59 research outputs found
Integral Functionals of the Gasser–Muller Regression Function
For integral functionals of the Gasser–Muller regression function and its derivatives, we consider the plug-in estimator. The consistency and asymptotic normality of the estimator are shown.Для інтегральних функцiоналiв Функції регресії Гассера-Мюллера та їх похідних розглядається оцінка, що підключається. Встановлено обґрунтованість та асимптотичну нормальність цієї оцінки
A Calorimetric Characterization of Cr(VI)-Reducing Arthrobacter oxydans
This is the first of a series of calorimetric studies designed to characterize and understand survival mechanisms of metal-reducing bacteria isolated from metal-polluted environments. In this paper we introduce a new concept of thermal spectrum of the endothermic melting of complex biological systems (e.g., proteins, nucleic acids, ribosomes, membrane structures) in intact cells. All thermal spectra measured are thermograms that describe the temperature dependence of heat capacity change of the complex systems of biologically active substances in bacterial cells. This new concept of thermal spectrum was applied to investigate spectral features from intact cells of Cr(VI)-reducer Arthrobacter oxydans at different points of their growth conditions and stages. Over the temperature range of 40–105°C, we observed that spectral changes are particularly significant in the 40–90°C interval. This may correspond to the orderly changes in subcellular structural elements: proteins, ribosomes and RNA, membranes, and various structural elements of the cell wall during different points of the growth cycle and growth conditions. Spectral changes in the 90–105°C region are less pronounced, implicating that the structural composition of DNA-Protein (DNP) complexes may change little
EEG Biofeedback as a Treatment for Substance Use Disorders: Review, Rating of Efficacy, and Recommendations for Further Research
Electroencephalographic (EEG) biofeedback has been employed in substance use disorder (SUD) over the last three decades. The SUD is a complex series of disorders with frequent comorbidities and EEG abnormalities of several types. EEG biofeedback has been employed in conjunction with other therapies and may be useful in enhancing certain outcomes of therapy. Based on published clinical studies and employing efficacy criteria adapted by the Association for Applied Psychophysiology and Biofeedback and the International Society for Neurofeedback and Research, alpha theta training—either alone for alcoholism or in combination with beta training for stimulant and mixed substance abuse and combined with residential treatment programs, is probably efficacious. Considerations of further research design taking these factors into account are discussed and descriptions of contemporary research are given
Stronger Neural Modulation by Visual Motion Intensity in Autism Spectrum Disorders
Theories of autism spectrum disorders (ASD) have focused on altered perceptual integration
of sensory features as a possible core deficit. Yet, there is little understanding of the
neuronal processing of elementary sensory features in ASD. For typically developed individuals,
we previously established a direct link between frequency-specific neural activity
and the intensity of a specific sensory feature: Gamma-band activity in the visual cortex
increased approximately linearly with the strength of visual motion. Using magnetoencephalography
(MEG), we investigated whether in individuals with ASD neural activity reflect the
coherence, and thus intensity, of visual motion in a similar fashion. Thirteen adult participants
with ASD and 14 control participants performed a motion direction discrimination task
with increasing levels of motion coherence. A polynomial regression analysis revealed that
gamma-band power increased significantly stronger with motion coherence in ASD compared
to controls, suggesting excessive visual activation with increasing stimulus intensity
originating from motion-responsive visual areas V3, V6 and hMT/V5. Enhanced neural
responses with increasing stimulus intensity suggest an enhanced response gain in ASD.
Response gain is controlled by excitatory-inhibitory interactions, which also drive high-frequency
oscillations in the gamma-band. Thus, our data suggest that a disturbed excitatoryinhibitory
balance underlies enhanced neural responses to coherent motion in ASD
EEG Biofeedback as a Treatment for Substance Use Disorders: Review, Rating of Efficacy and Recommendations for Further Research
The Dirichlet problem for a mixed-type equation with characteristic degeneration in a rectangular domain
Neuromodulation Integrating rTMS and Neurofeedback for the Treatment of Autism Spectrum Disorder: An Exploratory Study
On one homogeneity criteria based on quadratic deviations between kernel estimates of the distribution density in independent samples
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