Visuomotor Organization in the Left-Handed Child: A Neuropsychological Approach

1992 ◽  
Vol 75 (3) ◽  
pp. 699-705 ◽  
Author(s):  
A. Karapetsas ◽  
F. Vlachos
Keyword(s):  
Statistical Evaluation ◽  
Age Groups ◽  
Left Handed ◽  
Complex Figure

In this study we used the Rey-Osterrieth complex figure to examine the visuomotor organization of 514 boys and girls, aged 5.5 to 20.5 yr. All were left-handed as judged by the Edinburgh Handedness Inventory. Statistical evaluation showed significant differences in the visuomotor organization for boys and girls across the various age groups. Statistically significant differences also appeared between the two sexes at the age groups 7.5 to 8.5 and 8.5 to 9.5, with girls showing better organization than boys.

Sex and Handedness in Development of Visuomotor Skills

1997 ◽  
Vol 85 (1) ◽  
pp. 131-140 ◽  
Author(s):  
Anargyros B. Karapetsas ◽  
Filippos M. Vlachos
Keyword(s):  
School Children ◽  
Developmental Stages ◽  
Age Groups ◽  
Cerebral Hemispheres ◽  
Left Handed ◽  
Complex Figure ◽  
Functional Differences ◽  
The Mean ◽  
Visuomotor Skills ◽  
Better Than

Development of visuomotor skills in 420 left-handed and 420 right-handed school children were investigated using the Rey-Osterrieth Complex Figure. Analysis indicate that the visuomotor skills involved in copying a complex figure improve with age until the mean age of 10.5 yr., in both sex and handedness groups. Further analysis showed that girls performed significantly better than boys at certain developmental stages and right-handers performed better than left-handers in various age groups. Some possible differences in performance could be attributed to different rates of maturation of the cerebral hemispheres, to different neuropsychological strategies, or to functional differences between the sex groups and between right- and left-handed children.

scholarly journals Developmental Risk: Evidence from Large Nonright-Handed Samples

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Filippos Vlachos ◽  
Francois Gaillard ◽  
Kiriazis Vaitsis ◽  
Argiris Karapetsas
Keyword(s):  
Age Groups ◽  
Hand Preference ◽  
Learning Theories ◽  
Spatial Skills ◽  
Developmental Risk ◽  
Left Handedness ◽  
Left Handed ◽  
Complex Figure ◽  
Visual Spatial ◽  
Recruitment Procedure

The aim of the present study is twofold. First, we tested the view that individuals who do not develop a typically strong behavioral laterality are distributed differentially among the two genders across age. Second, we examined whether left handedness and mixed handedness are associated with an elevated risk of some developmental or cognitive deficits. A special recruitment procedure provided norms of the Rey-Osterrieth Complex Figure (ROCF) copy from large samples of left-handed () and mixed-handed () compared to right-handed () schoolchildren and adults (). This graphic task was considered as reflective of the growth of visual-spatial skills and impairment at copying as a developmental risk. Subjects’ hand preference was assessed by the Edinburgh Handedness Inventory. Data analysis indicated that (1) the trend towards consistent right handedness is sex related. Girls are clearly ahead of boys in this lateralization process, and boys are overrepresented in mixed-handed subjects. The greater prevalence of mixed-handed boys compared to girls decreases with age. (2) Performance on drawing the ROCF varies according to age and handedness groups. Mixed-handed subjects scored worse in all age groups. The results are discussed in relation to the hormonal-developmental, neuropathological, and learning theories of lateralization.

The Physician’s Task and the Problem of Documentation

1964 ◽  
Vol 03 (01) ◽  
pp. 11-19 ◽  
Author(s):  
A. Proppe
Keyword(s):  
Statistical Evaluation ◽  
Age Groups ◽  
Diagnostic Methods ◽  
Early Age ◽  
Case Histories ◽  
Lupus Vulgaris ◽  
Pathological Conditions ◽  
Clinical Methods ◽  
Corpus Hippocraticum ◽  
High Degree

SummaryCase histories suitable for statistical evaluation can be found even as far back as in the Corpus Hippocraticum. Such simple data as the patient’s age, body weight, size, the date of menarche, etc. are practically always included in the case records, and it is demonstrated that, when such data are recorded in a system of documentation suitable for mechanical sorting, it may enable us to draw conclusions of very great importance. Mechanical registration methods have revealed that, in the determination and recording of data as hitherto carried out. there has been a surprisingly large number of errors and a high degree of unreliability. This view has a considerable influence on modern clinical methods; it renders a more democratic relation between physician and patient necessary and makes clear the need for measures to enhance the reliability of diagnosis and treatment of pathological conditions. The author illustrates this view with reference to the mechanical falsification of the thesis of the proneness of early age groups to lupus vulgaris, furthermore with reference to the mechanical rationalization of modern routine diagnostic methods, to the constant surveillance of adverse effects on public health and to the protection against allergic reactions with the aid of recording systems of personal allergy and intolerance data with mechanical sorting and computer techniques.

Encoding Strategies and Recall Performance of a Complex Figure by Normal Elderly Subjects

1988 ◽  
Vol 7 (4) ◽  
pp. 408-416 ◽  
Author(s):  
Bernadette Ska ◽  
Jean-Luc Nespoulous
Keyword(s):  
Recall Performance ◽  
Age Groups ◽  
Elderly Subjects ◽  
Immediate Recall ◽  
Memory Problems ◽  
Complex Figure ◽  
And Performance ◽  
Encoding Strategies ◽  
Encoding Strategy ◽  
The Relationship

AbstractThis study included 150 subjects aged between 20 and 84, divided into 5 age groups. Analysis of their reproduction and immediate recall work of Rey's complex figure suggested that a) the encoding strategy used during the reproduction phase of this complex figure was not characteristic of a given age, b) elderly subjects reproduced less during the encoding phase and retrieved fewer elements during the recall phase, c) until the age of 74, there was a relationship between the encoding strategy and performance in recall; however, in our subjects aged over 75, memory problems developed differently and the relationship between the encoding strategy and the results in recall became insignificant.

scholarly journals ДИНАМІКА ВІКОВОЇ СТРУКТУРИ ПОПУЛЯЦІЇ CROCUS HEUFFELIANUS HERB. У ПРИРОДНОМУ ЗАПОВІДНИКУ "МЕДОБОРИ" ЗА ОСТАННЄ ДЕСЯТИРІЧЧЯ

2019 ◽  
Vol 75 (1) ◽  
pp. 8-12
Author(s):  
L. Ia. Kozyra ◽  
N. J. Semenovych
Keyword(s):  
Plant Density ◽  
Age Groups ◽  
Absolute Number ◽  
Entire Area ◽  
Left Handed ◽  
Beginning Of Flowering ◽  
Average Plant ◽  
Number Of Individuals

Based on the long-term observations of Crocus heuffelianus Herb., the Red Book species of "Medobory" Nature Reserve, growing on the boundary of the area, the dynamics of the population age structure has been analysed. The study of the population and phenology has been conducted since 1995 at the Botanical Experimental Area (BP-2), which is located in Viknianske forestry (square 32, board 7) and covers an area of 0.1925 hectares.The number and density of the cenopopulation have been studied. The ratio of the number of individuals to the area of the population is taken for the density, and the number of individuals in its entire area – for the absolute number. The number of species ranged from 347 to 753 individuals. The average plant density is 0.27 individuals per square meter. The highest index was in the years 2016 and 2018 – 0.39 and 0.38 individuals per square meter, and the lowest was in 2005 – 0.09 individuals per square meter.During the investigating over the past decade, surveys of plants of different ages (juvenile, virgin and generative), as well as phenological observations were conducted. Allocation of age groups was carried out in accordance with the classification of Melnyk V.I.The population of Crocus heuffelianus Herb in the Reserve is established as a full-fledged and left-handed. Only in 2011 it was intermediate.According to the results of phenological observations, the average long-term date of the vegetation onset is the 15th of March, the beginning of flowering – the 24th of March, the mass flowering – the 1st of April and the end - the 12th of April. The entire flowering cycle is 21 days on average.An important factor that has a significant impact on the state of the population of the species in the Reserve is the spring sowing of bulbs and tufts of plants by sultry European. It is pointed out almost every year, and evidenced by the presence of numerous fresh lanterns and ditches.

Statistical Evaluation of the Respiratory Pattern as a Risk Factor for the Sudden Infant Death Syndrome

1984 ◽  
Vol 23 (01) ◽  
pp. 41-46 ◽  
Author(s):  
K. P. Pfeiffer ◽  
R. Haidmayer ◽  
P. Kerschhaggl ◽  
R. Kurz ◽  
T. Kenner
Keyword(s):  
Statistical Evaluation ◽  
Age Groups ◽  
Sudden Infant Death ◽  
Diagnostic Information ◽  
Respiratory Pattern ◽  
Sudden Infant ◽  
Numerical Classification ◽  
Clinical Classification ◽  
Classification Procedure ◽  
Characteristic Values

SummaryTo evaluate the respiratory pattern of infants with regard to a possible risk for SIDS, two characteristic values (MA and GA) were computed from the distribution of apneas. For the computation of one of these characteristic values (GA), a weight function for apneas was used to consider the diagnostic information content of apneas of different durations. The distribution of apneas is approximately exponential where apneas up to 20 s and longer have been found. Using these characteristic numerical values of the respiratory pattern, infants of different age groups were classified into risk and non-risk cases. This classification was performed in the way that an optimal agreement between clinical and numerical classification was achieved. For both numerical values an agreement of about 90% with clinical classification was achieved.To consider the differing impact of misclassification, a weighted classification procedure was proposed.

scholarly journals INFLUENCE OF ENDOCRINE PATHOLOGY ON NEUROIMMOUNS INTERACTIONS IN PLACENTA

2019 ◽  
Vol 19 (1S) ◽  
pp. 72-74
Author(s):  
A O Drobintseva ◽  
A E Andreev ◽  
S V Makarenko ◽  
D S Medvedev ◽  
Y A Soldatova ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Nk Cells ◽  
B Lymphocytes ◽  
Statistical Evaluation ◽  
Age Groups ◽  
Sharp Decrease ◽  
Expression Ratio ◽  
Urogenital Infection ◽  
Patients With Diabetes ◽  
Inflammatory Processes

According to statistics, approximately 75-80% of cases of diabetes mellitus in women during pregnancy show the presence of a urogenital infection in which the development of the inflammatory process is conducive to the elimination of the pathogen and the appearance of necrotic tissue. Such inflammatory processes, as a rule, occur with the participation of macrophages attracted by B-lymphocytes and NK-cells. The main goal of this study was to evaluate the expression ratio of immunocompetent cells: macrophages, NK cells and B lymphocytes in the placenta in women with diabetes mellitus who are in different age groups. Molecular markers were visualized using an immunoistochemical method. Were used antibodies to CD68 (1:300, Dako, USA) for macrophages, CD20 (1:300, Dako, USA) for B-lymphocytes and CD57 (1:300, Dako, USA) for natural killer cells. The results were visualized on a confocal microscope (FluoView 1000 (Olympus)). For scoring of microphotographs program “Morphology 5.2” was used. On the microphotographs the relative area of expression was evaluated, signified as the ratio of the area of the immunopositive reaction to the total area of the slide and the optical density. Then a statistical evaluation of the obtained data in the “Statistic 10.0” program was carried out. During the experiment, a sharp decrease in the expression of the CD68 marker in the placenta was detected. A decrease in the expression of the CD20 marker with an increase in the age of patients with diabetes mellitus was also demonstrated, while in healthy women an increase was observed in the middle age group. For natural killers, there was no difference between healthy and sick women. The result indicates a weakening of the reaction of the immune system in diabetes mellitus.

Statistical evaluation of medical journal manuscripts

JAMA ◽  
1966 ◽  
Vol 195 (13) ◽  
pp. 1123-1128 ◽  
Author(s):  
S. Schor
Keyword(s):  
Medical Journal ◽  
Statistical Evaluation

An Ultrastructural Study of the Proliferation Patterns of the Reserve Cells of the Human Cervix Uteri

1972 ◽  
Vol 30 ◽  
pp. 80-81
Author(s):  
Takanori Sohda ◽  
Hiroshi Saito ◽  
Goro Asano ◽  
Katsunari Fukushi ◽  
Katsuya Suzuki ◽  
...  
Keyword(s):  
Ultrastructural Study ◽  
Age Groups ◽  
Point Of View ◽  
University Hospital ◽  
Cervix Uteri ◽  
Morphological Aspect ◽  
Functional Aspect ◽  
Pathological Conditions ◽  
Human Cervix ◽  
Morphological Patterns

Recently, the functional aspect as well as morphological aspect of the reserve cells in the cervix uteri drew much attention in view of the carcinogenesis in squamocolumunar junction. In this communication, the authors elucidate the ultrastructural features of the reserve cells in patients of various age groups visiting our university hospital and affiliated hospital.From conventional light microscopic point of view, the reserve cells tend to be pronounced in various pathological conditions, such as the persisting inflammation, proliferative disorders and irritation of hormones. The morphological patterns of the reserve cells from various stage and degree of irritation were observed.

Effects of aging on axon terminals in the dentate molecular layer

1987 ◽  
Vol 45 ◽  
pp. 928-929
Author(s):  
K. Cullen-Dockstader ◽  
E. Fifkova
Keyword(s):  
Granule Cells ◽  
Molecular Layer ◽  
Age Groups ◽  
Long Term Potentiation ◽  
Male Rats ◽  
Perforant Path ◽  
Axon Terminals ◽  
Fischer 344 ◽  
Spatial Memory Deficit ◽  
Effects Of Aging

Normal aging results in a pronounced spatial memory deficit associated with a rapid decay of long-term potentiation at the synapses between the perforant path and spines in the medial and distal thirds of the dentate molecular layer (DML), suggesting the alteration of synaptic transmission in the dentate fascia. While the number of dentate granule cells remains unchanged, and there are no obvious pathological changes in these cells associated with increasing age, the density of their axospinous contacts has been shown to decrease. There are indications that the presynaptic element is affected by senescence before the postsynaptic element, yet little attention has been given to the fine structure of the remaining axon terminals. Therefore, we studied the axon terminals of the perforant path in the DML across three age groups.5 Male rats (Fischer 344) of each age group (3, 24 and 30 months), were perfused through the aorta.

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