Clinical Neuroscience

[Neurorehabilitation, neurology, rehabilitation medicine]

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

MAY 30, 2013

Clinical Neuroscience - 2013;66(05-06)

[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.]



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[The essential hypertension increases the risk of cognitive impairment even in symptom-free patients. Sixty, non-treated hypertensives were investigated (44±10.5 év) with nine pszichological tests, measuring the reaction time, attention, short and long-term memory, psychomotor speed etc. The results of nine tests were summarized and compared with those of age-matched control persons (n=98). All hypertensives had normal CT findings. The carotid intima-media-thickness, the arterial stiffness and the velocities in the middle cerebral arteries were also analyzed (with tilting table test). The sum of the results of cognitive tests was significantly worse than that of controls 14.8±7.1 vs. 27.8±5.5 p<0.0001. The results of intima-media thickness and stiffness measurements were also significantly worse compared with controls while the middle cerebral velocities did not differ. After one year antihypertensive therapy not only the improvement of blood pressure, intima-media thickness and stiffness values could be detected but also the the score of summarized cognitive tests improved (from 17.4±6.0 to 31.6±6.0 p<0.0001).]

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[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.]

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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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