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Start Over Rights http://creativecommons.org/licenses/by-nc-sa/4.0/ Data provider Academy of Sciences Library/Knihovna Akademie věd ČR

2802. Attention deficit/hyperactivity disorder (ADHD) is associated with altered heart rate asymmetry

Creator:
Ingrid Tonhajzerová, Igor Ondrejka, Farský, I., Višňovcová, Z., Mešťaník, M., Michal Javorka, Alexander Jurko, and Andrea Čalkovská
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, porucha pozornosti spojená s hyperaktivitou, srdeční rytmus, attention deficit hyperactivity disorder, heart rate, ADHD, heart rate asymmetry, heart rate variability, cardiac autonomic regulation, nonlinear analysis, 14, and 612
Language:
English
Description:
Attention deficit/hyperactivity disorder (ADHD) is associated with complex neurocardiac integrity. We aimed to study heart rate time asymmetry as a nonlinear qualitative feature of heart rate variability indicating complexity of cardiac autonomic control at rest and in response to physiological stress (orthostasis) in children suffering from ADHD. Twenty boys with ADHD and 20 healthy age-matched boys at the age of 8 to 12 years were examined. The continuous ECG was recorded in a supine position and during postural change from lying to standing (orthostasis). Time irreversibility indices - Porta’s (P%), Guzik’s (G%) and Ehlers’ (E) - were evaluated. Our analysis showed significantly reduced heart rate asymmetry indices at rest (P%: 49.8 % vs. 52.2 %; G%: 50.2 % vs. 53.2 %; p<0.02), and in response to orthostatic load (P%: 52.4 % vs. 54.5 %, G%: 52.3 % vs. 54.5 %; p<0.05) associated with tachycardia in ADHD children compared to controls. Concluding, our study firstly revealed the altered heart rate asymmetry pattern in children suffering from ADHD at rest as well as in response to posture change from lying to standing (orthostasis). These findings might reflect an abnormal complex cardiac regulatory system as a potential mechanism leading to later cardiac adverse outcomes in ADHD., I. Tonhajzerová, I. Ondrejka, I. Farský, Z. Višňovcová, M. Mešťaník, M. Javorka, A. Jurko Jr., A. Čalkovská., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2803. Attention discrimination: theory and field experiments

Creator:
Bartoš, Vojtěch, Bauer, Michal, Chytilová, Julie, Matějka, Filip, Univerzita Karlova. Centrum pro ekonomický výzkum a doktorské studium, and Národohospodářský ústav (Akademie věd ČR)
Publisher:
CERGE-EI
Format:
electronic and 43 s. : il., tab.
Type:
model:monograph and TEXT
Subject:
Ekonomie, trh práce, trh bydlení, diskriminace, modelování a simulace, labor market, housing market, discrimination, modeling and simulation, 331.5, 332.85, 316.647.82, 519.86/.87, (048.8), 4, and 33
Language:
English and Czech
Description:
Vojtěch Bartoš ... [et al.]., Obsahuje bibliografii a bibliografické odkazy, České resumé, and born digital
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2804. Attosekundové elektronové pulzy pro zobrazování ultrarychlých procesů v nanosvětě

Creator:
Kozák, Martin
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
nanostruktury, pulzní generátory, nanostructures, pulse generators, 6, and 53
Language:
Czech and English
Description:
V tomto příspěvku shrneme současný vývoj v oblasti generace ultrakrátkých pulzů volných elektronů urychlených na vysoké energie, které budou v budoucnu sloužit ke studiu a zobrazování dynamiky elektronických excitací v pevných látkách a nanostrukturách. Za tímto účelem byly vyvinuty dvě optické metody využívající koherentní interakce mezi optickým polem a elektrony ve vakuu., In this contribution we review the recent progress in the field of ultrashort high-energy electron pulse generation for applications in time-resolved imaging of electronic dynamics in bulk solids and nanostructures. For this purpose, two novel experimental techniques have been developed based on the coherent interaction between optical fields and electrons in vacuum., Martin Kozák., and Obsahuje bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2806. Auditory modulation of the inferior temporal cortex neurons in rhesus monkey

Creator:
Kaposvári, P., Csibri, P., Csete, G., Tompa, T., and Sáry, GY.
Format:
print
Type:
article, články, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, opice, monkeys, inferotemporal cortex, auditory modulation, 14, and 612
Language:
English
Description:
We performed a systematic study to check whether neurons in the area TE (the anterior part of inferotemporal cortex) in rhesus monkey, regarded as the last stage of the ventral visual pathway, could be modulated by auditory stimuli. Two fixating rhesus monkeys were presented with visual, auditory or combined audiovisual stimuli while neuronal responses were recorded. We have found that the visually sensitive neurons are also modulated by audiovisual stimuli. This modulation is manifested as the change of response rate. Our results have shown also that the visual neurons were responsive to the sole auditory stimuli. Therefore, the concept of inferotemporal cortex unimodality in information processing should be re-evaluated., P. Kaposvári ... [et al.]., and Obsahuje bibliografii a bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2807. Augener and Co., London - neznámý Dvořákův nakladatel

Creator:
Matějčková, Helena
Format:
print, bez média, and svazek
Type:
article, studie, studies, model:article, and TEXT
Subject:
Dvořák, Antonín, 1841-1904, Augener & Co., 1881-1890, hudební nakladatelství a vydavatelství, hudební skladatelé, muzikologie, composers, music publishers, musicology, Londýn (Anglie), London (England), 78.01, 78.071.1, 655.413:78, and (048.8)
Language:
Czech
Description:
Studie Heleny Matějčkové se zabývá obchodními kontakty mezi hudebním skladatelem Antonínem Dvořákem a londýnským nakladatelem Augener & Co., In the course of research focusing on the history of publication of the works of A. Dvořák, printed editions have been discovered for five works that were issued in 1885 and 1886 by the London publishing house Augener & Co. The literature and sources concerning the life and work of A. Dvořák, however, make no mention of this publisher or of its editions of Dvořák’s music. The study maps the history and activity of the publishing house, devoting the greatest attention to describing the new sources and to consideration of the possible circumstances of their publication – Augener’s editions of Dvořák’s compositions appear to have been prepared on the basis of already issued printings by the Prague publisher F. A. Urbánek – and of aspects of publishing practice at the time, especially with regard to copyright issues., Helena Matějčková., Rubrika: Studie, and Anglické resumé na s. 265, anglický abstrakt 247.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2808. Augmentation of Analgesic Effect of Ibuprofen by Alprazolam in Experimental Model of Pain

Creator:
Tomáš Doležal and Miloslav Kršiak
Format:
print, bez média, and svazek
Type:
article, studie, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, fyziologie člověka, human physiology, Alprazolam, Benzodiazepines, Ibuprofen, g-aminobutyric acid (GABA), Pain, Writhing, Tail-flick, 14, and 612
Language:
English
Description:
The reports of analgesic effects of benzodiazepines are inconsistent. There is evidence of a hyperalgesic effect induced by activation of supraspinal GABAA receptors and an antinociceptive effect induced by activation of receptors located in the spinal cord (dorsal horns). The aim of the study was to discover whether the systemic administration of a benzodiazepine agent alprazolam increases the systemic analgesic efficacy of non-opioid analgesic ibuprofen. Experimental studies combining these agents have not yet been published. We used three experimental methods - writhing test (with acetic acid), tail-flick test and plantar test to assess analgesic action. The drugs were administered orally. Augmentation of the analgesic effect of ibuprofen by alprazolam was proved for the writhing test at a dose of 30 mg/kg of ibuprofen and alprazolam 1 mg/kg. The reaction time of the combination was significantly prolonged in comparison with ibuprofen alone. The results of the tail-flick test and plantar test were negative. The effect of ibuprofen was not enhanced by alprazolam in tests of acute thermal pain. Our results have demonstrated that the analgesic action of ibuprofen is only weakly enhanced by alprazolam., T. Doležal, M. Kršiak., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

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