Clinical Neuroscience

[Péter Halász, Róbert Bódizs: Dynamic structure of NREM sleep]

BORBÉLY Alexander

MAY 30, 2013

Clinical Neuroscience - 2013;66(05-06)



Further articles in this publication

Clinical Neuroscience

[Diseased brain, diseased nerves, diseased mind]


[Diseased brain, diseased nerves, diseased mind 2013;66(05-06)]

Clinical Neuroscience

[Neurorehabilitation, neurology, rehabilitation medicine]

URBÁN Edina, SZÉL István, FÁY Veronika, DÉNES Zoltán, LIPPAI Zoltán, FAZEKAS Gábor

[We have read several publications of great authority on the neurological profession in the last two years in which were expressed assessments of the current situation combined with opinions about neurology and the necessity to reorganize neurological patient care. These articles took up the question of neurorehabilitation too. The authors, who on a daily basis, deal with the rehabilitation of people with disabilities as a consequence of neurological conditions, summarize some important definitions of rehabilitation medicine and the present system of neurological rehabilitation, as it is defined by the rehabilitation profession.]

Clinical Neuroscience

[Targeted nanomedicine in diagnostics and therapy of neurological diseases]

FODOR Bertalan, BARKAI László, VALIKOVICS Attila

[The incidence of neurological diseases increases. The up to date diagnostics and therapeutics approaches require the cost-effective and personalized solutions. The nanomedicine now, - and likely more in the future - opens a new horizon in the treatment of neurological diseases. The nano-size materials have several advantages that make it their use as drug delivery systems, and imaging agent. Very important aspect is that these materials can transfer across the bloodbrain barrier. The functionalization and surface modification of nanomaterials enhances this effect. The authors summarize of neurological application of nanoparticles according to the current data. They provide an overview about the most common used nanomedical materials, targeted drug delivery mechanisms and nano-imaging opportunities.]

Clinical Neuroscience

[Effective, safe stroke prevention with novel oral anticoagulants in patients with atrial fibrillation. Focus on dabigatran]

SZAPÁRY László, FEHÉR Gergely, BOSNYÁK Edit, DELI Gabriella, CSÉCSEI Péter

[Non-valvular AF is the most common cardiac arrhytmia. Its incidence increases with age. AF is an independent risk factor for ischaemic stroke, representing a five times higher risk for it, associated with a high mortality rate. Beside AF, there are several other risk factors which influence the risk of stroke. Stroke risk calculator can be used to assess the risk of patient having a stroke. The most endangered group of patients with AF are those who have already suffered from cerebrovascular event. The only effective medication for prevention of stroke due to AF had been the application of vitamin K antagonists (VKA) which considerably decrease the rate of ischaemic event in a patient with AF providing that the INR is in the therapeutic range. VKA have several limitations of use in clinical practice and the fear of bleeding complications results an underusing of these drugs. Only 50% of all patients treated with VKA reaches the therapeutic range of INR. The breakthrough of prevention of stroke in recent years is undisputedly the coming out of novel oral anticoagulants (NOACs, thrombin and Xa-factor inhibitors). Recent studies suggest that these novel drugs prove the same efficacy as VKA drugs, furthermore dabigatran in a dose of 2×150 mg or apixaban in 2×5mg was statistically superior to warfarin in the prevention of stroke. NOACs have shown a large reduction in intracranial hemorrhage compared with warfarin. They are given as a fixed dose and do not require persistent monitoring making them much more convenient. NOACs at guidelines of European Society of Cardiology act as a preferable drugs in case of ischaemic stroke with AF. Probably the extended use of NOACs in clinical practice will be the mainstream of stroke prevention in the future.]

Clinical Neuroscience

[Spectral, phase-synchronization, and graph theoretical EEG changes related to mental arithmetics]

BOHA Roland, TÓTH Brigitta, GAÁL Zsófia Anna, KARDOS Zsófia, FILE Bálint, MOLNÁR Márk

[During mental arithmetic operations working memory playsan important role, but there are only few studies in which anattempt was made to separate this effect from the process ofarithmetics per se. In this study the effects of arithmetic onthe EEG of young adults (14 participants, six of themwomen, mean age 21.57 years, SD: 2.62) was investigatedduring a subtraction task in the θ(4-8 Hz) frequency band.Besides the power density spectrum analysis phasesynchrony based on recently developed graph theoreticalmethods were used and strength of local connections (clustercoefficient; C) and global interconnectedness of network(characteristic path length; L) were determined. Before thearithmetic task passive viewing (control situation) and anumber recognition paradigms were used. During the arith-metic task compared to the control situation significantlyincreasing phase synchrony and C values were found. L wassignificantly shorter (F(2, 26)=818.77, p<0.0001) only dur-ing the arithmetic task: this fact and the former two resultsimply that the network topology shifted towards the “smallworld” direction. Our findings concerning regionaldifferences confirm those reported earlier in the literature:compared to the control condition significant task-relatedincrease was found in C values in the parietal areas [moreexplicitly in the left side, (F(1, 13)=7.2020, p=0.0188)],which probably corresponds to stronger local connectionsand more synchronized (sub)networks. During the task con-dition significantly increased θband power; (F(1,13)=7.9708, p=0.0144) and decreased L values werefound in the left frontal region compared to the right side(F(1, 13)=6.0734, p=0.0284), which can also be interpret-ed as an indicator of optimized network topology ofinformation processing.]

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[The role of sleep in the relational memory processes ]

CSÁBI Eszter, ZÁMBÓ Ágnes, PROKECZ Lídia

[A growing body of evidence suggests that sleep plays an essential role in the consolidation of different memory systems, but less is known about the beneficial effect of sleep on relational memory processes and the recognition of emotional facial expressions, however, it is a fundamental cognitive skill in human everyday life. Thus, the study aims to investigate the effect of timing of learning and the role of sleep in relational memory processes. 84 young adults (average age: 22.36 (SD: 3.22), 21 male/63 female) participated in our study, divided into two groups: evening group and morning group indicating the time of learning. We used the face-name task to measure relational memory and facial expression recognition. There were two sessions for both groups: the immediate testing phase and the delayed retesting phase, separated by 24 hours. 84 young adults (average age: 22.36 (SD: 3.22), 21 male/63 female) participated in our study, divided into two groups: evening group and morning group indicating the time of learning. We used the face-name task to measure relational memory and facial expression recognition. There were two sessions for both groups: the immediate testing phase and the delayed retesting phase, separated by 24 hours. Our results suggest that the timing of learning and sleep plays an important role in the stabilizing process of memory representation to resist against forgetting.]

Lege Artis Medicinae

[A short chronicle of three decades ]


[Hungarian professional periodicals started quite late in European context. Their publish­ing, editing and editorial philosophy were equally influenced by specific historical and political situations. Certain breaking points of history resulted in termina­tion of professional journals (War of In­de­pendence 1848-1849, First and Se­cond World Wars), however there were pe­riods, which instigated the progress of sciences and founding of new scientific journals. Both trends were apparent in years after the fall of former Hungarian regime in 1990. The structure of book and journal publishing has changed substantially, some publishers fell “victim” others started successfully as well. The latters include the then-established publishing house Literatura Medica and its own scientific journal, Lege Artis Me­di­cinae (according to its subtitle: New Hun­garian Medical Herald) issued first in 1990. Its appearance enhanced significantly the medical press market. Its scientific publications compete with articles of the well-established domestic medical journals however its philosophy set brand-new trends on the market. Concerning the medical community, it takes on its problems and provides a forum for them. These problems are emerging questions in health care, economy and prevention, in close interrelation with system of public health institutions, infrastructure and situation of those providing individual health services. In all of them, Lege Artis Medicinae follows consequently the ideas of traditional social medicine.]

Journal of Nursing Theory and Practice

[The Effect of Asthma Bronchiale on Everyday life Activities Among Adolescents]

RÁCZ Viktória Kinga, HEGEDŰS Bianka Ágnes , SZEBENI-KOVÁCS Gyula , FERENCZY Mónika

[The aim of this study is to assess the relationship between the physical activity of asthmatics, sleep disorders, the extent of asthma treatment, and to assess the quality of life in terms of physical activity. We conducted our quantitative, cross-sectional survey between 2020-2021. In a non-randomized, comfort sampling the target group was defined as adolescents aged between 14–18 years, their diagnosis of asthma bronchiale had to be for at least 1 year ago. The data were collected by a self-prepared questionnaire, the domains included: socio-demographic questions related to physical activites, symptoms, sleep disorders, severity of asthma. We used miniAQLQ to assess quality of life. The statistical analysis were performed by using Microsoft Excel 2016 and SPSS v 24 programs. Descriptive statistics (mean, standard deviation, minimum, maximum), two-sample t-test, Chi-square test were performed. The mean age of the respondents was 16±1.51, 38% were boys and 62% were girls (N=105). There was no significant difference between physical activity and the frequency of seizures and sleep disorders (p>0.05). There is a significant difference between the genders and the symptoms increasing with intense exercise (p=0.02). We found significant correlation between the active participations in physical education classes and the severity of the disease (p=0.021). There is a significant correlation between moderate-, social activities and physical activity (p<0.05). Appropriate health education, recommendation in career choices as well as in physical activities done by nurses may lead to decrease in the number of suffocation attacks in cases of adolescents suffering from asthma bronchiale.]

Journal of Nursing Theory and Practice

[Non-pharmacological prevention and treatment for postoperative delirium in elderly patients with hip fracture - a systematic review]

VIDA Nóra, PAPP László

[Delirium is defined as a disturbance of consciousness and cognition that develops over a short period of time and fluctuates over time. During the last decade, the number of publications dealing with different aspects of delirium have been grown. The key points in most articles are pharmacological prevention and treatment, but because the rise of health care expenditures, all activities, which cost-effectively support the care process, is getting more and more important. The aim of the study: The aim of this research is to review the non-pharmacological prevention and treatment possibilities of delirium in elderly patients undergoing hip surgery. Systematic review, using articles published between 1999 and 2019 in PubMed and Wiley Online Libraries. Non-pharmacologic treatments significantly reduced the incidence (p=0.003–0.045) and duration (p=0.009–0.03) of delirium. The interventions also contributed to decrease the number of episodes (p=0.03), and to make the symptoms lighter. Early mobilisation and adequate fluid and electrolyte intake are key factors in reducing the incidence of delirium. Measuring oxygen saturation and support, appropriate nutrition, effective pain treatment, minimizing drug-interactions, maintaining good sleep and managing sensory dysfunctions have an effect on incidence, duration and severity of delirium.]

Clinical Neuroscience

REM sleep, REM parasomnias, REM sleep behaviour disorder

SZÛCS Anna , MUTTI Carlotta, PAPP Anikó, HALÁSZ Péter, PARRINO Liborio

We review the literature on REM parasomnias, and their the underlying mechanisms. Several REM parasomnias are consistent with sleep dissociations, where certain elements of the REM sleep pattern emerge in an inadequate time (sleep paralysis, hypnagogic hallucinations and cataplexy) or are absent/partial in their normal REM sleep time (REM sleep without atonia, underlying REM sleep behavior disorder). The rest of REM parasomnias (sleep related painful erection, catathrenia) may have other still unclear mechanisms. REM parasomnias deserve attention, because in addition to disturbing sleep and causing injuries, they may shed light on REM sleep functions as well as the heterogeneous etiologies of parasomnias. One of them, REM sleep behavior disorder has special importance as a warning sign of evolving neurodegenerative conditions mainly synucleinopathies (some cases synucleinopathies themselves) and it is a model parasomnia revealing that parasomnias may have by autoimmune, iatrogenic and even psychosomatic etiologies.