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Tytuł:
Synthesis of control unit with modified operational linear chains
Synteza jednostki sterującej z wykorzystaniem zmodyfikowanych liniowych łańcuchów operacyjnych
Autorzy:
Barkalov, A. A.
Titarenko, L.
Bieganowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/152657.pdf
Data publikacji:
2007
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
mikroinstrukcja
mikroprogramowy układ sterujący
CPLD
PAL
microinstruction
control memory
compositional microprogram control unit (CMCU)
Opis:
The method that considers optimization of the amount of PAL macrocells in the circuit of compositional microprogram control unit is proposed. The method is based on the introduction of additional microinstructions codes of the classes of pseudoequivalent operational linear chains. The proposed method is based on usage of the natural redundancy of embedded memory blocks which are used to implement the control memory. An example of application of proposed method is given.
W artykule przedstawiono metodę optymalizacji liczby makrokomórek PAL mikroprogramowalnego układu sterującego. Proponowana metoda wykorzystuje dodatkowe mikroinstrukcje zawierające kody pseudo-równoważnych liniowych łańcuchów operacyjnych. Rozwiązanie wykorzystuje osadzone bloki pamięci, które często pozostają niezagospodarowane, do implementacji pamięci sterownika. W artykule przedstawiono także przykład zastosowania omawianej metody.
Źródło:
Pomiary Automatyka Kontrola; 2007, R. 53, nr 5, 5; 15-17
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
When Affect Supports Cognitive Control – A Working Memory Perspective
Autorzy:
Kolańczyk, Alina
Powiązania:
https://bibliotekanauki.pl/articles/430633.pdf
Data publikacji:
2016-04-01
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
executive functions
affect
purposive activity
working memory
Opis:
The paper delineates a study of executive functions (EFs), construed as procedural working memory (WM), from a motivational perspective. Since WM theories and motivation theories are both concerned with purposive activity, the role of implicit evaluations (affects) observed in goal pursuit can be anticipated to arise also in the context of cognitive control, e.g., during the performance of the Stroop task. The role of positive and negative affect in goal pursuit consists in controlling attention resources according to the goal and situational requirements. Positive affect serves to maintain goals and means in the scope of attention (EF1), whereas negative affect activates the inhibition of non-functional contents, e.g., distractors and irrelevant objects (resulting in attention disengagement; EF2). Adaptation to conflict proceeds via sequential triggering of negative and positive affect (EF3). Moreover, it was demonstrated that the focus on action or reflection changes the scope of contents subjected to implicit (affective) control. Therefore, I suggest that the motivational system, to a large extent, plays the role of the Central Executive. The paper opens a discussion and proposes studies on affective mechanisms of cognitive control.
Źródło:
Polish Psychological Bulletin; 2016, 47, 1; 29-42
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Linear q-Difference Fractional-Order Control Systems with Finite Memory
Autorzy:
Mozyrska, D.
Pawłuszewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/387319.pdf
Data publikacji:
2011
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
obserwowalność
możliwość kontroli
pamięć
układ sterowania
memory
control system
observability
controllability
Opis:
The formula for the solution to linear q-difference fractional-order control systems with finite memory is derived. New definitions of observability and controllability are proposed by using the concept of extended initial conditions. The rank condition for observability is established and the control law is stated.
Źródło:
Acta Mechanica et Automatica; 2011, 5, 2; 69-73
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Control system design for multi-rotor MAV
Autorzy:
Wang, W.
Ma, H.
Sun, C.-Y.
Powiązania:
https://bibliotekanauki.pl/articles/280407.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
MAV
attitude control
altitude control
LQG
memory based control
Opis:
Abstract MAVs (Micro Air Vehicles) have attracted more and more attention in recent years because of their wide applications, such as investigations of inhospitable environment, nuclear or hazardous material polluted regions and other inaccessible areas. In this paper, both attitude and altitude controls of a Quad-Rotor type MAV are discussed and analyzed. To stabilize the attitude, one order memory based controller is selected, the performance of which is independent of the detail model information, leading to enhanced robustness. While for the altitude, a Linear Quadratic Gaussian (LQG) controller is proposed. The experimental results of the real flight demonstrate the stability and robustness of the controllers.
Źródło:
Journal of Theoretical and Applied Mechanics; 2013, 51, 4; 1027-1038
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods of designing of compositional microprogram control units with mutual memory
Metody projektowania mikroprogramowanych jednostek sterujących o adresowaniu wspólnym
Autorzy:
Wiśniewski, R.
Barkalov, A. A.
Janik, A.
Powiązania:
https://bibliotekanauki.pl/articles/156222.pdf
Data publikacji:
2008
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
mikroprogramowany układ sterujący
programowalny układ FPGA
compositional microprogram control unit (CMCU)
field programmable gate array (FPGA)
Opis:
In the article four designing methods of Compositional Microprogram Control Unit (CMCU) will be described and compared. The first one - with mutual memory - is traditional way of synthesis of CMCU. Here operational vertices of the initial flow chart that describes the functionality of control units are replaced with operational linear chains that permit to minimize the number of internal states of the controller. Three remaining methods are based on the CMCU with mutual memory; however there are additional improvements that allow reducing the number of logic elements that are required for implementation of CMCU on programmable device. Detailed results of investigations will be shown in the paper. Authors have performed researches where over 100 benchmarks (descriptions of CMCU) were designed with all four methods and implemented on an FPGA. Results of implementation will be studied and analyzed in detail and described in the paper.
W referacie zaprezentowane zostaną cztery metody projektowania mikroprogramowanych jednostek sterujących. Pierwsza metoda to tradycyjny sposób syntezy sterownika o adresowaniu wspólnym. Na jej podstawie opracowane zostały trzy inne metody projektowania mikroprogramowanych układów sterujących. Wprowadzono modyfikacje w strukturze sterownika, których głównym celem była redukcja liczby wykorzystanych elementów logicznych podczas implementacji systemu w matrycach FPGA. W artykule przedstawione zostaną szczegółowe wyniki badań przeprowadzonych przez autorów. Każdy sterownik zaprojektowano wszystkimi czterema metodami, a następnie przeprowadzono operacje syntezy oraz implementacji. Końcowe wyniki zajętości poszczególnych wersji w programowalnych matrycach FPGA zostaną szczegółowo przeanalizowane.
Źródło:
Pomiary Automatyka Kontrola; 2008, R. 54, nr 8, 8; 493-495
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shape-memory materials as control elements used in dot Braille actuator
Materiały z pamięcią kształtu jako człony wykonawcze w siłowniku Braillea
Autorzy:
Bryła, J.
Martowicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/368932.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
shape-memory materials
smart materials
actuator
Braille display
design configurations
analytical methods
materiały z pamięcią kształtu materiały inteligentne
człon napędowy
wyświetlacz alfabetu Braille'a konfiguracje projektowe
metody analityczne
Opis:
The objective of this paper is to show a designing process for actuators that utilizes shape-memory materials. Analytical studies are carried out to design a dot actuator to be used in an electronic Braille display. Shape-memory materials are a relatively new group of smart materials that exhibit the transformation of their internal structures in solid state phases resulting from external mechanical or thermal excitation. This unique property shows up as three phenomena: one- and two-way memory effects as well as superelasticity, which all significantly influence the change of both the mateńal properties and geometry. Hence, shape-memory mateńals are used as actuators effectively controlled by the above-mentioned types of excitation. The work presents the design guidelines for a proposed technical solution as well as the phenomenon utilized in the elaborated model of the actuator. The authors derived the mathematical descriptions for the proposed design configuration and an example of the calculations is shown. Moreover, the characteristics of the elaborated configuration are also discussed, taking into account the range of application areas.
W artykule przedstawiono proces projektowania siłowników zbudowanych z materiałów z pamięcią kształtu z zastosowaniem metod analitycznych na przykładzie członu wykonawczego punktu Braille'a stosowanego w elektronicznych wyświetlaczach alfabetu Braille'a. Materiały z pamięcią kształtu są stosunkowo nową grupą materiałów inteligentnych, które charakteryzują się przebudową struktury wewnętrznej w fazach stałych na skutek zewnętrznego wymuszenia mechanicznego lub termicznego. Ta szczególna własność widoczna jest w trzech zjawiskach: jednokierunkowego oraz dwukierunkowego efektu pamięci kształtu oraz supersprężystości, które istotnie wpływają na zmianę wartości parametrów materiałowych oraz geometrię. W efekcie materiały z pamięcią kształtu znajdują zastosowanie jako napędy w członach wykonawczych, w których skok siłownika jest funkcją jednego z wyżej wymienionych wymuszeń. W artykule przedstawiono założenia projektowe zaproponowanego rozwiązania technicznego oraz omówiono zjawisko wykorzystywane w opracowanym modelu. Autorzy wyprowadzili odpowiednie zależności ilościowe dla przyjętej konfiguracji siłownika, których użycie zaprezentowano na przykładzie obliczeniowym. Poddano dyskusji charakterystyki zaproponowanej konfiguracji projektowej, z uwzględnieniem obszaru jej zastosowania.
Źródło:
Mechanics and Control; 2014, 33, 4; 83-89,
2083-6759
2300-7079
Pojawia się w:
Mechanics and Control
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reduction in the number of LUT elements for control units with code sharing
Autorzy:
Barkalov, A.
Titarenko, L.
Bieganowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/908135.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
mikroprogramowany układ sterujący
współdzielenie kodów
układ programowalny
tablica przeglądowa
field programmable gate array (FPGA)
lookup table
design
Embedded Memory Block
compositional microprogram control unit (CMCU)
code sharing
operational linear chain
Opis:
Two methods are proposed targeted at reduction in the number of look-up table elements in logic circuits of compositional microprogram control units (CMCUs) with code sharing. The methods assume the application of field-programmable gate arrays for the implementation of the combinational part of the CMCU, whereas embedded-memory blocks are used for implementation of its control memory. Both methods are based on the existence of classes of pseudoequivalent operational linear chains in a microprogram to be implemented. Conditions for the application of the proposed methods and examples of design are shown. Results of conducted experiments are given.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2010, 20, 4; 751-761
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Capacity, Control, or Both – Which Aspects of Working Memory Contribute to Children’s General Fluid Intelligence?
Autorzy:
Nęcka, Edward
Lulewicz, Agata
Powiązania:
https://bibliotekanauki.pl/articles/430619.pdf
Data publikacji:
2016-04-01
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
working memory
intelligence
n-back
schoolchildren
Opis:
Starting from the assumption that working memory capacity is an important predictor of general fluid intelligence, we asked which aspects of working memory account for this relationship. Two theoretical stances are discussed. The first one posits that the important explanatory factor is storage capacity, roughly defined as the number of chunks possible to hold in the focus of attention. The second one claims that intelligence is explained by the efficiency of executive control, for instance, by prepotent response inhibition. We investigated 96 children at the age between 10 and 13. They completed a version of the n-back task that allows assessment of both storage capacity and inhibitory control. They also completed Raven’s Progressive Matrices as the fluid intelligence test and the Test for Creative Thinking - Drawing Production, for control purposes. We found that Raven’s scores correlated negatively with the number of unnecessary responses to irrelevant stimuli but they did not correlate with the number of signal detections. We conclude that children’s fluid intelligence depends on inhibitory control, with no relationship with storage capacity.
Źródło:
Polish Psychological Bulletin; 2016, 47, 1; 21-28
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ERPS AS AN INDEX OF IMPAIRED COGNITIVE CONTROL IN AN ISCHEMIC BRAIN STROKE APHASIC PATIENT
Autorzy:
Cielebąk, Ksenia
Grzywniak, Celestyna
Powiązania:
https://bibliotekanauki.pl/articles/2137979.pdf
Data publikacji:
2021-01-15
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
ERPs
attention
working memory
naming problem
cognitive control
Opis:
Stroke is a sudden-onset neurological deficit resulting from focal vascular lesions. This is either due to a clot-induced obstruction of a vessel (ischemic stroke) or a rupture of a vessel causing haemorrhage (hemorrhagic stroke). The appropriate diagnosis of brain stroke aphasic patients is a major public health problem one so important for effective rehabilitation. Here an important role is played by the diagnosis of impaired cognitive processes. The aim of the research was to find the index of impaired cognitive control with the use of ERPs in a patient following an ischemic stroke with aphasia. A male patient, aged 69, after an ischemic brain stroke experienced 4 months previously with resulting naming problem, was admitted to the Reintegrative and Teaching Center of the Polish Neuropsychological Society. In the neuropsychological evaluation three neuropsychological tests were employed: (a) the Boston Naming Test-Polish version, to evaluate the naming and word finding problem; (b) the nonverbal Bell test to ascertain a selective, visuospatial and strategic attentional evaluation; (c) the Digit Memory test to evaluate working memory capabilities; (d) ERPs as a neurophysiological index of impaired cognitive control. Significant changes were observed in testing. All cognitive functions including naming, nonverbal, visuospatial and strategic attention, along with the digit memory deviate substantially from the norm. The patient obtained a lo wer score, compared to the norm (p <0.05). Boston Naming Test (patient = 21< Mean-Norm = 57.29; SD= 0.52). Bell test (patient = 23 < Mean-Norm = 31.29; SD= 2.52). Digit Memory Test scores: Forward digit span (patient = 3 < Mean-Norm = 7.65, SD = 0.49). Backward digit span (patient = 2
Źródło:
Acta Neuropsychologica; 2021, 19(1); 11-22
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected measurement and control techniques : experimental verification on a lab-scaled overhead crane
Autorzy:
Szpytko, J.
Hyla, P.
Kosoń-Schab, A.
Smoczek, J.
Powiązania:
https://bibliotekanauki.pl/articles/950147.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
overhead crane
modelling
vision systems
anti-sway control
Metal Magnetic Memory
Opis:
This article presents three independent concepts of use high-level technique with it adaptation and implementation concerning overhead travelling crane device type. The main objective of this statement applies a solution for device workspace mapping, payload anti-sway control techniques strategy use and possibility of reliable steel construction health monitoring. In the first chapter, the vision system technology for obstacle in workspace visualization was presented. The main idea depends on use stereovision system with sets of camera mounted under the crane’s trolley which movement with the crane shifts. The stereo pictures, after digital processing, were used for develop so-called dense disparity map. The described architecture allows achieving information about device surroundings and obstacle position in the workspace. As the final result was presented three-dimensional map of the device workspace with obtained result accuracy discussion. The second type of described problem developed in chapter two concern the crane control methodology of designing the anti-sway system for payload stabilizing during the crane movement. The oscillation of a payload adversely affects the accuracy of performed transportation tasks and may present a safety hazard to employees, transferred payload and surrounding objects. The invented and described method mainly base on so-called soft computing methods. The next part of the article-focused attention of problem concerning health monitoring cranes construction as other equipment’s as well. The problem concerns usually the large industrial cranes carry out transportation operations in the presence of a large impact load and mechanical stresses acting overall crane’s structure. The safety and efficiency of crane operations can be improved through providing the continuous structural health monitoring as well in on-line and off-line mode. The main idea allows using Metal Magnetic Memory technique for supervising and estimating steel construction actual condition. All tests and considerations were conducted on the scaled physical model of overhead travelling crane with hosting capability 150 kg
Źródło:
Journal of KONES; 2017, 24, 3; 299-308
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
EVENT-RELATED POTENTIALS STUDIES OF PTSD AFTER INFECTION OF SARS-COV-2 AND NEUROCOVID-19
Autorzy:
Pąchalska, Maria
Nowaczyk, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/2138057.pdf
Data publikacji:
2021-08-31
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
traumatic event
stress
anxiety
working memory
cognitive control
Opis:
Coronavirus disease 19 (COVID-19) hospitalisation is a potentially traumatic experience, especially in severe cases. Furthermore, the unprecedented context of the SARS-CoV-2 pandemic, with the daily media bombardment about COVID-19 mortality, may have amplified its life-threatening perception also in patients with moderate infection. The purpose of our study was twofold: 1) to evaluate QEEG/ERPs shows of PTSD associated with severe infection SARS-CoV-2, and neuroCOVID-19, 2) to construct a neurofeedback protocol based on these indices to support the psychotherapy of the case study described herein. Patient N.C. 49, a frontline healthcare worker in the emergency services (an ambulance driver), became ill with Covid-19 on November 14, 2020. Initially, he lost his sense of smell (anosmia), of taste (ageusia), and had latent blinks (heterophila), headaches, and dizziness. After 10 days of illness, the patient had additionally a dry cough and a shortness of breath and he was hospitalized, sedated and mechanically ventilated for 24 days. After a few months he was diagnosed with PTSD (according to the DSM- 5 criteria) and referred to the Reintegration and Training Center of the Polish Neuropsychological Society for further diagnosis and treatment. It was found that the P3 GO and P3 NOGO waves were indeed less in his case (p < 0.01) when compared to the ERPs results of a health group of individuals of a similar age (n = 100), derived from the normative data bases of the Human Brain Index (HBI) in Switzerland. The ERPs wave pattern in our patient reflects the pattern appearing in patients with PTSD. The patient took part in 20 sessions of individually tailored anodal transcranial direct current stimulation (tDCS), with the excitatory stimulation of the left prefrontal cortex and inhibitory stimulation of the right prefrontal cortex which can reduce anxiety, as was proposed in the subject literature. Also, the neuromarker of PTSD obtained with the use of QEEG/ERPs was helpful in choosing the appropriate tDCS protocol. Neurostimulation with the use of tDCS was administered systematically, every day, 15-20 and 30-40 minutes for each session, for 20 days. He also received individual sessions of psychotherapy every day, 30-40 minutes for each session, for 20 day. After the treatment the patient improved and returned to his previous job as a frontline healthcare worker in the emergency services (an ambulance driver) in the fight against COVID-19. Detection of the PTSD neuromarker enabled the development of a proper tDCS protocol and the conduct of effective brain neurostimulation of a patient with PTSD. The proposed protocol of treatment, in combination with goal-oriented individual psychotherapy, offered to the patient, was effective in the reduction of PTSD. ERPs can be useful in the diagnosis of PTSD as well as in selecting an appropriate therapy protocol for these patients.
Źródło:
Acta Neuropsychologica; 2021, 19(3); 347-360
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of shape memory alloy in harvesto-absorber system
Autorzy:
Kęcik, K.
Powiązania:
https://bibliotekanauki.pl/articles/386907.pdf
Data publikacji:
2015
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
pendulum
sma spring
energy harvester
vibration absorber
control
continuation method
stopy z pamięcią kształtu
teoria Ginzburga-Landaua
tłumik drgań
Opis:
This paper presents a conception of the harvester-absorber system consisting of two parts. The first is the pendulum attached to the main system (oscillator), which is suspended on the linear damper and the nonlinear spring made of shape memory alloy. The spring is modelled as a polynomial function based on Landau–Ginzburg theory of phase transitions (similar as ferroelectric and ferromagnets). The obtained results show, that SMA element can increase harvesting energy level, while the absorber effect can be impaired (but not loss). Additionally, introducing SMA element causes changes in dynamics, introduces a new unstable solutions and bifurcations. The analysis was done by classical integration and continuation solution methods.
Źródło:
Acta Mechanica et Automatica; 2015, 9, 3; 155-160
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The structure and regulative function of the cognitive styles: a new theory
Autorzy:
Nosal, Czeslaw S.
Powiązania:
https://bibliotekanauki.pl/articles/430568.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cognitive styles
cognitive styles theory
perceptual styles
memory styles
conceptual styles
control styles
cognitive holon
Opis:
The organization of human cognitive styles can be described as a kind of functional system or as an holon. In this framework it is possible to propose a new theoretical base for classifying the primary cognitive styles. The fundamental theoretical thesis is that for all styles there is one common mechanism of forming and scanning the perceptual and memory field induced by the situation, and by the differences in the manner of carrying out the processes of field scanning /codes interfering depend on the range of conceptual equivalency and cognitive control of behavior. In the functional describing of the basic set of cognitive styles we must take into account three elements of the chain: neurobiological modules -> organization of cognitive holon -> behavioral manifestation of styles.
Źródło:
Polish Psychological Bulletin; 2010, 41, 3
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
EEG NEUROFEEDBACK IN THE TREATMENT OF COGNITIVE DYSFUNCTIONS AFTER THE INFECTION OF SARS-COV-2 AND LONG COVID-19
Autorzy:
Łuckoś, Maria
Cielebąk, Ksenia
Kamiński, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/2138045.pdf
Data publikacji:
2021-08-31
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
cognitive control
stress
anxiety
working memory
Opis:
Coronavirus disease 2019 (COVID-19) is likely to have long-term mental health effects on individuals who have recovered from COVID-19. According to Centers for Disease Control and Prevention (CDC), individuals diagnosed with COVID-19 can see a range of long-term side effects. The aim of the study was to evaluate the effectiveness of neurotherapy (EEG neurofeedback and goal-oriented cognitive training) in the treatment of neurocognitive dysfunctions in a patient after the infection of SARS-CoV-2 and the long long-term side effects after the contraction of COVID-19. The 48-year-old woman ZR, an accountant by profession, an employee of the administration of the Municipal Board of Municipal Resources, fell ill on October 13, 2020. The disease began with very severe burning headache, eyeballs pain, muscle aches. Ten days later more symptoms joined: loss of smell (anosmia) and loss of taste (ageusia), hearing disorders, shortness of breath and chest pains. The symptoms were associated with SARS-CoV-2 coron- avirus infection confirmed by an rt-PCR genetic test. Brain MRI with intravenous paramagnetic contrast medium injection did not show either lesions of acute microischemic significance or areas of pathological enhancement after paramagnetic contrast medium ad- ministration. The patient was treated at home. In mid-November 2020, about a month after the infection of SARS-CoV-2 and con- tracting NeuroCOVID-19, neurocognitive impairment developed and after half a year she was deteriorating and not able to live in- dependently in society because of her condition. She called her problem "brain fog", and was referred for further diagnosis and therapy to the Reintegration and Training Center of the Polish Neuropsychological Society. We diagnosed a range of long-term side effects and introduced neurotherapy (EEG neurofeedback and goal-oriented cognitive training) in the treatment of neurocognitive dysfunctions. It was found that almost all the long-term side effects were reduced in magnitude. The patient improved and she was able to return to work. EEG neurofeedback and goal-oriented cognitive training might be helpful in the reduction of neurocognitive dysfunctions in patients following the infection of SARS-CoV-2 and long-term side effects after the contraction of COVID-19.
Źródło:
Acta Neuropsychologica; 2021, 19(3); 361-372
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Event-related potentials as an index of lost cognitive control and lost self in a TBI patient with duration increasing post-traumatic Delusional Misidentification Syndrome concluded with Cotard Syndrome
Autorzy:
Pąchalska, Maria
Powiązania:
https://bibliotekanauki.pl/articles/2106070.pdf
Data publikacji:
2019
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
memory
working autobiographic memory
executive dysfunction
delusional misidentification syndromes
Cotard syndrome
Capgras syndrome
Fregoli syndrome
P300
N170
Opis:
The goal of the study was twofold: 1) to evaluate the QEEG/ ERPs indexes of functional brain impairment in a TBI patient diagnosed with chronic lost cognitive control and lost self caused by post traumatic, and here increasing over time, delusional misidentification syndrome concluded with Cotard syndrome in the blooming stage, with nihilistic delusions concerning the body and existence, and the delusion of being dead, and 2) to explore the mind of a patient whose identity has been disengaged, and who experiences the loss of his self and relations with his immediate surroundings with all the tragic consequences that entails. I herein present a 52-year-old patient, who – after a serious head injury due to a car accident 20 years ago, which re- sulted in focal injuries in the frontal and temporal areas of the right hemisphere – developed Cotard syndrome. After arousal from a 63-day coma and 98 days of post-traumatic amnesia, he manifested: (1) the loss of autobiographical memory, (2) a lost self, (3) forgotten family ties (including his lover). The study revealed that the patient’s cognitive control system is completely destroyed: no cognitive components have been found. Recall from memory has been completely disturbed (a low amplitude of N170). The two hemispheres work inco- herently with the right hemisphere revealing a serious delay in memory recall.
Źródło:
Acta Neuropsychologica; 2019, 17(4); 487-508
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
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