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https://www.readbyqxmd.com/read/28735013/simultaneous-intrinsic-signal-imaging-of-auditory-and-visual-cortex-reveals-profound-effects-of-acute-hearing-loss-on-visual-processing
#1
Manuel Teichert, Jürgen Bolz
It has been suggested that primary sensory cortices do not work in isolation but receive subthreshold inputs originating from other senses. However, repercussions of an acute loss of one sense on multimodal sensory processing remain elusive. Here we investigated the early effects of acute hearing loss on visual processing in adult mice. For this, we developed a method to simultaneously map the primary auditory (A1) and visual cortex (V1) using periodic intrinsic optical imaging. We found that reducing sound evoked A1 responsiveness due to the induction of conductive hearing loss (CHL) led to a concomitant increase of visually driven V1 activity...
July 19, 2017: NeuroImage
https://www.readbyqxmd.com/read/28731494/subthreshold-micropulse-laser-reduces-anti-vegf-injection-burden-in-patients-with-diabetic-macular-edema
#2
Elad Moisseiev, Sam Abbassi, Sumeer Thinda, Joseph Yoon, Glenn Yiu, Lawrence S Morse
PURPOSE: To evaluate the efficacy of micropulse laser in the early treatment of diabetic macular edema (DME) and its associated burden of anti-vascular endothelial growth factor (VEGF) injections. METHODS: This retrospective comparative study compared a group of 19 eyes with DME treated with micropulse laser to a matched control group of 19 eyes with DME treated with ranibizumab injections without micropulse laser. Recorded parameters included previous medical and ocular history, previous and subsequent ranibizumab injections administered for DME, visual acuity (VA), central macular thickness throughout the follow-up period, and the occurrence of any complications...
July 20, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28726966/ab-initio-performance-predictions-of-single-layer-in-v-tunnel-field-effect-transistors
#3
Juan Lu, Zhi-Qiang Fan, Jian Gong, Xiang-Wei Jiang
The device performances of both n-type and p-type tunnel field-effect transistors (TFETs) made of single-layer InX (X = N, P, As, Sb) are theoretically evaluated through density functional theory (DFT) and ab initio simulations in this paper. It is found that a promising steep subthreshold swing (SS) of [less-than-or-eq] 60 mV dec(-1) can be obtained with gate length LG = 15.2 nm for all two-dimensional (2D) InX TFETs. In particular, an outstanding on-current of ∼1058 μA μm(-1) (or 880 μA μm(-1)) is estimated in a 2D p-type (or n-type) InSb device, which could barely satisfy the ITRS requirements for future high-performance (HP) applications...
July 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28719234/the-in-vivo-effects-of-the-cb1-positive-allosteric-modulator-gat229-on-intraocular-pressure-in-ocular-normotensive-and-hypertensive-mice
#4
Elizabeth A Cairns, Anna-Maria Szczesniak, Alex J Straiker, Pushkar M Kulkarni, Roger G Pertwee, Ganesh A Thakur, William H Baldridge, Melanie E M Kelly
PURPOSE: Orthosteric cannabinoid receptor 1 (CB1) activation leads to decreases in intraocular pressure (IOP). However, use of orthosteric CB1 agonists chronically has several disadvantages, limiting their usefulness as clinically relevant drugs. Allosteric modulators interact with topographically distinct sites to orthosteric ligands and may be useful to circumvent some of these disadvantages. The purpose of this study was to investigate the effects of the novel CB1-positive allosteric modulator (PAM) GAT229 on IOP...
July 18, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28715973/the-molecular-basis-for-human-immunodeficiency-virus-latency
#5
Uri Mbonye, Jonathan Karn
Although potent combination antiretroviral therapy can effectively block viral replication in the host, human immunodeficiency virus (HIV) persists due to the existence of latent but replication-competent proviruses residing primarily in a very small population of resting memory CD4(+) T cells. Viral latency is established when the expression of the autoregulatory viral trans-activating factor Tat is reduced to subthreshold levels. The absence of Tat reduces HIV transcription and protein production to levels that make the host cell invisible to the immune system and refractory to antiretroviral treatment...
July 17, 2017: Annual Review of Virology
https://www.readbyqxmd.com/read/28714903/sensing-responses-based-on-transfer-characteristics-of-inas-nanowire-field-effect-transistors
#6
Alex C Tseng, David Lynall, Igor Savelyev, Marina Blumin, Shiliang Wang, Harry E Ruda
Nanowire-based field-effect transistors (FETs) have demonstrated considerable promise for a new generation of chemical and biological sensors. Indium arsenide (InAs), by virtue of its high electron mobility and intrinsic surface accumulation layer of electrons, holds properties beneficial for creating high performance sensors that can be used in applications such as point-of-care testing for patients diagnosed with chronic diseases. Here, we propose devices based on a parallel configuration of InAs nanowires and investigate sensor responses from measurements of conductance over time and FET characteristics...
July 16, 2017: Sensors
https://www.readbyqxmd.com/read/28714240/tunable-snse2-wse2-heterostructure-tunneling-field-effect-transistor
#7
Xiao Yan, Chunsen Liu, Chao Li, Wenzhong Bao, Shijin Ding, David Wei Zhang, Peng Zhou
The burgeoning 2D semiconductors can maintain excellent device electrostatics with an ultranarrow channel length and can realize tunneling by electrostatic gating to avoid deprivation of band-edge sharpness resulting from chemical doping, which make them perfect candidates for tunneling field effect transistors. Here this study presents SnSe2 /WSe2 van der Waals heterostructures with SnSe2 as the p-layer and WSe2 as the n-layer. The energy band alignment changes from a staggered gap band offset (type-II) to a broken gap (type-III) when changing the negative back-gate voltage to positive, resulting in the device operating as a rectifier diode (rectification ratio ~10(4) ) or an n-type tunneling field effect transistor, respectively...
July 17, 2017: Small
https://www.readbyqxmd.com/read/28713236/modulation-of-calcitonin-parathyroid-hormone-and-thyroid-hormone-secretion-by-electrical-stimulation-of-sympathetic-and-parasympathetic-nerves-in-anesthetized-rats
#8
Harumi Hotta, Akiko Onda, Harue Suzuki, Philip Milliken, Arun Sridhar
The thyroid and parathyroid glands are dually innervated by sympathetic (cervical sympathetic trunk [CST]) and parasympathetic (superior laryngeal nerve [SLN]) nerve fibers. We examined the effects of electrical stimulation of efferent or afferent nerve fibers innervating the thyroid and parathyroid glands on the secretion of immunoreactive calcitonin (iCT), parathyroid hormone (iPTH), 3,3',5-triiodothyronine (iT3), and thyroxine (iT4) from the thyroid and parathyroid glands. In anesthetized and artificially ventilated rats, thyroid venous blood was collected...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28707983/signs-of-gas-trapping-in-normal-lung-density-regions-in-smokers
#9
Sandeep Bodduluri, Joseph M Reinhardt, Eric A Hoffman, John D Newell, Hrudaya Nath, Mark T Dransfield, Surya P Bhatt
RATIONALE: A substantial proportion of subjects without overt airflow obstruction have significant respiratory morbidity and structural abnormalities on computed tomography (CT). Whether regions of the lung that appear normal using traditional CT criteria have mild disease is not known. OBJECTIVE: To identity subthreshold structural disease in normal appearing lung regions in smokers. METHODS: We analyzed 8034 subjects with complete inspiratory and expiratory CT data participating in COPDGene including 103 lifetime non-smokers...
July 14, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28702729/improvement-of-the-night-sleep-quality-by-electrocutaneous-subthreshold-stimulation-synchronized-with-the-slow-wave-sleep
#10
Yu V Gulyaev, A S Bugaev, P A Indursky, V M Shakhnarovich, V V Dementienko
Changes in sleep characteristics were studied under the non-wake-up stimulation with current pulses of less than 1 μA on average, applied to the palmar surface skin receptors during Δ-sleep. A significant increase in duration of the first and second cycles of deep sleep has been found, as well as a shorter latent period before the Δ-sleep onset and a longer time of the rapid sleep (REM phase). The sleep structure improvement was accompanied by the reduced reactive anxiety and depression and an increase in subjective physical efficiency...
May 2017: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://www.readbyqxmd.com/read/28702558/high-performance-transparent-in-plane-silicon-nanowire-fin-tfts-via-a-robust-nano-droplet-scanning-crystallization-dynamics
#11
Mingkun Xu, Jimmy Wang, Zhaoguo Xue, Junzhuan Wang, Ping Feng, Linwei Yu, Jun Xu, Yi Shi, Kunji Chen, Pere Roca I Cabarrocas
High mobility, scalable and even transparent thin-film transistors (TFTs) are always being pursued in the field of large area electronics. While excimer laser-beam-scanning can crystallize amorphous Si (a-Si) into high mobility poly-Si, it is limited to small areas. We here demonstrate a robust nano-droplet-scanning strategy that converts an a-Si:H thin film directly into periodic poly-Si nano-channels, with the aid of well-coordinated indium droplets. This enables the robust batch-fabrication of high performance Fin-TFTs with a high hole mobility of >100 cm(2) V(-1) s(-1) and an excellent subthreshold swing of only 163 mV dec(-1), via a low temperature <350 °C thin film process...
July 12, 2017: Nanoscale
https://www.readbyqxmd.com/read/28693846/renewed-attention-on-the-pupil-light-reflex
#12
Paola Binda, Paul D Gamlin
In a recent study, Ebitz and Moore described how subthreshold electrical microstimulation of the macaque frontal eye fields (FEF) modulates the pupillary light reflex. This elegant study suggests that the influence of the FEF and prefrontal cortex on attentional modulation of cortical visual processing extends to the subcortical circuit that mediates a very basic reflex, the pupillary light reflex.
July 7, 2017: Trends in Neurosciences
https://www.readbyqxmd.com/read/28693622/prevention-and-treatment-of-long-term-social-disability-amongst-young-people-with-emerging-severe-mental-illness-with-social-recovery-therapy-the-prodigy-trial-study-protocol-for-a-randomised-controlled-trial
#13
David Fowler, Paul French, Robin Banerjee, Garry Barton, Clio Berry, Rory Byrne, Timothy Clarke, Rick Fraser, Brioney Gee, Kathryn Greenwood, Caitlin Notley, Sophie Parker, Lee Shepstone, Jon Wilson, Alison R Yung, Joanne Hodgekins
BACKGROUND: Young people who have social disability associated with severe and complex mental health problems are an important group in need of early intervention. Their problems often date back to childhood and become chronic at an early age. Without intervention, the long-term prognosis is often poor and the economic costs very large. There is a major gap in the provision of evidence-based interventions for this group, and therefore new approaches to detection and intervention are needed...
July 11, 2017: Trials
https://www.readbyqxmd.com/read/28691824/sustained-sub-60-mv-decade-switching-via-the-negative-capacitance-effect-in-mos2-transistors
#14
Felicia A McGuire, Yuh-Chen Lin, Katherine Price, G Bruce Rayner, Sourabh Khandelwal, Sayeef Salahuddin, Aaron D Franklin
It has been shown that a ferroelectric material integrated into the gate stack of a transistor can create an effective negative capacitance (NC) that allows the device to overcome "Boltzmann tyranny". While this switching below the thermal limit has been observed with Si-based NC field-effect transistors (NC-FETs), the adaptation to 2D materials would enable a device that is scalable in operating voltage as well as size. In this work, we demonstrate sustained sub-60 mV/dec switching, with a minimum subthreshold swing (SS) of 6...
July 12, 2017: Nano Letters
https://www.readbyqxmd.com/read/28689181/subthreshold-hypomania-affects-half-of-patients-with-bipolar-disorder-presenting-with-depressive-symptoms
#15
EDITORIAL
Roger S McIntyre
No abstract text is available yet for this article.
July 8, 2017: Evidence-based Mental Health
https://www.readbyqxmd.com/read/28688741/stronger-default-mode-network-connectivity-is-associated-with-poorer-clinical-insight-in-youth-at-ultra-high-risk-for-psychotic-disorders
#16
Sarah V Clark, Vijay A Mittal, Jessica A Bernard, Aral Ahmadi, Tricia Z King, Jessica A Turner
Impaired clinical insight (CI) is a common symptom of psychotic disorders and a promising treatment target. However, to date, our understanding of how variability in CI is tied to underlying brain dysfunction in the clinical high-risk period is limited. Developing a stronger conception of this link will be a vital first step for efforts to determine if CI can serve as a useful prognostic indicator. The current study investigated whether variability in CI is related to major brain networks in adolescents and young adults at ultra high-risk (UHR) of developing psychosis...
July 5, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28684647/hypersensitivity-to-antipyretics-pathogenesis-diagnosis-and-management
#17
REVIEW
Q U Lee
Antipyretics are commonly prescribed drugs and hypersensitivity occurs at rates of 0.01% to 0.3%. Hypersensitivity can be due to immune mechanisms that include type I to IV hypersensitivity. Type I hypersensitivity results from specific immunoglobulin E production following sensitisation on first exposure. Subsequent exposures elicit degranulation of mast cells, culminating an immediate reaction. Non-type I hypersensitivity is a delayed reaction that involves various effector cells, resulting in maculopapular rash, fixed drug eruptions, drug reaction with eosinophilia and systemic symptoms, and Stevens-Johnson syndrome/toxic epidermal necrolysis...
July 7, 2017: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/28679439/minor-depression-in-older-long-term-unemployed-people-seeking-vocational-support
#18
Sabrina Pfeil, Katrin Holtz, Kathrin-Andrea Kopf, Ulrich Hegerl, Christine Rummel-Kluge
BACKGROUND: Prevalence rates of minor and major depression vary from 0.7 to 6.8 (minor) and 3.8 to 10.9 (major) for the general population. Twenty-two percent of older, long-term unemployed people suffer from major depression. However, the prevalence rate of minor depression (depression on a subthreshold level with less than 5, but more than 1 depression symptom) in this population is unknown. The first aim of this study is to identify that prevalence rate, because we already know that minor depression increases the risk of developing a major depression and this in turn reduces the chances of reemployment what increases social and individual costs at the same time...
July 5, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28672868/oxygen-partial-pressure-impact-on-characteristics-of-indium-titanium-zinc-oxide-thin-film-transistor-fabricated-via-rf-sputtering
#19
Ming-Hung Hsu, Sheng-Po Chang, Shoou-Jinn Chang, Wei-Ting Wu, Jyun-Yi Li
Indium titanium zinc oxide (InTiZnO) as the channel layer in thin film transistor (TFT) grown by RF sputtering system is proposed in this work. Optical and electrical properties were investigated. By changing the oxygen flow ratio, we can suppress excess and undesirable oxygen-related defects to some extent, making it possible to fabricate the optimized device. XPS patterns for O 1s of InTiZnO thin films indicated that the amount of oxygen vacancy was apparently declined with the increasing oxygen flow ratio...
June 26, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28663497/carbon-nanotube-transistors-scaled-to-a-40-nanometer-footprint
#20
Qing Cao, Jerry Tersoff, Damon B Farmer, Yu Zhu, Shu-Jen Han
The International Technology Roadmap for Semiconductors challenges the device research community to reduce the transistor footprint containing all components to 40 nanometers within the next decade. We report on a p-channel transistor scaled to such an extremely small dimension. Built on one semiconducting carbon nanotube, it occupies less than half the space of leading silicon technologies, while delivering a significantly higher pitch-normalized current density-above 0.9 milliampere per micrometer at a low supply voltage of 0...
June 30, 2017: Science
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