction is unclear. This is also the case for noninvasive brain stimulation (NIBS) techniques being investigated as potential treatment interventions for SUDs and BAs.
Objectives: to contribute to the development of more effective NIBS protocols for BAs.
Previous research has shown that dehydration and water supplementation affect mood and cognitive performance in both adults and children on a variety of tasks that assess memory, attention, executive function, and speeded responses. Given the varied effects of water on cognition, this study explored potential effects of water supplementation, hydration status, and thirst on thinking and decision-making tasks. 29 adult participants undertook a battery of cognitive tests on two separate occasions after having fasted from the previous night.
View Article and Find Full Text PDFParticipants made speeded categorization decisions regarding a famous person (politician or film star) accompanied by a peripheral distracter face (either the same or from the opposite category). The first experiment found that processing a peripheral distracter face is independent of load when the search set contains name strings. The search set in the second experiment consisted of faces.
View Article and Find Full Text PDFBackground: Accounts of cognitive processes in judgment and decision-making are frequently based on a dual-process framework, which reflects two qualitatively different types of processing: intuitive (Type 1) and analytical (Type 2) processes.
Objective: The present study investigated the effects of bilateral transcranial direct current stimulation (tDCS) to the dorsolateral prefrontal cortex (DLPFC) on judgment and decision-making performance.
Methods: Participants received anodal tDCS stimulation to the right DLPFC, left DLPFC or sham.
Relationships between sleep, screen-based media, and ADHD symptomatology were investigated using a case- and community-based approach. : = 357 healthy and = 61 children with ADHD (12.72 ± 2.
View Article and Find Full Text PDFTo survive, all animals must find, inspect, and ingest food. Behavioral coordination and control of feeding is therefore a challenge that animals must face. Here, we focus on how the gustatory system guides the precise execution of behavioral sequences that promote ingestion and suppresses competing behaviors.
View Article and Find Full Text PDFMachine vision systems have been widely used for image analysis, especially that which is beyond human ability. In biology, studies of behavior help scientists to understand the relationship between sensory stimuli and animal responses. This typically requires the analysis and quantification of animal locomotion.
View Article and Find Full Text PDFFront Psychol
September 2016
Previous research using flanker paradigms suggests that peripheral distracter faces are automatically processed when participants have to classify a single central familiar target face. These distracter interference effects disappear when the central task contains additional anonymous (non-target) faces that load the search for the face target, but not when the central task contains additional non-face stimuli, suggesting there are face-specific capacity limits in visual processing. Here we tested whether manipulating the format of non-target faces in the search task affected face-specific capacity limits.
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