scholarly journals Smartphone deprivation alters cortical sensorimotor processing of the hand

2021 ◽  
Author(s):  
Arko Ghosh
Keyword(s):  
Tactile Stimulation ◽  
Cortical Plasticity ◽  
Daily Life ◽  
The Body ◽  
Adult Brain ◽  
Superior Performance ◽  
Control Group ◽  
Recent Experience ◽  
Sensorimotor Processing ◽  
The Right

Brain areas representing the body can change in response to behavioral alterations. This idea is firmly established for the adult cortex in response to extraordinary alterations such as traumatic amputation or casting of the limb. Here we address how adult cortical sensorimotor processing alters in response to a subtle perturbation in the form of smartphone deprivation lasting for ~7 days. We quantified the sensorimotor processes associated with the fingertips before and after the deprivation in right-handed smartphone users. The measurements were contrasted with those of a control group with unperturbed smartphone behavior. First, smartphone tapping speed in daily life became slower after the deprivation. Second, according to reaction time tests conducted in the laboratory the asymmetrically superior performance of the right vs. left thumb was eroded by the deprivation. Third, according to EEG measurements at physical rest, tactile stimulation at the right thumb tip resulted in smaller signal amplitudes after the deprivation. Moreover, the EEG measurements during smartphone use revealed larger signal amplitudes for tactile stimulation at the right little fingertip after the deprivation. We show that cortical plasticity can occur by merely disengaging from a common day-to-day behavior. We suggest that in daily life the adult brain continuously and selectively updates its sensorimotor processing according to recent experience.

scholarly journals Assessment of Postural Balance in Women Treated for Breast Cancer

Medicina ◽  
2020 ◽  
Vol 56 (10) ◽  
pp. 505
Author(s):  
Iwona Głowacka-Mrotek ◽  
Magdalena Tarkowska ◽  
Tomasz Nowikiewicz ◽  
Magdalena Hagner-Derengowska ◽  
Aleksander Goch
Keyword(s):  
Breast Cancer ◽  
Postural Balance ◽  
Path Length ◽  
Muscle Tension ◽  
The Body ◽  
Control Group ◽  
Foot Pressure ◽  
Static Test ◽  
Healthy Female ◽  
The Right

Background and objectives: Surgery is the primary and most effective treatment of breast cancer. Unilateral mastectomy disrupts the distribution of muscle tension between the right and the left sides of the body. The aim of the study was to evaluate postural balance in patients treated for breast cancer by mastectomy. Materials and methods: A controlled clinical study was conducted on 90 patients who have undergone surgical treatment for breast cancer (mastectomy) 5–6 years prior (Breast Group—BG). The control group (CG) consisted of 74 healthy female volunteers. Analysis of balance was performed using the Alfa stabilography platform. A static test (Romberg’s test) with open and closed eyes was used to assess balance. The following balance parameters were analyzed: path length, statokinesigram area, parameters of deflection and velocity of the foot pressure center. Results: The study demonstrated that patients from BG (5–6 years after surgery) obtained worse results in both tests with open (maximum back deviation, maximum forward deviation, average Y deviation, average Y velocity, path length and path surface area) (p < 0.05) as well as with closed eyes (maximum backward deviation, maximum forward deviation, mean Y deviation and path length) (p < 0.05). Conclusions: Our study demonstrated that women 5–6 years after surgery for breast cancer have impaired balance compared to healthy women, despite physiotherapy.

Lateral Asymmetry and Tactile Sensitivity

1988 ◽  
Vol 67 (1) ◽  
pp. 55-62 ◽  
Author(s):  
Karen L. Kaplan-Solms ◽  
Michael M. Saling
Keyword(s):  
Tactile Stimulation ◽  
The Body ◽  
Lateral Distribution ◽  
Tactile Sensitivity ◽  
Review Of The Literature ◽  
Lateral Asymmetry ◽  
Leftward Bias ◽  
Experimental Support ◽  
Female Breast ◽  
The Right

Weinstein found in 1963 that the left female breast is more sensitive to tactile stimulation than the right breast. Saling and Cooke in 1984 hypothesized that this asymmetry in breast sensitivity underlies the well-documented leftward bias in maternal cradling behaviour, which is independent of manual specialization. Our interest in the Saling and Cooke hypothesis led to an attempt to replicate Weinstein's 1963 study. His findings were not supported. Further, a review of the literature on the lateral distribution of cutaneous thresholds showed that there is little experimental support for the widely held belief that the left side of the body is uniformly more sensitive than the right.

Effectiveness study of “occupational connections” – A short-term, in-patient intervention for promotion functioning and participation in daily life of people with mental health conditions

2017 ◽  
Vol 41 (S1) ◽  
pp. S380-S381
Author(s):  
L. Lipskaya-Velikovsky ◽  
T. Krupa ◽  
M. Kotler
Keyword(s):  
Mental Health ◽  
Functional Capacity ◽  
Daily Life ◽  
Well Being ◽  
The Body ◽  
Health Conditions ◽  
Hospital Treatment ◽  
Control Group ◽  
Study Group ◽  
Mental Health Conditions

ObjectivesMental health conditions (MHC) have been associated with restrictions in daily life participation and functioning affecting health and well-being. Substantial numbers of people with MHC experience hospitalizations, however, there is limited evidence supporting functional interventions in the in-patient setting to promote recovery. The OC is an intervention implemented during sub-acute hospitalization, which attempts to promote activity and participation of people with MHC, both during the in-patient stay and upon return to the community, with a view to enabling recovery. To facilitate its implementation, we investigate the OC effectiveness.AimsInvestigate the OC contribution to cognition, symptoms and functional capacity among inpatients with schizophrenia.MethodsThis is a quasi-experimental, prospective, pre/post-designed study with convenience sampling. Inpatients with schizophrenia were enrolled into the study group participating in the OC intervention (n = 16); or the control group participating in hospital treatment as usual (n = 17). The study participants completed evaluations at baseline and at discharge or after 10 weeks with: Neurocognitive State Examination, Trail Making Test, Ray Complex Figure, and Category Fluency Test for aspects of cognition; Positive and Negative Syndrome Scale for symptoms severity, and Observed Tasks of Daily Living-Revised for functional capacity.ResultsStatistically significant improvement in cognitive functioning, symptoms severity and functional capacity was found in the study group after the intervention. These changes were not observed in the control group.ConclusionThe results support the OC effectiveness for cognitive and functional capacity improvement and symptomology relief. The findings advance the body of evidence for functional interventions in hospital settings.Disclosure of interestThe authors have not supplied their declaration of competing interest.

scholarly journals OPERATION STRESS AND ITS INFLUENCE ON THE SYSTEM CHANGES IN CASE OF ABDOMINAL COMBINED TRAUMA (EXPERIMENTAL RESEARCH)

2018 ◽  
Vol 17 (2) ◽  
pp. 31-36
Author(s):  
V. O. Krylyuk ◽  
V. K. Hrodetsʹkyy ◽  
S. O. Sokolʹnyk ◽  
O. V. Fedosyeyeva ◽  
H. Yu. Tsymbalyuk
Keyword(s):  
Superoxide Dismutase ◽  
Abdominal Cavity ◽  
The Body ◽  
Control Group ◽  
Systemic Response ◽  
Antioxidant Protection ◽  
Operational Stress ◽  
Experimental Animals ◽  
Ischemic Reperfusion ◽  
The Right

The aim of the study was to study the possibility of using a hemostatic biological haemostatic to stop bleeding from the parenchymal organs of the abdominal cavity using the surgical method of Damage control. The experiment was performed on laboratory rats that were divided into three groups: a control group, a group where, after injury, the liver wound was sutured with standard sutures and a group where the wound was plastered with a biological hemostatic agent. In order to determine the operational stress, we studied the enzymatic link of antioxidant protection - the level of catalase and superoxide dismutase. To study the indices in all experimental animals, the following tissues were taken: the lower lobe of the right lung, the proportion of the liver where the wounds were applied, the gastrocnemius muscle below the harness and the right kidney. The control points of the study were 1, 3 and 7 days after injury. During working with experimental animals, they adhered to all ethical norms established by international rules. The effect of operational stress on the enzymatic component of antioxidant protection in the tissues of the kidneys, liver, lungs and muscles was studied in the study of the combined trauma of the abdominal cavity complicated by massive bleeding and ischemic-reperfusion syndrome of the extremity. The changes in the indices of superoxide dismutase and catalase were studied. The following result was obtained: tamponing the liver wound with chitosan was a quick and effective means of temporary bleeding stop. At the same time, the duration of the operation was reduced from 19.8 to 12.5 minutes (by 36.8%) (p <0.05). Also, the level of catalase and superoxide dismutase was significantly lower in the group where the chitosan of the liver injury was used in comparison with the study group where standard stitches were applied. The deviations, which are determined in lung, liver, kidney and muscle tissues in RG-1 are evidence of the depth of their lesion and dysfunction, is a favorable factor for the further development of the triggering mechanisms of the systemic response of the body to inflammation and multiple organ failure. In contrast to the RG-2 rapid development of the systemic response was avoided. We can assume that ischemic-reperfusion syndrome is a stimulating factor in the development of systemic changes, although this statement requires further proof. It is also important to further prospective study of this topic in terms of the following questions: what effect has chitosan on liver tissue with prolonged exposure (more than 2 days) and what effect does additional injection of infusion solutions have as an agent for the treatment of hypovolemic shock.

scholarly journals Differential changes in self-reported aspects of interoceptive awareness through 3 months of contemplative training

2017 ◽  
Author(s):  
Boris Bornemann ◽  
Beate M. Herbert ◽  
Tania Singer
Keyword(s):  
Discriminant Validity ◽  
Daily Life ◽  
Self Regulation ◽  
Well Being ◽  
Body Awareness ◽  
The Body ◽  
Self Report ◽  
Interoceptive Awareness ◽  
Control Group ◽  
Convergent And Discriminant Validity

Interoceptive body awareness (IA) is crucial for psychological well-being and plays an important role in many contemplative traditions. However, until recently, standardized self-report measures of IA were scarce, not comprehensive, and the effects of interoceptive training on such measures were largely unknown. The Multidimensional Assessment of Interoceptive Awareness (MAIA) questionnaire measures IA with eight different scales. In the current study, we investigated whether and how these different aspects of IA are influenced by a 3-months contemplative intervention in the context of the ReSource project, in which 148 subjects engaged in daily practices of “Body Scan” and “Breath Meditation.” We developed a German version of the MAIA and tested it in a large and diverse sample (n = 1,076). Internal consistencies were similar to the English version (0.56– 0.89), retest reliability was high (r s: 0.66–0.79), and the MAIA showed good convergent and discriminant validity. Importantly, interoceptive training improved five out of eight aspects of IA, compared to a retest control group. Participants with low IA scores at baseline showed the biggest changes. Whereas practice duration only weakly predicted individual differences in change, self-reported liking of the practices and degree of integration into daily life predicted changes on most scales. Interestingly, the magnitude of observed changes varied across scales. The strongest changes were observed for the regulatory aspects of IA, that is, how the body is used for self-regulation in daily life. No significant changes were observed for the Noticing aspect (becoming aware of bodily changes), which is the aspect that is predominantly assessed in other IA measures. This differential pattern underscores the importance to assess IA multi-dimensionally, particularly when interested in enhancement of IA through contemplative practice or other mind–body interventions.

scholarly journals Adaptive possibilities of the cardiovascular system in adolescents with non-inflammatory diseases of the myocardium, taking into account the functioning of the right ventricle of the heart

2019 ◽  
Keyword(s):  
Physical Activity ◽  
Right Ventricle ◽  
Cardiovascular System ◽  
Inflammatory Diseases ◽  
The Body ◽  
Control Group ◽  
Walk Test ◽  
Six Minute Walk Test ◽  
The Right ◽  
Minute Walk

Adaptation of the cardiovascular system to physical activity implies the development of functional or structural changes that should ensure the most efficient and economical use of energy during muscular contraction. The most studied data reactions in individuals engaged in various sports. The aim of our study was to study the functional changes of the heart, taking into account the functioning of the right and left ventricles of the heart and the adaptive capacity of the cardiovascular system in children with non-inflammatory diseases of the myocardium. Were examined 62 patients with non-inflammatory myocardial diseases, whose mean age was 14.56 ± 0.24 years. The control group consisted of 41 practically healthy peers. The functional state of the myocardium was assessed according to the results of the ultrasonic Doppler study of the heart in the “M” and “B” - modes, as well as in the mode of constant-wave and color scanning with a convex sensor using the standard method. To study tolerance to the minimum physical activity and its influence on the state of the cardiovascular system in children, a six-minute walk test was conducted. To assess the functional intensity of the cardiovascular system before and after the six-minute walk test, the following vegetative indices were calculated: an endurance coefficient according to the formula A. Quaasa and a double product. The vegetative Kerdo index and adaptation potential were calculated at rest. As a result of the study, it was found that in children with myocardial pathology, stress is observed in the adaptation mechanisms of the cardiovascular system, accompanied by a weakening of its functional capabilities and an increase in the work of the cardiac muscle at rest. This happens against the background of a decrease in the functioning of the left ventricle and an increase in the functioning of the right ventricle of the heart. These changes are accompanied by activation of the parasympathetic division of the autonomic nervous system in patients in all the studied groups, which indicates a more economical mode of functioning of the body systems.

scholarly journals Asymmetry of Musculature and Hand Grip Strength in Bodybuilders and Martial Artists

2020 ◽  
Vol 17 (13) ◽  
pp. 4695
Author(s):  
Anna Burdukiewicz ◽  
Jadwiga Pietraszewska ◽  
Justyna Andrzejewska ◽  
Krystyna Chromik ◽  
Aleksandra Stachoń
Keyword(s):  
Grip Strength ◽  
Physical Exertion ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
Hand Grip Strength ◽  
The Body ◽  
Control Group ◽  
Body Structure ◽  
Hand Grip ◽  
The Right

The functional preference for the upper limb influences the occurrence of bilateral differences in other segments of the human body. The aim of the study is to assess the influence of the applied fighting technique and targeted physical effort on the occurrence of asymmetry in body musculature and isometric strength in bodybuilders and competitors of selected martial arts. Academic athletes practicing judo (J), jiu-jitsu (JJ), and bodybuilding (BB) were examined. The control group (C) consisted of students who do not practice any sports. The assessment of the body structure was conducted through segmental bioelectrical impedance analysis. Moreover, the study took into account the measurements of left- and right-hand grip strength. In judo, the uneven physical exertion of the right and left sides of the body further increases both directional and absolute asymmetry. Bilateral asymmetry of musculature in jiu-jitsu competitors and bodybuilders occurs to a lesser extent. The control group was characterized by cross-asymmetry. So as to avoid the risk of injury of sportsmen, it is important to consistently supervise and correct their body structure, which also includes the symmetrical participation of the active muscle mass in particular segments. The symmetrisation process should be individualized since each particular sportsman has their own side-to-side body morphology.

Effects of Body Image on Tactile Sensitivity to a Tickle: A Study of Pregnancy

1979 ◽  
Vol 49 (2) ◽  
pp. 555-563 ◽  
Author(s):  
Vezio Ruggieri ◽  
Maria Milizia ◽  
M. Francesca Romano
Keyword(s):  
Body Image ◽  
Middle Class ◽  
Body Schema ◽  
The Body ◽  
Control Group ◽  
Tactile Sensitivity ◽  
Third Trimester ◽  
The Third ◽  
Actual Duration ◽  
The Right

A group of 20 middle-class women between 20 and 40 yr. of age and in the third trimester of pregnancy was compared with a control group of 20 non-pregnant women for cutaneous sensitivity (to a tickle) and for modifications of body schema which were hypothesized to occur during pregnancy. Latency and actual duration were considered in the perception of the tickle. Body schema were studied using two of Fisher's tests, Body Prominence and Body Carhexis. Pregnancy leads to modifications in sensitivity to tickle, specifically with regard to the right half of the body and to some extent in body schema.

scholarly journals The effect of 12-week regular zumba exercises on antropometric properties

2020 ◽  
Vol 17 (1) ◽  
pp. 154-161
Author(s):  
Akan Bayrakdar ◽  
Hilal Kılınç ◽  
İdris Kayantaş ◽  
Mehmet Günay
Keyword(s):  
Body Weight ◽  
Bioelectrical Impedance ◽  
English Summary ◽  
The Body ◽  
Control Group ◽  
Fat Percentage ◽  
Hip Circumference ◽  
Significant Difference ◽  
Left Calf ◽  
The Right

The aim of this study was to analyze the effects of 12-week regular zumba exercises on antropometric properties. A total of 20 women who participated in the study were consisted of 10 for experimental group and 10 for control group with a mean age of 38.25 ± 4.22 who performed regular zumba exercise for 12 weeks. In the research, two measurements were taken as pre and post tests. In the study, body fat percentage measurements were taken by bioelectrical impedance analyses method and ciccumference measurements were taken by tape measure. The data obtained at the end of the research were evaluated in SPSS program. Arithmetic mean, standard deviation values of the measurements, intra and intergroup differences and percentage development differences were obtained. According to the findings of the research, a significant difference of p<0.001 value has been detected, as a result of the measurements taken for the body weight, BMI, BFB, waist, hip, abdomen, chest, lower chest, right leg, left leg, right calf, left calf, right arm and left arm measurements. With regard to the hip circumference, no significant difference has been detected between the groups. The change rates were observed within a 12-week period are as follows: 4,80% in the body weight, 4,87% in BMI, 5,75% in the BFP, 3,82% in the waist, 3,91% in the hip, 3,91% in the abdomen, 3,88% in the hip, 2,69% in the chest, 4,01% in the lower chest, 5,07% in the right leg, 4,76% in the left leg, 5,44% in the right calf, 5% in the left calf, 4,41% in the right arm and 3,78% in the left arm. A significant difference was found at the p <0.001 level in the first and last measurements of all variables of Zumba group. In conclusion, it can be said that 12-week regular Zumba exercises have effects on the reduction of Antropemetric properties. ​Extended English summary is in the end of Full Text PDF (TURKISH) file.   Özet Bu araştırma düzenli zumba egzersizlerinin antropometrik özellikler üzerine etkisini incelemek amacıyla yapılmıştır.  Araştırmaya 12 hafta düzenli zumba egzersizi yapan ve yaş ortalaması 38,25±4,22 olan 10 deney grubu ve 10 kontrol grubu olmak üzere toplam 20 kadın katılmıştır. Araştırmada ön ve son test olmak üzere 2 ölçüm alınmıştır. Araştırmada vücut yağ yüzdesi ölçümleri biyoelektrik impedans yöntemi ve çevre ölçümleri mezure ile alınmıştır. Araştırma sonunda elde edilen veriler SPSS programında değerlendirilmiştir. Ölçümlerin aritmetik ortalaması, standart sapma değerleri, ölçümler sonucu oluşan grup içi, gruplar arası ve yüzdelik gelişim farkları alınmıştır. Araştırmanın bulgularına göre; vücut ağırlığı, BKİ, VYY, bel, kalça, karın, basen, göğüs, göğüs altı, sağ bacak, sol bacak, sağ baldır, sol baldır, sağ kol ve sol kol çevresinde ölçümler sonucunda p<0,001 düzeyinde anlamlı fark vardır. 12 haftalık periyotta deney grubunun vücut ağırlığında %4,80, BKİ %4,87, VYY %5,75, bel %3,82, kalça %3,91, karın %4,36, basen %3,88, göğüs %2,69, göğüs altı %4,01, sağ bacak %5,07, sol bacak %4,76, sağ baldır %5,42, sol baldır %5, sağ kol %4,41 ve sol kol %3,78 oranında gelişim görünmektedir. Zumba grubunun tüm değişkenlerinin ilk ve son ölçümlerinde p<0,001 düzeyinde anlamlı farklılık bulunmuştur. Sonuç olarak; 12 haftalık zumba egzersizlerinin antropometrik özellikler üzerine etkisi olduğu söylenebilir.E

scholarly journals Spatial tuning of electrophysiological responses to multisensory stimuli reveals a primitive coding of the body boundaries in newborns

2021 ◽  
Vol 118 (12) ◽  
pp. e2024548118
Author(s):  
Irene Ronga ◽  
Mattia Galigani ◽  
Valentina Bruno ◽  
Jean-Paul Noel ◽  
Andrea Gazzin ◽  
...  
Keyword(s):  
Tactile Stimulation ◽  
Body Position ◽  
The Body ◽  
Spatial Modulation ◽  
Control Group ◽  
Sensory Environment ◽  
Adult Participants ◽  
Electrophysiological Responses ◽  
External Stimuli ◽  
Electrophysiological Mechanism

The ability to identify our own body and its boundaries is crucial for survival. Ideally, the sooner we learn to discriminate external stimuli occurring close to our body from those occurring far from it, the better (and safer) we may interact with the sensory environment. However, when this mechanism emerges within ontogeny is unknown. Is it something acquired throughout infancy, or is it already present soon after birth? The presence of a spatial modulation of multisensory integration (MSI) is considered a hallmark of a functioning representation of the body position in space. Here, we investigated whether MSI is present and spatially organized in 18- to 92-h-old newborns. We compared electrophysiological responses to tactile stimulation when concurrent auditory events were delivered close to, as opposed to far from, the body in healthy newborns and in a control group of adult participants. In accordance with previous studies, adult controls showed a clear spatial modulation of MSI, with greater superadditive responses for multisensory stimuli close to the body. In newborns, we demonstrated the presence of a genuine electrophysiological pattern of MSI, with older newborns showing a larger MSI effect. Importantly, as for adults, multisensory superadditive responses were modulated by the proximity to the body. This finding may represent the electrophysiological mechanism responsible for a primitive coding of bodily self boundaries, thus suggesting that even just a few hours after birth, human newborns identify their own body as a distinct entity from the environment.

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