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https://www.readbyqxmd.com/read/28734241/entrapment-perceived-burdensomeness-and-thwarted-belongingness-as-predictors-of-suicide-ideation
#1
Thomas Forkmann, Tobias Teismann
The Integrated Motivational-Volitional (IMV) Model of suicide posits that perceived burdensomeness and thwarted belongingness moderate the association between perceptions of entrapment and suicide ideation. However, the proposed moderation is yet to be tested. Possible moderator effects were investigated in an online sample (N = 480; 74% female; Mage = 28.5, SDage = 11.1). Entrapment and perceived burdensomeness predicted suicide ideation. However, neither perceived burdensomeness nor thwarted belongingness moderated the association between entrapment and suicide ideation...
July 16, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28728441/ability-of-pulmonary-function-decline-to-predict-death-in-amyotrophic-lateral-sclerosis-patients
#2
Irina Enache, Cristina Pistea, Marie Fleury, Mickael Schaeffer, Monique Oswald-Mammosser, Andoni Echaniz-Laguna, Christine Tranchant, Nicolas Meyer, Anne Charloux
OBJECTIVES: Objectives were to evaluate the relative risk of death associated with lung function decline in patients with amyotrophic lateral sclerosis (ALS), and to examine the ability of ALS patients to perform volitional pulmonary function tests (PFTs). METHODS: The PFTs of 256 consecutive patients referred to the Strasbourg University Hospital ALS Centre over an eight-year period were reviewed. Slow vital capacity (VC), maximal inspiratory and expiratory pressures (MIP, MEP), sniff nasal inspiratory pressure (SNIP), and peak cough flow (PCF) were performed at diagnosis and then every four months...
July 20, 2017: Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration
https://www.readbyqxmd.com/read/28726470/child-sun-safety-application-of-an-integrated-behavior-change-model
#3
Kyra Hamilton, Aaron Kirkpatrick, Amanda Rebar, Martin S Hagger
OBJECTIVE: Childhood sun exposure increases risk of skin cancer in later life. Parents of young children play an important role in minimizing childhood sun exposure. The aim of the current study was to identify the motivational, volitional, and implicit antecedents of parents' sun-protective behaviors based on an Integrated Behavior Change model. METHOD: Parents (N = 373) of 2- to 5-year-old children self-reported their intentions, attitudes, subjective norm, perceived behavioral control, autonomous and controlled motivation, action plans, habit, and past behaviors with respect to sun-protective behaviors for their children...
July 20, 2017: Health Psychology: Official Journal of the Division of Health Psychology, American Psychological Association
https://www.readbyqxmd.com/read/28715529/changes-in-peak-airflow-measurement-during-maximal-cough-after-vocal-fold-augmentation-in-patients-with-glottic-insufficiency
#4
Gregory R Dion, Efstratios Achlatis, Stephanie Teng, Yixin Fang, Michael Persky, Ryan C Branski, Milan R Amin
Importance: Compromised cough effectiveness is correlated with dysphagia and aspiration. Glottic insufficiency likely yields decreased cough strength and effectiveness. Although vocal fold augmentation favorably affects voice and likely improves cough strength, few data exist to support this hypothesis. Objective: To assess whether vocal fold augmentation improves peak airflow measurements during maximal-effort cough following augmentation. Setting, Design, Participants: This case series study was conducted in a tertiary, academic laryngology clinic...
July 13, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28713466/intra-subject-variability-of-5-km-time-trial-performance-completed-by-competitive-trained-runners
#5
James Fisher, Thomas Clark, Katherine Newman-Judd, Josh Arnold, James Steele
Time-trials represent an ecologically valid approach to assessment of endurance performance. Such information is useful in the application of testing protocols and estimation of sample sizes required for research/magnitude based inference methods. The present study aimed to investigate the intra-subject variability of 5 km time-trial running performance in trained runners. Six competitive trained male runners (age = 33.8 ± 10.1 years; stature = 1.78 ± 0.01 m; body mass = 69.0 ± 10.4 kg, [Formula: see text]O2max = 62...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28712015/mechanisms-contributing-to-reduced-knee-stiffness-during-movement
#6
Daniel Ludvig, Maciej Plocharski, Piotr Plocharski, Eric J Perreault
The ability to modulate the mechanical properties of our limbs contributes to our ability to interact with the physical world in a consistent and predictable manner. An individual joint's contributions to whole limb mechanics can be quantified by its joint impedance, which characterizes the torque generated about a joint in response to external perturbations of position. A number of studies have estimated joint impedance during movement and have shown that it can be much lower than it is during posture. However, the mechanisms contributing to these differences remain unknown partly because conditions known to affect impedance, including muscle activation and joint angles, have not been carefully controlled across studies...
July 15, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28704734/metacognition-of-agency-is-reduced-in-high-hypnotic-suggestibility
#7
Devin B Terhune, Love R A Hedman
A disruption in the sense of agency is the primary phenomenological feature of response to hypnotic suggestions but its cognitive basis remains elusive. Here we tested the proposal that distorted volition during response to suggestions arises from poor metacognition pertaining to the sources of one's control. Highly suggestible and control participants completed a motor task in which performance was reduced through surreptitious manipulations of cursor lag and stimuli speed. Highly suggestible participants did not differ from controls in performance or metacognition of performance, but their sense of agency was less sensitive to cursor lag manipulations, suggesting reduced awareness that their control was being manipulated...
July 10, 2017: Cognition
https://www.readbyqxmd.com/read/28702807/effect-of-rest-pause-vs-traditional-bench-press-training-on-muscle-strength-electromyography-and-lifting-volume-in-randomized-trial-protocols
#8
J Adam Korak, Max R Paquette, Justin Brooks, Dana K Fuller, John M Coons
PURPOSE: Rest-pause (4-s unloaded rest between repetitions) training effects on one repetition maximum (1 RM), lifting volume, and neural activation via electromyography (EMG) are currently vague in the literature and can benefit strength and conditioning professionals for resistance training programme design. Therefore, this study compared 1 RM, neural activation via (EMG), and volume differences between rest-pause vs. traditional resistance training. METHODS: Trained males (N = 20) were randomly assigned to either a rest-pause or a traditional training group...
July 12, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28693533/classification-complexity-in-myoelectric-pattern-recognition
#9
Niclas Nilsson, Bo Håkansson, Max Ortiz-Catalan
BACKGROUND: Limb prosthetics, exoskeletons, and neurorehabilitation devices can be intuitively controlled using myoelectric pattern recognition (MPR) to decode the subject's intended movement. In conventional MPR, descriptive electromyography (EMG) features representing the intended movement are fed into a classification algorithm. The separability of the different movements in the feature space significantly affects the classification complexity. Classification complexity estimating algorithms (CCEAs) were studied in this work in order to improve feature selection, predict MPR performance, and inform on faulty data acquisition...
July 10, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28686607/cerebellar-anodal-tdcs-increases-implicit-learning-when-strategic-re-aiming-is-suppressed-in-sensorimotor-adaptation
#10
Li-Ann Leow, Welber Marinovic, Stephan Riek, Timothy J Carroll
Neurophysiological and neuroimaging work suggests that the cerebellum is critically involved in sensorimotor adaptation. Changes in cerebellar function alter behaviour when compensating for sensorimotor perturbations, as shown by non-invasive stimulation of the cerebellum and studies involving patients with cerebellar degeneration. It is known, however, that behavioural responses to sensorimotor perturbations reflect both explicit processes (such as volitional aiming to one side of a target to counteract a rotation of visual feedback) and implicit, error-driven updating of sensorimotor maps...
2017: PloS One
https://www.readbyqxmd.com/read/28679333/volitional-trust-autonomy-satisfaction-and-engagement-at-work
#11
Marita Heyns, Sebastiaan Rothmann
This study tested a structural model that identifies the nature of relationships between trust, autonomy satisfaction, and personal engagement at work. A cross-sectional survey design with a convenience sample ( n = 252) was used. The Behavioral Trust Inventory, Work-Related Basic Need Satisfaction Scale, and Work Engagement Scale were administered. While reliance-based trust did not have a significant influence on engagement, disclosure-based trust in a focal leader was found to predict satisfaction of autonomy needs and employee engagement...
January 1, 2017: Psychological Reports
https://www.readbyqxmd.com/read/28677231/development-of-deep-and-upper-neuronal-layers-in-the-domestic-cat-sheep-and-pig-neocortex
#12
M Glatzle, M Hoops, J Kauffold, J Seeger, S A Fietz
The neocortex plays a key role in cognition, volitional motor control and sensory perception and has undergone tremendous expansion during evolution. The mature neocortex consists of radially aligned neurons that are arranged in six layers. Layers II-VI are often split into two groups: deep and upper layers, both building up the so-called cortical plate during embryonic and foetal development. So far cortical neurogenesis, including the generation of deep and upper layers, has mostly been studied in laboratory rodents and primates...
July 4, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28675376/model-based-bayesian-signal-extraction-algorithm-for-peripheral-nerves
#13
Thomas Eggers, Yazan M Dweiri, Grant McCallum, Dominique M Durand
Multi-channel cuff electrodes have recently been investigated for extracting fascicular-level motor commands from mixed neural recordings. Such signals could provide volitional, intuitive control over a robotic prosthesis for amputee patients. Recent work has demonstrated success in extracting these signals in acute and chronic preparations using spatial filtering techniques. These extracted signals, however, had low signal-to-noise ratios and thus limited their utility to binary classification. In this work a new algorithm is proposed which combines previous source localization approaches to create a model based method which operates in real time...
July 4, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28673997/endogenous-orienting-in-the-archer-fish
#14
William Saban, Liora Sekely, Raymond M Klein, Shai Gabay
The literature has long emphasized the neocortex's role in volitional processes. In this work, we examined endogenous orienting in an evolutionarily older species, the archer fish, which lacks neocortex-like cells. We used Posner's classic endogenous cuing task, in which a centrally presented, spatially informative cue is followed by a target. The fish responded to the target by shooting a stream of water at it. Interestingly, the fish demonstrated a human-like "volitional" facilitation effect: their reaction times to targets that appeared on the side indicated by the precue were faster than their reaction times to targets on the opposite side...
July 3, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28673510/eye-movements-in-essential-tremor-patients-with-parkinsonian-and-cerebellar-signs
#15
Magdalena Wójcik-Pędziwiatr, Elżbieta Mirek, Monika Rudzińska-Bar, Andrzej Szczudlik
Apart from intention tremor essential tremor (ET) patients may display other cerebellar signs, like dysmetria or tandem gait disturbances as well as parkinsonian signs like resting tremor, cogwheel sign, subtle bradykinesia. Previous reports claimed the occurrence of the eye movement abnormalities characteristic for dysfunction of cerebellar dorsal vermis in ET patients with concomitant cerebellar signs. There are no previous reports evaluating the eye movement abnormalities in ET patients with concomitant parkinsonian signs...
May 17, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28671629/motor-imagery-eeg-classification-for-patients-with-amyotrophic-lateral-sclerosis-using-fractal-dimension-and-fisher-s-criterion-based-channel-selection
#16
Yi-Hung Liu, Shiuan Huang, Yi-De Huang
Motor imagery is based on the volitional modulation of sensorimotor rhythms (SMRs); however, the sensorimotor processes in patients with amyotrophic lateral sclerosis (ALS) are impaired, leading to degenerated motor imagery ability. Thus, motor imagery classification in ALS patients has been considered challenging in the brain-computer interface (BCI) community. In this study, we address this critical issue by introducing the Grassberger-Procaccia and Higuchi's methods to estimate the fractal dimensions (GPFD and HFD, respectively) of the electroencephalography (EEG) signals from ALS patients...
July 3, 2017: Sensors
https://www.readbyqxmd.com/read/28668480/a-new-challenge-in-forensic-toxicology-exemplified-by-a-case-of-murder-under-the-influence-of-a-synthetic-cannabinoid-am-2201
#17
Sebastian Rojek, Małgorzata Kłys, Martyna Maciów-Głąb, Karol Kula
Among new psychoactive substances (NPS) available on the narcotic market, a significant number consists of synthetic cannabinoids commonly known as smokable herbal "spice" and "K2", and which are legally treated as a legal alternative to marijuana. The dearth of information on the pharmacology of these intoxicants as they are introduced into the market has created the urgent need among healthcare providers for case studies on the substances belonging to this group, both in terms of the consequences of using such intoxicants, and in methods of detection...
June 24, 2017: Legal Medicine
https://www.readbyqxmd.com/read/28666186/eeg-correlates-of-cognitive-time-scales-in-the-necker-zeno-model-for-bistable-perception
#18
J Kornmeier, E Friedel, M Wittmann, H Atmanspacher
The Necker-Zeno model of bistable perception provides a formal relation between the average duration of meta-stable percepts (dwell times T) of ambiguous figures and two other basic time scales (t0, ΔT) underlying cognitive processing. The model predicts that dwell times T covary with t0, ΔT or both. We tested this prediction by exploiting that observers, in particular experienced meditators, can volitionally control dwell times T. Meditators and non-meditators observed bistable Necker cubes either passively or tried to hold their current percept...
June 27, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28658069/components-of-fatigue-mind-and-body
#19
Colin Carriker
Maximal intensity exercise requires significant energy demand. Subsequently, prolonged high intensity effort eventually initiates volitional cessation of the event; often preceded by a sensation of fatigue. Those examining the basis of fatigue tend to advocate either a peripheral or central model to explain such volitional failure. Practitioners and athletes who understand the tenants of fatigue can tailor their exercise regimens to target areas of potential physical or mental limitation. This review examines the rationale surrounding two separate models which postulate the origination of fatigue...
June 22, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28656742/long-term-subregion-specific-encoding-of-enhanced-ethanol-intake-by-d1dr-medium-spiny-neurons-of-the-nucleus-accumbens
#20
Rafael Renteria, Tavanna R Buske, Richard A Morrisett
The nucleus accumbens (NAc) is a critical component of the mesocorticolimbic system and is involved in mediating the motivational and reinforcing aspects of ethanol consumption. Chronic intermittent ethanol (CIE) exposure is a reliable model to induce ethanol dependence and increase volitional ethanol consumption in mice. Following a CIE-induced escalation of ethanol consumption, NMDAR (N-methyl-D-aspartate receptor)-dependent long-term depression in D1 dopamine receptor expressing medium spiny neurons of the NAc shell was markedly altered with no changes in plasticity in D1 dopamine receptor medium spiny neurons from the NAc core...
June 28, 2017: Addiction Biology
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