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https://www.readbyqxmd.com/read/28219726/diagnostic-value-of-sleep-stage-dissociation-as-visualized-on-a-2-dimensional-sleep-state-space-in-human-narcolepsy
#1
Anders Vinther Olsen, Jens Stephansen, Eileen Leary, Paul E Peppard, Hong Sheungshul, Poul Jenum, Helge Sorensen, Emmanuel Mignot
BACKGROUND: Type 1 narcolepsy (NT1) is characterized by symptoms believed to represent Rapid Eye Movement (REM) sleep stage dissociations, occurrences where features of wake and REM sleep are intermingled, resulting in a mixed state. We hypothesized that sleep stage dissociations can be objectively detected through the analysis of nocturnal Polysomnography (PSG) data, and that those affecting REM sleep can be used as a diagnostic feature for narcolepsy. NEW METHOD: A Linear Discriminant Analysis (LDA) model using 38 features extracted from EOG, EMG and EEG was used in control subjects to select features differentiating wake, stage N1, N2, N3 and REM sleep...
February 17, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28186814/optimum-mixed-state-discrimination-for-noisy-entanglement-enhanced-sensing
#2
Quntao Zhuang, Zheshen Zhang, Jeffrey H Shapiro
Quantum metrology utilizes nonclassical resources, such as entanglement or squeezed light, to realize sensors whose performance exceeds that afforded by classical-state systems. Environmental loss and noise, however, easily destroy nonclassical resources and, thus, nullify the performance advantages of most quantum-enhanced sensors. Quantum illumination (QI) is different. It is a robust entanglement-enhanced sensing scheme whose 6 dB performance advantage over a coherent-state sensor of the same average transmitted photon number survives the initial entanglement's eradication by loss and noise...
January 27, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28184334/mixed-states-in-bipolar-disorder-etiology-pathogenesis-and-treatment
#3
REVIEW
Ather Muneer
Many bipolar disorder patients exhibit mixed affective states, which portend a generally more severe illness course and treatment resistance. In the previous renditions of Diagnostic and Statistical Manual mixed states were narrowly defined in the context of bipolar I disorder, but with the advent of DSM-5 the term "mixed episode" was dropped and replaced by "mixed features" specifier which could be broadly applied to manic, hypomanic and depressive episodes in both the bipolar spectrum and major depressive disorders...
January 2017: Chonnam Medical Journal
https://www.readbyqxmd.com/read/28176421/incidence-and-predictors-of-suicide-attempts-in-bipolar-i-and-ii-disorders-a-5-year-follow-up-study
#4
Sanna Pallaskorpi, Kirsi Suominen, Mikko Ketokivi, Hanna Valtonen, Petri Arvilommi, Outi Mantere, Sami Leppämäki, Erkki Isometsä
OBJECTIVES: Few long-term studies on bipolar disorder (BD) have investigated the incidence and risk factors of suicide attempts (SAs) specifically related to illness phases. We examined the incidence of SAs during different phases of BD in a long-term prospective cohort of bipolar I (BD-I) and bipolar II (BD-II) patients, and risk factors specifically for SAs during major depressive episodes (MDEs). METHODS: In the Jorvi Bipolar Study (JoBS), 191 BD-I and BD-II patients were followed using life-chart methodology...
February 8, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28155205/a-pilot-study-to-determine-whether-combinations-of-objectively-measured-activity-parameters-can-be-used-to-differentiate-between-mixed-states-mania-and-bipolar-depression
#5
Jan Scott, Arne E Vaaler, Ole Bernt Fasmer, Gunnar Morken, Karoline Krane-Gartiser
BACKGROUND: Until recently, actigraphy studies in bipolar disorders focused on sleep rather than daytime activity in mania or depression, and have failed to analyse mixed episodes separately. Furthermore, even those studies that assessed activity parameters reported only mean levels rather than complexity or predictability of activity. We identified cases presenting in one of three acute phases of bipolar disorder and examined whether the application of non-linear dynamic models to the description of objectively measured activity can be used to predict case classification...
December 2017: International Journal of Bipolar Disorders
https://www.readbyqxmd.com/read/28145467/exploration-quantum-steering-nonlocality-and-entanglement-of-two-qubit-x-state-in-structured-reservoirs
#6
Wen-Yang Sun, Dong Wang, Jia-Dong Shi, Liu Ye
In this work, there are two parties, Alice on Earth and Bob on the satellite, which initially share an entangled state, and some open problems, which emerge during quantum steering that Alice remotely steers Bob, are investigated. Our analytical results indicate that all entangled pure states and maximally entangled evolution states (EESs) are steerable, and not every entangled evolution state is steerable and some steerable states are only locally correlated. Besides, quantum steering from Alice to Bob experiences a "sudden death" with increasing decoherence strength...
February 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28144880/use-of-stimulants-in-bipolar-disorder
#7
REVIEW
Giulio Perugi, Giulia Vannucchi, Fulvio Bedani, Ettore Favaretto
Several international guidelines indicate stimulants, including methylphenidate (MPH), amphetamines and derivatives, modafinil, and armodafinil among the second-third-line choices for bipolar depression. Efficacy of stimulants has been also reported for the management of residual depressive symptoms such as fatigue and sleepiness and for the management of affective, cognitive, and behavioral symptoms in children and adult bipolar patients with comorbid ADHD. Few case reports show positive results with MPH in the treatment of resistant mania...
January 2017: Current Psychiatry Reports
https://www.readbyqxmd.com/read/28128592/directly-measuring-the-degree-of-quantum-coherence-using-interference-fringes
#8
Yi-Tao Wang, Jian-Shun Tang, Zhi-Yuan Wei, Shang Yu, Zhi-Jin Ke, Xiao-Ye Xu, Chuan-Feng Li, Guang-Can Guo
Quantum coherence is the most distinguished feature of quantum mechanics. It lies at the heart of the quantum-information technologies as the fundamental resource and is also related to other quantum resources, including entanglement. It plays a critical role in various fields, even in biology. Nevertheless, the rigorous and systematic resource-theoretic framework of coherence has just been developed recently, and several coherence measures are proposed. Experimentally, the usual method to measure coherence is to perform state tomography and use mathematical expressions...
January 13, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28113920/predicting-mood-changes-in-bipolar-disorder-through-heartbeat-nonlinear-dynamics
#9
Gaetano Valenza, Mimma Nardelli, Antonio Lanata', Claudio Gentili, Gilles Bertschy, Markus Kosel, Enzo Pasquale Scilingo
Bipolar Disorder (BD) is characterized by an alternation of mood states from depression to (hypo)mania. Mixed states, i.e., a combination of depression and mania symptoms at the same time, can also be present. The diagnosis of this disorder in the current clinical practice is based only on subjective interviews and questionnaires, while no reliable objective psychophysiological markers are available. Furthermore, there are no biological markers predicting BD outcomes, or providing information about the future clinical course of the phenomenon...
April 20, 2016: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28077190/measures-of-the-dsm-5-mixed-features-specifier-of-major-depressive-disorder
#10
Mark Zimmerman
During the past two decades, a number of studies have found that depressed patients frequently have manic symptoms intermixed with depressive symptoms. While the frequency of mixed syndromes are more common in bipolar than in unipolar depressives, mixed states are also common in patients with major depressive disorder. The admixture of symptoms may be evident when depressed patients present for treatment, or they may emerge during ongoing treatment. In some patients, treatment with antidepressant medication might precipitate the emergence of mixed states...
January 12, 2017: CNS Spectrums
https://www.readbyqxmd.com/read/28044944/a-pragmatic-approach-to-the-diagnosis-and-treatment-of-mixed-features-in-adults-with-mood-disorders
#11
Roger S McIntyre, Yena Lee, Rodrigo B Mansur
Mixed features specifier (MFS) is a new nosological entity defined and operationalized in the Diagnostic and Statistical Manual of Mental Disorders (DSM), 5th Edition. The impetus to introduce the MFS and supplant mixed states was protean, including the lack of ecological validity, high rates of misdiagnosis, and guideline discordant treatment for mixed states. Mixed features specifier identifies a phenotype in psychiatry with greater illness burden, as evidenced by earlier age at onset, higher episode frequency and chronicity, psychiatric and medical comorbidity, suicidality, and suboptimal response to conventional antidepressants...
December 2016: CNS Spectrums
https://www.readbyqxmd.com/read/28009204/gaussian-intrinsic-entanglement
#12
Ladislav Mišta, Richard Tatham
We introduce a cryptographically motivated quantifier of entanglement in bipartite Gaussian systems called Gaussian intrinsic entanglement (GIE). The GIE is defined as the optimized mutual information of a Gaussian distribution of outcomes of measurements on parts of a system, conditioned on the outcomes of a measurement on a purifying subsystem. We show that GIE vanishes only on separable states and exhibits monotonicity under Gaussian local trace-preserving operations and classical communication. In the two-mode case, we compute GIE for all pure states as well as for several important classes of symmetric and asymmetric mixed states...
December 9, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/28004626/treating-mixed-mania-hypomania-a-review-and-synthesis-of-the-evidence
#13
Minoru Takeshima
The DSM-5 incorporates a broad concept of mixed states and captured ≥3 nonoverlapping symptoms of the opposite polarity using a "with mixed features" specifier to be applied to manic/hypomanic and major depressive episodes. Pharmacotherapy of mixed states is challenging because of the necessity to treat both manic/hypomanic and depressive symptoms concurrently. High-potency antipsychotics used to treat manic symptoms and antidepressants can potentially deteriorate symptoms of the opposite polarity. This review aimed to provide a synthesis of the current evidence for pharmacotherapy of mixed states with an emphasis on mixed mania/hypomania...
December 22, 2016: CNS Spectrums
https://www.readbyqxmd.com/read/27967047/spatial-splay-states-and-splay-chimera-states-in-coupled-map-lattices
#14
Joydeep Singha, Neelima Gupte
We study the existence and stability of splay states in the coupled sine circle map lattice system using analytic and numerical techniques. The splay states are observed for very low values of the nonlinearity parameter, i.e., for maps which deviate very slightly from the shift map case. We also observe that depending on the parameters of the system the splay state bifurcates to a mixed or chimera splay state consisting of a mixture of splay and synchronized states, together with kinks in the phases of some of the maps and then to a stable globally synchronized state...
November 2016: Physical Review. E
https://www.readbyqxmd.com/read/27904076/amorphous-amorphous-phase-separation-of-freeze-concentrated-protein-and-amino-acid-excipients-for-lyophilized-formulations
#15
Ken-Ichi Izutsu, Hiroyuki Yoshida, Hiroko Shibata, Yukihiro Goda
The objective of this study was to elucidate the mixing state of proteins and amino acid excipients concentrated in the amorphous non-ice region of frozen solutions. Thermal analysis of frozen aqueous solutions was performed in heating scans before and after a heat treatment. Frozen aqueous solutions containing a protein (e.g., recombinant human albumin, gelatin) or a polysaccharide (dextran) and an amino acid excipient (e.g., L-arginine, L-arginine hydrochloride, L-arginine monophosphate, sodium L-glutamate) at varied mass ratios showed single or double Tg' (glass transition temperature of maximally freeze-concentrated solutes)...
2016: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27901119/how-does-the-spin-state-of-co-ions-affect-the-insulator-metal-transition-in-bi2a2co2o8-a%C3%A2-%C3%A2-ca-sr-ba
#16
Xiaokun Huang, Weiyi Zhang
The misfit layered Bi2A2Co2O8 (A = Ca, Sr, Ba) compounds experience an insulator to metal transition as A's ionic radius increases. This feature is contradictory to the conventional wisdom that larger lattice constant favors insulating rather than metallic state, and is also difficult to be reconciled using the Anderson weak localization theory. In this paper, we show from the first-principles calculation that an insulator-metal transition takes place from a nonmagnetic low-spin state of Co(3+) ions to a hexagonally arranged intermediate-spin low-spin mixed-state in CoO2 plane when ionic radius increases from Ca to Ba...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27883083/refractive-index-and-absorption-attribution-of-highly-absorbing-brown-carbon-aerosols-from-an-urban-indian-city-kanpur
#17
P M Shamjad, S N Tripathi, Navaneeth M Thamban, Heidi Vreeland
Atmospheric aerosols influence Earth's radiative balance, having both warming and cooling effects. Though many aerosols reflect radiation, carbonaceous aerosols such as black carbon and certain organic carbon species known as brown carbon have the potential to warm the atmosphere by absorbing light. Black carbon absorbs light over the entire solar spectrum whereas brown carbon absorbs near-UV wavelengths and, to a lesser extent, visible light. In developing countries, such as India, where combustion sources are prolific, the influence of brown carbon on absorption may be significant...
November 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27869049/exclusion-of-overlapping-symptoms-in-dsm-5-mixed-features-specifier-heuristic-diagnostic-and-treatment-implications
#18
Gin S Malhi, Yulisha Byrow, Tim Outhred, Kristina Fritz
This article focuses on the controversial decision to exclude the overlapping symptoms of distractibility, irritability, and psychomotor agitation (DIP) with the introduction of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) mixed features specifier. In order to understand the placement of mixed states within the current classification system, we first review the evolution of mixed states. Then, using Kraepelin's original classification of mixed states, we compare and contrast his conceptualization with modern day definitions...
November 21, 2016: CNS Spectrums
https://www.readbyqxmd.com/read/27866502/dysphoric-mania-mixed-states-and-mania-with-mixed-features-specifier-are-we-mixing-things-up
#19
Susan L McElroy, Paul E Keck
Various terms have been used to describe mania when it is accompanied by depressive symptoms. In this article, we attempt to define and discuss 3 of these terms: dysphoric mania, mixed state, and mania with mixed features specifier. We conclude that whatever term is used, it is important to be aware that mania is more often unpleasant than pleasant, and that the unpleasantness is not limited to depression.
November 21, 2016: CNS Spectrums
https://www.readbyqxmd.com/read/27858444/quantifying-entanglement-of-maximal-dimension-in-bipartite-mixed-states
#20
Gael Sentís, Christopher Eltschka, Otfried Gühne, Marcus Huber, Jens Siewert
The Schmidt coefficients capture all entanglement properties of a pure bipartite state and therefore determine its usefulness for quantum information processing. While the quantification of the corresponding properties in mixed states is important both from a theoretical and a practical point of view, it is considerably more difficult, and methods beyond estimates for the concurrence are elusive. In particular this holds for a quantitative assessment of the most valuable resource, the forms of entanglement that can only exist in high-dimensional systems...
November 4, 2016: Physical Review Letters
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