scholarly journals PSYCHOPHYSIOLOGICAL FEATURES OF VOLLEYBALL PLAYERS WITH HEARING IMPAIRMENT

2020 ◽  
Vol 20 (S1) ◽  
pp. 128-135
Author(s):  
O Litovchenko ◽  
A Maximova
Keyword(s):  
Nervous System ◽  
Reaction Time ◽  
Hearing Impairment ◽  
Symmetric Distribution ◽  
Functional Capabilities ◽  
Volleyball Players ◽  
Visual Reaction ◽  
The Central Nervous System ◽  
Motor Tests ◽  
The Right

Aim. The paper aims to reveal the features of the central nervous system and interhemispheric asymmetry in volleyball players with hearing impairment. Materials and methods. The study involved 14 athletes of various sports experience with varying degrees of hearing impairment aged from 20 to 35 years (average age 29.20 ± 1.3 years). Simple visual reaction was studied in terms of the reaction time, reaction stability, and functional capabilities of the nervous system. To establish the manual asymmetry, the M. Annette questionnaire and motor tests (dynamometry, tests for intertwined fingers, the applause test) were used, the coefficient of the right hand was calculated. When detecting visual asymmetry, the Rosenbach test and the telescope test were used. The coefficient of the right eye was also calculated. Results. It was established that a third of the examined athletes had a symmetric distribution of signs in both the visual and manual spheres. The reliable dependence between symmetric distribution and sports titles was not found. The reaction time in volleyball players with hearing impairment was reduced. The reaction stability and the level of functional capabilities were within the normal range and had a significant dependence on the sports rank and category. Conclusion. It was revealed that volleyball players with hearing impairment formed a special type of interhemispheric interaction characterized by a more uniform distribution between the right and left hemispheres, which resulted in low values of manual and visual asymmetry.

scholarly journals Relationship between body mass index and simple visual reaction time in students of a medical college of Nepal

2020 ◽  
Vol 1 (2) ◽  
pp. 14-18
Author(s):  
Neeti Bhat ◽  
Narayan Bahadur Mahotra ◽  
Lava Shrestha ◽  
Vibina Aryal ◽  
Nirmala Rayamajhi ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Central Nervous System ◽  
Nervous System ◽  
Reaction Time ◽  
Body Mass ◽  
The Body ◽  
Visual Reaction Time ◽  
Cross Sectional ◽  
Visual Reaction ◽  
The Central Nervous System

Introduction: Obesity is a chronic condition with an increase in adipose tissues. It is known to affect various systems of body including the central nervous system. Reaction time is a measure of the integrity of the central nervous system which is an integrated voluntary response to a stimulus that includes receiving and processing of stimulus, drawing inference, and generating a motor response. This study was conducted with the objective of finding a relationship between body mass index, a measure of obesity and simple visual reaction time. Materials and methods: This cross-sectional analytical study was conducted on 60 participants aged 18-25 years. The body mass index of participants was calculated using Quetelet’s index, calculated by weight in kilograms divided by square of height in meter. Deary-Liewald reaction time task software version 3.10 was used to analyze their simple visual reaction time. Correlation of reaction time and body mass index was assessed using Pearson’s correlation test. Results: A weak positive correlation (r= 0.17) was observed between body mass index and simple visual reaction time but the correlation coefficient was not statistically significant (p=0.19). Conclusions: Slower visual reaction time with an increase in body mass index was noted. But the findings of current study were inadequate to deduce if any linear relationship exists between simple visual reaction time and body mass index.

scholarly journals Malignant Solitary Fibrous Tumor of the Right Cerebellum: A Case Report

2021 ◽  
Vol 13 (1) ◽  
pp. 259-266
Author(s):  
Ye-Tao Zhu ◽  
Yang Liu ◽  
Li-Gang Chen ◽  
Da-Ping Song
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Solitary Fibrous Tumor ◽  
Immunohistochemical Staining ◽  
Biological Behavior ◽  
Resonance Imaging ◽  
Solitary Fibrous Tumors ◽  
The Central Nervous System ◽  
Fibrous Tumor ◽  
The Right

Solitary fibrous tumor is a very rare mesenchymal tumor that occurs mostly in the pleura, and there are few reported cases of a presence in the central nervous system, particularly in the cerebellum. In 2016, the WHO classified solitary fibrous tumors into grade I. In this article, we present a case of malignant solitary fibrous tumor recurring 8 years after surgery in a 63-year-old male. Magnetic resonance imaging showed low to intermediate mixed signal intensity on T1W1. Immunohistochemical staining positivity for Vimentin, CD99, CD34 and Bcl-2, it is consistent with the immunohistochemical characteristics of solitary fibrous tumor. We resected the patient’s tumor, and the patient was followed up for 3 months with no signs of recurrence. Solitary fibrous tumors are very rare in the central nervous system. Immunohistochemical staining positivity for CD34 and Bcl-2 is strongly expressed in most solitary fibrous tumor. Surgical resection is the preferred treatment. Due to the small number of cases, the biological behavior and prognosis of this tumor need to be further explored.

scholarly journals The role of personal anxiety in the development of psychophysiological indicators in adolescent athletes

2021 ◽  
Vol 10 (4) ◽  
pp. 30-36
Author(s):  
A. A. Makarova ◽  
O. A. Kharkova
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Reaction Time ◽  
Cognitive Behavioral Therapy ◽  
Behavioral Therapy ◽  
Cognitive Behavioral ◽  
Adolescent Athletes ◽  
Personal Anxiety ◽  
The Central Nervous System ◽  
High Level

Objective: to study the role of personal anxiety in the development of psychophysiological indicators in adolescent athletes.Materials and methods. To study the prevalence of high levels of personal anxiety (hereinafter — LT), as well as to determine the characteristics of psychophysiological indicators, the study involved 23 teenagers — boys and girls who were representatives of different sports. Using the device for psychophysiological testing UPFT-1/30 “Psychophysiologist”, indicators of simple visual-motor reaction and the level of LT on the Spielberg scale were obtained. To assess the impact of changes in high LT levels on psychophysiological indicators, 14 adolescent athletes with a high level of personal anxiety were selected and then divided into 2 groups. The experimental group included adolescents who wanted to participate in an experiment on the use of cognitive behavioral therapy techniques to correct high LT levels; the control group included adolescents with high LT levels who were not trained in cognitive behavioral therapy techniques.Results. Every third adolescent athlete had a high level of LT. Adolescent athletes with a high LT level, in contrast to adolescents with an optimal LT level, were less efficient, and, despite a shorter minimum reaction time, made more mistakes. The dynamics of psychophysiological indicators were observed both in the group with intervention and in the group where no cognitive behavioral therapy techniques were performed; however, after studying the difference in the physiological parameters of the central nervous system in the group where there was a change in LT, and in the group where LT either did not change or increased, we found positive changes. Changes in the LT level led to a decrease in the average reaction time, the minimum reaction time, and an increase in the level of stability of reactions.Conclusions. A high level of LT affects the psychophysiological parameters of the central nervous system in adolescent athletes. The use of cognitive behavioral therapy techniques to normalize the LT level of adolescent athletes leads to an improvement in the physiological parameters of the central nervous system.

Blood Pressure and Pulse Rate in the Foetal Sheep

1945 ◽  
Vol 22 (1-2) ◽  
pp. 63-74
Author(s):  
JOSEPH BARCROFT ◽  
D. H. BARRON
Keyword(s):  
Blood Pressure ◽  
Central Nervous System ◽  
Nervous System ◽  
Pulse Rate ◽  
Umbilical Artery ◽  
The Central Nervous System ◽  
The Right ◽  
First Moment ◽  
Left Vagus ◽  
Stimulation Of

1. A method (the needle method) is described for the measurement of the pressure in the stream going through a vessel. 2. In the foetal sheep the needle method applied to the umbilical artery gives substantially the same results as the mercurial manometer applied to the carotid, until about half-way through the gestation period. 3. As gestation proceeds the needle method applied at the first moment at which it can be applied to the umbilical artery (or a branch) gives readings substantially lower, and increasingly lower as gestation proceeds, than does the mercurial manometer read at the first moment at which it can be read. 4. The discrepancy is due to the sum of a number of causes which are discussed, but of these the most important is an actual rise of pressure between the time of delivery and the completion of the dissections contingent on the use of the mercurial manometer. 5. The cause of this is not at present demonstrated, but either or both of two factors may be concerned: (a) a dulling of the central nervous system which weakens the depressor reflex; (b) the establishment of a greater degree of vasomotor tone consequent on the bombardment of the central nervous system with sensory stimuli. 6. The pulse rates in utero and just after delivery of the foetus into a saline bath at 39-40°C. (the umbilical circulation being unimpaired) are not significantly different. 7. The pulse rate quickens up to the 70th-80th day, after which it becomes slower as gestation proceeds. 8. If both vagi be severed, the pulse rate te to quicken throughout gestation. The pulse, therefore, comes increasingly under vagus inhibition from the 80th-90th day onwards. 9. Even after the vagi have been cut after the 120th day (it has not been tried before) adrenalin in sufficient quantity will cause a further quickening of the pulse. 10. The earliest date at which stimulation of the peripheral end of the right vagus was observed to slow the heart was the 77th day. On the 85th day peripheral stimulation of the left vagus also failed, but succeeded on the 101st day. 11. Central stimulation of the left vagus, with the right vagus intact, produced slowing on the 77th day. 12. Slowing of the heart synchronous with rise of arterial pressure has been observed on the 111th day. 13. Slowing of the heart which bears evidence of being reflex has been obtained by raising the blood pressure (clamping the cord) on the 121st day and by injection of adrenalin on the 118th day. 14. Approaching term both the carotid sinus and cardiac depressor mechanisms are functional. 15. Lowering of the blood pressure as the result of stimulation of the central end of the vagus and with both vagi severed can be demonstrated late in gestation.

Simple Reaction Time and Response Sets

1966 ◽  
Vol 8 (3) ◽  
pp. 239-244 ◽  
Author(s):  
Stanley M. Moss
Keyword(s):  
Reaction Time ◽  
Spatial Relationship ◽  
Induced Response ◽  
Specific Stimulus ◽  
Response Sets ◽  
Visual Reaction ◽  
Response Alternatives ◽  
The Individual ◽  
The Right ◽  
Measured Response

This study was concerned with the effects of induced response inhibition on simple visual reaction time. Ten Ss were confronted with up to four response alternatives (fingers of the right hand), one of which was the required response. Each of these responses was associated with a specific stimulus. Three response ensemble conditions were used: I—within a block of trials only one light appeared, II—within a block of trials one of two possible lights appeared, III—within a block of trials one of the four possible lights appeared. Under all conditions Ss were given more than adequate time to extract the appropriate response from the remaining responses in the ensemble prior to the time that they were required to make the response. A significant interaction was found between the individual responses and response ensembles. These results were explained in terms of the contextual effects of the unused responses within the different ensemble conditions. Additional data indicated that these effects reflect a spatial relationship to responses being measured. Unused responses that are more proximal to the measured response depress the reactions to that response as compared to unused responses that are more distant.

Extracranial Metastases of Oligodendroglioma

Neurosurgery ◽  
1981 ◽  
Vol 8 (3) ◽  
pp. 391-396 ◽  
Author(s):  
Nelson G. Ordóñez ◽  
Alberto G. Ayala ◽  
Milam E. Leavens
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Lymph Nodes ◽  
Masseter Muscle ◽  
Lumbar Vertebrae ◽  
Cervical Lymph Nodes ◽  
Extraneural Metastases ◽  
The Central Nervous System ◽  
The Right ◽  
Extracranial Metastases

Abstract The case of a 33-year-old woman with oligodendroglioma with extraneural metastases involving the masseter muscle, the cervical lymph nodes, the lumbar vertebrae, and the right iliac bone is described. Oligodendroglioma with metastases outside the central nervous system is extremely rare, and only a very few cases have been reported.

Cleidocranial Dysplasia with Neonatal Death Due to Central Nervous System Injury in Utero: Case Report and Literature Review

1998 ◽  
Vol 1 (4) ◽  
pp. 314-318 ◽  
Author(s):  
Calvin E. Oyer ◽  
Nina G. Tatevosyants ◽  
Selina C. Cortez ◽  
Abby Hornstein ◽  
Michael Wallach
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
In Utero ◽  
Cleidocranial Dysplasia ◽  
Related Condition ◽  
Wormian Bones ◽  
Bilateral Absence ◽  
The Central Nervous System ◽  
The Right ◽  
A Minor

Cleidocranial dysplasia (CCD), an uncommon disorder involving membranous bones, is rarely lethal in early life. The calvaria is defective and wormian bones are present. Abnormalities of the clavicles vary in severity from a minor unilateral defect to bilateral absence. This report concerns pre- and postmortem anatomical and radiological findings in a 15-day-old female neonate with CCD. Her postnatal course was characterized by seizures and recognition of hydrocephalus during the first day of life. The calvaria was hypoplastic with numerous wormian bones. A pseudofracture of the right clavicle was present. Hydrocephalus was present in the brachycephalic brain which had a severely thinned cerebral cortex. Hemosiderin in the ventricular lining and marked subependymal gliosis were interpreted as evidence of old intraventricular hemorrhage that had occurred in utero. A CCD-related condition, Yunis-Varon syndrome (YVS), is noted for early lethality and for developmental and secondary abnormalities of the central nervous system. The present case only partially matches the phenotype of YVS and might represent a part of a spectrum of phenotypic variants ranging from viable CCD to lethal YVS.

scholarly journals The effect of female volleyball players’ leg volume and mass on balance and reaction timeBayan voleybolcuların bacak hacim ve kütlesinin denge ve reaksiyon zamanına etkisi

2015 ◽  
Vol 12 (2) ◽  
pp. 1296 ◽  
Author(s):  
Serkan İbiş ◽  
Rüçhan İri ◽  
Zait Burak Aktuğ
Keyword(s):  
Reaction Time ◽  
Significant Relationship ◽  
Dynamic Balance ◽  
Average Weight ◽  
Average Height ◽  
Measuring Device ◽  
Balance System ◽  
The Third ◽  
Volleyball Players ◽  
Visual Reaction

<p>In this study, it is aimed to investigate the relationship between leg volume - mass and balance – reaction time of the third league female volleyball players. 20 volunteer third league volleyball players, who are still active, are participated in this study. The average age of participant female volleyball players is 23,20±3,42 years, average height 176,30±7,78 cm, average weight 65.11±8,22 kg. Participant female volleyball players’ leg volume by Frustum method, leg mass by Hanavan method, static and dynamic balance by Biodex Balance System and visual reaction time by MOART Lafayette Reaction Measuring Device were measured. In analyzing the relation among the measurements, Pearson Product Moment Correlation coefficient was used. As a result of analysis of the obtained data; significant moderate correlation was found between the legs mass and dynamic balance (r=0.654, p&lt;0,05). It was determined with a highly significant relationship between leg mass and foot volume (r=0.913, p&lt;0,01) and foot mass (r=0.917, p&lt;0,01). Also a significant relationship was found between leg volume and foot volume (r=0.800, p&lt;0,01) and foot mass (r=0.644, p&lt;0,05).</p><p>Consequently; it can be said that there is a highly significant relationship between leg volume-mass and foot volume-mass, and there is a relationship between dynamic balance and leg mass of the third league female volleyball players.</p><p> </p><p><strong>Özet</strong></p><p>Bu çalışmada, üçüncü lig bayan voleybolcuların bacak hacimleri ile denge ve reaksiyon zamanları arasındaki ilişkinin incelenmesi amaçlanmıştır. Çalışmaya üçüncü ligde oynayan toplam 20 gönüllü bayan voleybolcu katılmıştır. Çalışmaya katılan bayan voleybolcuların yaş ortalamaları 23,20±3,42 yıl, boy ortalamaları 176,30±7,78 cm, ağırlık ortalamaları 65.11±8,22 kg’dır. Çalışmada katılan bayan voleybolcuların bacak hacmi Frustum yöntemi, bacak kütlesi Hanavan yöntemi, statik-dinamik denge ölçümü Biodex Denge Sistemi ve görsel reaksiyon zamanı ölçümleri MOART Lafayette Reaksiyon Ölçüm cihazı ile ölçülmüştür. Elde edilen ölçümler arasındaki ilişkiyi belirlemek amacıyla Pearson Çarpımlar Moment Korelasyon katsayısı kullanılmıştır. Elde edilen verilerin analizi sonucunda; bacak kütlesi ile dinamik denge arasında orta düzeyde (r=0.654, p&lt;0,05), bacak kütlesi ile ayak hacmi (r=0.913, p&lt;0,01) ve ayak kütlesi (r=0.917, p&lt;0,01) arasında yüksek düzeyde ilişki bulunurken; bacak hacmi ile ayak hacmi (r=0.800, p&lt;0,01) ve ayak kütlesi (r=0.644, p&lt;0,05) arasında ilişki tespit edilmiştir.</p><p>Sonuç olarak; çalışmadaki bulgular 3. Ligde oynayan bayan voleybolcuların bacak hacmi ve bacak kütlesinin ayak kütlesi ve ayak hacmi ile yüksek düzeyde ilişki gösterdiği, dinamik dengenin de bacak kütlesiyle ilişkili olduğu tespit edilmiştir.</p>

scholarly journals Analysis of perceived stress, cardiovascular and central nervous system changes before and after menstruation in the age group 18-22 years

2017 ◽  
Vol 5 (8) ◽  
pp. 3644
Author(s):  
Amita M. Pardeshi
Keyword(s):  
Blood Pressure ◽  
Central Nervous System ◽  
Nervous System ◽  
Reaction Time ◽  
Perceived Stress ◽  
Pulse Rate ◽  
Premenstrual Syndrome ◽  
Age Group ◽  
Visual Reaction Time ◽  
Visual Reaction

Background: Premenstrual syndrome is a set of physical, behavioural or emotional symptoms that some women experience on regular basis in relation to menstruation. Premenstrual symptoms have been associated with perceived stress, and perceived stress is the strongest predictor of premenstrual syndrome. The purpose of this study was to investigate the premenstrual stress and its effect on cardiovascular system and sensorimotor association and processing capability of central nervous system.Methods: The present study was done in 60 healthy female volunteers in age group of 18-22 years. We measured following parameters during premenstrual and postmenstrual phases- pulse rate, blood pressure, weight, auditory and visual reaction time and perceived stress with the help of Cohen’s perceived stress scale.Results: The study revealed that significant increase was observed in perceived stress, pulse rate, blood pressure, weight, auditory reaction time (ART), and visual reaction time (VRT) during premenstrual period as compared to postmenstrual period.Conclusions: These changes could be attributed to fluid and salt retention due to ovarian steroids and to exaggerated response to hormonal changes leading to decrease in the processing capability of central nervous system. It is not clear how stress may contribute to increased pre-menstrual symptom severity, although stress-induced changes in ovarian hormone levels and neurotransmitters may be involved.

Disorders of hearing and balance

1998 ◽  
Vol 8 (1) ◽  
pp. 31-43
Author(s):  
Linda M Luxon
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Hearing Loss ◽  
Great Britain ◽  
Hearing Impairment ◽  
Elderly Population ◽  
The Elderly ◽  
Sensory Inputs ◽  
The Central Nervous System ◽  
Eighth Decade

The cochleovestibular system is unique in that the peripheral labyrinth subserves two senses, hearing and balance, while the central auditory and vestibular connections diverge within the central nervous system and interact with a multiplicity of information from other sensory inputs. During the seventh decade of life, approximately 40% of people in Great Britain have a significant hearing impairment while in the eighth decade of life this figure rises to 60%. By the age of 65, 35% of people have experienced episodes of dizziness and by the age of 80, two-thirds of women and one-third of men have suffered episodes of vertigo. The elderly population is reported to be increasing by approximately 30% every 20 years and the prevalence of vertigo and hearing loss has been reported to rise in parallel with advancing age.

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