scholarly journals Correlation of EEG Envelopes is the Best Method for Identifying Mental Diseases, Functional States, Individual and Intergroup Differences

2021 ◽  
pp. 49-58
Author(s):  
Alexey Pavlovich Kulaichev
Keyword(s):  
Statistical Analysis ◽  
New Method ◽  
Mental Diseases ◽  
Functional States ◽  
Effective Use

The principal errors of spectral and coherent analysis are discussed,and the mathematics of these methods is not related to EEG nature. In this regard, in 2011, the new method was developed for evaluating EEG synchronyby the correlation of envelopes, which has a direct and fundamental physiological meaning. The basics of this method and the methodology of subsequent multilateral statistical analysis are considered. The effective use of the method for identifying individual and intergroup differences in the norm and several types of schizophrenia, depressive diseases, five stages of sleep, and similar functional states are presented.

scholarly journals THE ROLE OF NATURAL HEALING RESOURCES OF THE COUNTRY'S REGIONS IN IMPROVING THE QUALITY OF SPA SERVICES FOR FAMILIES

2019 ◽  
Vol 29 (3) ◽  
pp. 407-416
Author(s):  
M.S. Oborin
Keyword(s):  
Statistical Analysis ◽  
Qualitative And Quantitative ◽  
Social And Economic Development ◽  
Effective Use ◽  
Natural Healing ◽  
Quantitative Indicators ◽  
Family Recreation ◽  
Perm Region

Features of the organization of family recreation and treatment on the territories possessing natural healing resources and developed sanatorium and resort complex are considered. The research materials are scientific works in the field of assessment of natural and climatic potential of territories, directions of its effective use in social and economic development of regions. The functions of the sanatorium and resort complex are characterized, the data on the state of family and children's recreation and treatment are given on the example of the Perm region. The main methodology of the study is an expert survey and statistical analysis. The qualitative and quantitative indicators of family and children's recreation and treatment are considered, the actual directions of development of sanatorium and resort offer for this group of consumers are revealed. Measures are proposed to optimize the use of natural healing resources of the region in order to improve the quality of family holidays.

Sex Differences in the Swordtail Xiphophorus hellerii Revealed by a New Method to Investigate Volumetric Data

2020 ◽  
Vol 95 (3-4) ◽  
pp. 127-138
Author(s):  
Michael H. Hofmann
Keyword(s):  
Sex Differences ◽  
Statistical Analysis ◽  
Relative Size ◽  
Volume Ratio ◽  
New Method ◽  
Brain Morphology ◽  
Body Parts ◽  
Swordtail Fish ◽  
Xiphophorus Hellerii ◽  
Matrix Volume

Comparing the relative volumes of body parts is a useful tool in morphology, but it is not trivial to do this in animals that differ in overall size. To account for scaling differences, a “reference size” has to be determined and the original absolute volumes have to be “corrected for” by this scaling reference. However, the outcome of a statistical analysis is greatly affected by this “reference size,” and it is practically impossible to determine the “overall size” of a structure independent of the changes in the relative size of the parts of it. Here, a new method is introduced to compare the relative volumes of parts that does not need a scaling reference. The method transforms the absolute part volumes into a ratio matrix (volume ratio transformation, VRT). The VRT is free of any scaling factors and can be used to compare groups of animals. This paper also reviews various other errors made frequently when comparing brain morphology between animals. Finally, the VRT is applied to investigate sex differences in the swordtail fish <i>(Xiphophorus hellerii)</i>, which show profound differences in the size of the valvula cerebelli.

A Manual Approach to One-Dimensional Minimization

1979 ◽  
Vol 101 (2) ◽  
pp. 355-360
Author(s):  
K. A. Afimiwala ◽  
R. W. Mayne
Keyword(s):  
Statistical Analysis ◽  
Minimization Method ◽  
Interactive Method ◽  
One Dimensional ◽  
Significant Difference ◽  
Effective Use

An interactive method for manually performing one-dimensional searches is presented. The user computes the function at selected points and the results at each iteration are graphically displayed. As the shape of the function becomes apparent the minimum is readily identified. An experiment was designed to compare the performance of the manual scheme with that of an automated one-dimensional minimization method. Statistical analysis showed that at low accuracies the subjects performed as well as the automated procedure and that there was no significant difference among them. However, at higher accuracies the user’s performance seemed to depend on his natural ability and his effective use of the options for magnifying the display.

scholarly journals Vertical contact tightness of occlusion comparison between orofacial myalgia patients and asymptomatic controls: a pilot study

2018 ◽  
Vol 46 (12) ◽  
pp. 4952-4964
Author(s):  
Kun Qi ◽  
Yi-Fei Xu ◽  
Shao-Xiong Guo ◽  
Wei Xiong ◽  
Mei-Qing Wang
Keyword(s):  
Statistical Analysis ◽  
Pilot Study ◽  
Orofacial Pain ◽  
New Method ◽  
Occlusal Contact ◽  
Female Patients ◽  
Vertical Contact ◽  
Age And Sex

Objective The association between occlusal contact and orofacial pain remains unclear. The aim of this study was to detect occlusal contact tightness by using a new method and to compare differences between patients and asymptomatic controls. Methods Fifteen female patients with orofacial myalgia and fifteen age- and sex-matched asymptomatic controls were enrolled. Occlusal contacts were recorded by making bite imprints. The numbers, sizes, and distributions of the contacts were detected by making photos of bite imprints after biting. The Mann-Whitney U test and ANOVA were used for statistical analysis. Results In myalgia patients, impact contacts at the molar regions were more frequent, larger in number and area size, and were distributed more on guiding cusps, compared with impact contacts in asymptomatic controls. Conclusion Our new method revealed more prevalent and more severe impact contacts in orofacial myalgia patients, compared with asymptomatic controls.

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