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https://www.readbyqxmd.com/read/28226827/analysis-of-loss-of-alertness-due-to-cognitive-fatigue-using-motif-synchronization-of-eeg-records
#1
Anwesha Sengupta, Abhishek Tiwari, Aritra Chaudhuri, Aurobinda Routray, Anwesha Sengupta, Abhishek Tiwari, Aritra Chaudhuri, Aurobinda Routray, Aurobinda Routray, Anwesha Sengupta, Aritra Chaudhuri, Abhishek Tiwari
Continuous and repetitive performance of cognitive tasks is likely to cause a change in the alertness levels of an individual. The present paper investigates the changes in EEG as a marker of alertness during an experiment designed to induce cognitive fatigue in subjects by continuous and repetitive performance of standard neuropsychological tests. Electroencephalogram (EEG), speech data and high-speed ocular images are recorded during the task set comprising of an Auditory Response Test (ART) Psychomotor Vigilance Test (PVT), a Letter Counting (LC) task, and a variant of the Stroop Task...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28217541/urban-and-rural-disparity-in-tobacco-use-and-knowledge-about-oral-cancer-among-adolescents-an-epidemiological-survey-on-12-and-15-year-school-going-students
#2
Rajesh Sabnis, Kamtaram Sahu, Deepak Thakur, Sanidhya Surana, Heena Mazhar, Soumy Pandey
AIMS AND OBJECTIVES: To assess and compare the tobacco use prevalence; to understand and compare attitudes and knowledge related to tobacco use and its health impact among urban and rural students; and to assess urban and rural disparity in the use of tobacco among 12 and 15-year-old adolescents in the urban and rural schools in Chhattisgarh, India. MATERIALS AND METHODS: A cross-sectional study was conducted among 12 and 15-year-old and urban and rural school going children in Durg District...
December 2016: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28217521/association-of-dental-and-skeletal-fluorosis-with-calcium-intake-and-serum-vitamin-d-concentration-in-adolescents-from-a-region-endemic-for-fluorosis
#3
Prerna P Patel, Pinal A Patel, M Mughal Zulf, Bhrugu Yagnik, Neha Kajale, Rubina Mandlik, Vaman Khadilkar, Shashi A Chiplonkar, Supriya Phanse, Vivek Patwardhan, Priscilla Joshi, Ashish Patel, Anuradha V Khadilkar
CONTEXT: Fluorosis is controlled by the duration of fluoride exposure and calcium and Vitamin D nutrition status. AIM: To examine (a) prevalence of dental and skeletal fluorosis in adolescents from upper, middle, and lower socioeconomic strata (SES) and (b) association of fluorosis with calcium intake and Vitamin D status. SETTINGS AND DESIGN: A cross-sectional study conducted in 10-13.9 years apparently healthy adolescents (n = 90), from different SES of Patan (Gujarat, India)...
January 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28210779/locomotor-activity-and-discriminative-stimulus-effects-of-a-novel-series-of-synthetic-cathinone-analogs-in-mice-and-rats
#4
Michael B Gatch, Sean B Dolan, Michael J Forster
RATIONALE: Recent years have seen an increase in the recreational use of novel, synthetic psychoactive substances. There are little or no data on the abuse liability of many of the newer compounds. OBJECTIVES: The current study investigated the discriminative stimulus and locomotor effects of a series of synthetic analogs of cathinone: α-pyrrolidinopropiophenone (α-PPP), α-pyrrolidinohexiophenone (α-PHP), α-pyrrolidinopentiothiophenone (α-PVT), 3,4-methylenedioxybutiophenone (MDPBP), and ethylone...
February 16, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28196342/decreased-salivary-alpha-amylase-levels-are-associated-with-performance-deficits-during-sleep-loss
#5
Maja Pajcin, Siobhan Banks, Jason M White, Jill Dorrian, Gemma M Paech, Crystal Grant, Kayla Johnson, Katie Tooley, Justin Fidock, Gary H Kamimori, Chris B Della Vedova
During sleep deprivation, neurobehavioral functions requiring sustained levels of attention and alertness are significantly impaired. Discrepancies between subjective measures of sleepiness and objective performance during sustained operations have led to interest in physiological monitoring of operator performance. Alertness, vigilance, and arousal are modulated by the wake-promoting actions of the central noradrenergic system. Salivary alpha-amylase (sAA) has been proposed as a sensitive peripheral measure of noradrenergic activity, but limited research has investigated the relationship between sAA and performance...
February 1, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28193686/paraventricular-thalamus-balances-danger-and-reward
#6
Eun A Choi, Gavan P McNally
Foraging animals balance the need to seek food and energy against the accompanying dangers of injury and predation. To do so, they rely on learning systems encoding reward and danger. Whereas much is known about these separate learning systems, little is known about how they interact to shape and guide behavior. Here we show a key role for the rat paraventricular nucleus of the thalamus (PVT), a nucleus of the dorsal midline thalamus, in this interaction. First we show behavioral competition between reward and danger: the opportunity to seek food reward negatively modulates expression of species-typical defensive behavior...
February 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28180235/incidence-rates-and-case-fatality-rates-of-portal-vein-thrombosis-and-budd-chiari-syndrome
#7
Walter Ageno, Francesco Dentali, Fulvio Pomero, Luigi Fenoglio, Alessandro Squizzato, Giovanni Pagani, Roberta Re, Matteo Bonzini
Little information is available on the incidence of splanchnic vein thrombosis and on mortality rates during the acute phase of the disease. We performed a large epidemiologic study on hospital admissions for portal vein thrombosis (PVT) and the Budd-Chiari syndrome (BCS) between 2002 and 2012 in Northwestern Italy. Primary and secondary discharge diagnoses of PVT and BCS were identified using the 9th edition International Classification of Diseases codes 453.0, 572.1 and 452. Hospitalisations for recurrent events were not included...
February 9, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28156190/the-visual-association-test-extended-a-cross-sectional-study-of-the-performance-validity-measures
#8
Sascha R A Meyer, Jos F M de Jonghe, Ben Schmand, Rudolf W H M Ponds
OBJECTIVE: Given the hazards of knowledge about performance validity tests (PVTs) being proliferated among the general public, there is a continuous need to develop new PVTs. The purpose of these studies was to validate the newly developed Visual Association Test-Extended (VAT-E). METHOD: The VAT-E consists of 24 pairs of line drawings; it is partly based on Green's Word Memory Test (WMT) paradigm. In study 1, we compared VAT-E total scores of healthy controls (n = 226), patients with mild cognitive impairment (MCI) (n = 76), patients with Alzheimer's disease (AD) (n = 26), and persons instructed to feign memory deficit (n = 29)...
February 3, 2017: Clinical Neuropsychologist
https://www.readbyqxmd.com/read/28153218/sleep-related-intermittent-hypoxia-is-associated-with-decreased-psychomotor-vigilance-in-japanese-community-residents
#9
Sakurako Tanno, Takeshi Tanigawa, Koutatsu Maruyama, Eri Eguchi, Takashi Abe, Isao Saito
BACKGROUND: Sleep disordered breathing (SDB) is associated with decreased psychomotor vigilance (hereafter "vigilance") in clinical settings, but this association has yet to be confirmed in the general population. The aim of this study is to determine the associations between SDB and vigilance in a large sample of community-based participants. METHODS: The study sample consisted of 1508 community-dwelling Japanese persons (age: 30-79 years, women: 62.7%, mean body mass index [BMI]: 23...
January 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28149382/10-km-running-performance-predicted-by-a-multiple-linear-regression-model-with-allometrically-adjusted-variables
#10
Cesar C C Abad, Ronaldo V Barros, Romulo Bertuzzi, João F L Gagliardi, Adriano E Lima-Silva, Mike I Lambert, Flavio O Pires
The aim of this study was to verify the power of VO2max, peak treadmill running velocity (PTV), and running economy (RE), unadjusted or allometrically adjusted, in predicting 10 km running performance. Eighteen male endurance runners performed: 1) an incremental test to exhaustion to determine VO2max and PTV; 2) a constant submaximal run at 12 km·h(-1) on an outdoor track for RE determination; and 3) a 10 km running race. Unadjusted (VO2max, PTV and RE) and adjusted variables (VO2max(0.72), PTV(0.72) and RE(0...
June 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28149350/the-influence-of-high-altitude-acclimatization-on-ventilatory-and-blood-oxygen-saturation-responses-during-normoxic-and-hypoxic-testing
#11
Anton Ušaj, Stojan Burnik
We investigated how acclimatization effects achieved during a high-altitude alpinist expedition influence endurance performance, ventilation ([Formula: see text]) and blood oxygen saturation (SaO2) in normoxic (NOR) and hypoxic conditions (HYP). An incremental testing protocol on a cycle ergometer was used to determine the power output corresponding to the Lactate (PLT) and Ventilatory Threshold (PVT) in NOR and HYP (FiO2=0.13) as indirect characteristics of endurance performance in both conditions. Furthermore, changes in [Formula: see text], SaO2, blood pH and Pco2 were measured at a similar absolute exercise intensity of 180 W in NOR and HYP conditions...
April 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28143576/enhancement-of-autonomic-and-psychomotor-arousal-by-exposures-to-blue-wavelength-light-importance-of-both-absolute-and-relative-contents-of-melanopic-component
#12
Emi Yuda, Hiroki Ogasawara, Yutaka Yoshida, Junichiro Hayano
BACKGROUND: Blue light containing rich melanopsin-stimulating (melanopic) component has been reported to enhance arousal level, but it is unclear whether the determinant of the effects is the absolute or relative content of melanopic component. We compared the autonomic and psychomotor arousal effects of melanopic-enriched blue light of organic light-emitting diode (OLED) with those of OLED lights with lesser absolute amount of melanopic component (green light) and with greater absolute but lesser relative content (white light)...
January 31, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28137649/lesions-of-the-paraventricular-thalamic-nucleus-attenuates-prepulse-inhibition-of-the-acoustic-startle-reflex
#13
Pınar Öz, F Duygu Kaya Yertutanol, Tayfun Gözler, Ayşe Özçetin, I Tayfun Uzbay
The paraventricular thalamic nucleus (PVT) is a midline nucleus with strong connections to cortical and subcortical brain regions such as the prefrontal cortex, amygdala, nucleus accumbens and hippocampus and receives strong projections from brain stem nuclei. Prepulse inhibition (PPI) is mediated and modulated by complex cortical and subcortical networks that are yet to be fully identified in detail. Here, we suggest that the PVT may be an important brain region for the modulation of PPI. In our study, the paraventricular thalamic nuclei of rats were electrolytically lesioned...
January 27, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28110540/portal-vein-thrombosis-in-patients-with-cirrhosis-undergoing-elective-transjugular-intrahepatic-portosystemic-shunt
#14
Wan Yue-Meng, Yu-Hua Li, Hua-Mei Wu, Jing Yang, Li-Hong Yang, Ying Xu
Portal vein thrombosis (PVT) is a common complication in cirrhosis. The aim of this study was to determine risk factors for PVT, assess the efficacy of anticoagulant therapy, and evaluate the effects of PVT on patients with cirrhosis undergoing elective transjugular intrahepatic portosystemic shunt (TIPSS). A total of 101 patients with cirrhosis undergoing elective TIPSS were prospectively studied. After TIPSS, all patients received preventive therapy for PVT and were followed up at 3, 6, 12, and 24 months...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28109996/survival-in-ventricular-fibrillation-with-emphasis-on-the-number-of-defibrillations-in-relation-to-other-factors-at-resuscitation
#15
Johan Holmén, Jacob Hollenberg, Andreas Claesson, Maria Jiménez Herrera, Youcef Azeli, Johan Herlitz, Christer Axelsson
INTRODUCTION: Mortality after out of hospital cardiac arrest (OHCA) is high and a shockable rhythm is a key predictor of survival. A concomitant need for repeated shocks appears to be associated with less favorable outcome. AIM: To, among patients found in ventricular fibrillation (VF) or pulseless ventricular tachycardia (pVT) describe: (a) factors associated with 30-day survival with emphasis on the number of defibrillatory shocks delivered; (b) the distribution of and the characteristics of patients in relation to the number of defibrillatory shocks that were delivered...
January 18, 2017: Resuscitation
https://www.readbyqxmd.com/read/28109767/thromboelastometry-hypercoagulable-profiles-and-portal-vein-thrombosis-in-cirrhotic-patients-with-hepatocellular-carcinoma
#16
Alberto Zanetto, Marco Senzolo, Alessandro Vitale, Umberto Cillo, Claudia Radu, Francesca Sartorello, Luca Spiezia, Elena Campello, Kryssia Rodriguez-Castro, Alberto Ferrarese, Fabio Farinati, Patrizia Burra, Paolo Simioni
BACKGROUND: Cirrhotic patients with hepatocellular carcinoma (HCC) exhibit hypercoagulability. AIM: We investigated whether thromboelastometry can detect hypercoagulability in these patients and the association with portal vein thrombosis (PVT). METHODS: At baseline, cirrhotic patients with and without HCC underwent thromboelastometry. PVT onset was recorded over a 12-month follow-up period. RESULTS: Seventy-six patients (41 with and 35 without HCC) were included...
December 26, 2016: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28095256/evaluation-of-a-psychomotor-vigilance-task-for-touch-screen-devices
#17
Lucia Arsintescu, Jeffrey B Mulligan, Erin E Flynn-Evans
OBJECTIVE: Our goals were to compare three techniques for performing a psychomotor vigilance task (PVT) on a touch screen device (fifth-generation iPod) and to determine the device latency. BACKGROUND: The PVT is a reaction-time test that is sensitive to sleep loss and circadian misalignment. Several PVT tests have been developed for touch screen devices, but unlike the standard PVT developed for laboratory use, these tests allow for touch responses to be recorded at any location on the device, with contact from any finger...
January 1, 2017: Human Factors
https://www.readbyqxmd.com/read/28094188/prosthetic-valve-thrombosis-in-the-acute-phase-of-the-stroke-relevance-of-detection-and-follow-up
#18
Jacint Sala-Padro, Jorge Pagola, Maria Teresa Gonzalez-Alujas, Laia Sero, Jesus Juega, Noelia Rodriguez-Villatoro, Sandra Boned, David Rodriguez-Luna, Marian Muchada, Ruben Fernandez-Galera, Marta Rubiera, Marc Ribo, Arturo Evangelista, Carlos Molina
BACKGROUND: Stroke may be the first symptom of prosthetic valve thrombosis (PVT); therefore, rapid diagnosis and therapy are crucial. We aimed to evaluate the prevalence, main predictors, and long-term clinical evolution of patients with PVT in the acute phase of stroke. METHODS: We studied consecutive acute ischemic stroke patients with prosthetic heart valves who underwent emergent transesophageal echocardiography (TEE) during a 5-year period. Two groups were defined depending on the presence of PVT (PVT or non-PVT groups)...
January 13, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28070621/behavioral-evidence-for-the-abuse-potential-of-the-novel-synthetic-cathinone-alpha-pyrrolidinopentiothiophenone-pvt-in-rodents
#19
Jae Hoon Cheong, Mee Jung Choi, Choon-Gon Jang, Yong Sup Lee, Sooyeun Lee, Hee Jin Kim, Joung-Wook Seo, Seong Shoon Yoon
RATIONALE: Synthetic cathinones are chemical derivatives of cathinone that are pharmacologically similar to cocaine and methamphetamine. Recently, abuse of synthetic cathinones among young people has increased. OBJECTIVES: The present study aimed to characterize the behavioral effects of alpha-pyrrolidinopentiothiophenone (PVT), an analog of alpha-pyrrolidinovalerophenone and second-generation synthetic cathinone, as well as to evaluate its abuse potential, using conditioned place preference, intravenous self-administration (SA), and drug discrimination paradigms in rodent models...
January 9, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28062433/rivaroxaban-lessens-the-number-of-thrombi-in-the-left-atrium-and-right-lower-pulmonary-vein-as-illustrated-by-transoesophageal-echocardiography-but-not-80-mdct
#20
Hidekazu Takeuchi
Stroke is a clinically important problem. A left atrial thrombus is known as a cause of ischaemic stroke. A pulmonary vein thrombus (PVT) is thought to be rare; however, PVT is common in elderly patients. Additionally, images of PVT with transoesophageal echocardiography (TEE) following treatment have not been well contrasted with that from either 64 or 80-slice multidetector CT (80-MDCT). The images of such changes depicted by TEE remain unknown. An 87-year-old man with hypertension was examined by 80-MDCT and TEE to check the cardiac thrombus...
January 6, 2017: BMJ Case Reports
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