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Wyszukujesz frazę "Kropotov, Juri D." wg kryterium: Autor


Wyświetlanie 1-8 z 8
Tytuł:
Functional neuromarkers for neuropsychology
Autorzy:
Kropotov, Juri D
Powiązania:
https://bibliotekanauki.pl/articles/2137701.pdf
Data publikacji:
2018-03-19
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
neuroimaging
quantitative EEG
event related de/synchronization
event-related potentials
Opis:
This article is written to commemorate the 40th year of the scientific career of Professor Maria Pąchalska, Head of the Department of Neuropsychology and Neurorehabilitation at Krakow University, President of the Polish Neuropsychological Society, and the Editor-in-chief of Acta Neuropsychologica, with whom I have been collaborating for over ten years. The subject matter of our work includes the introduction of HBI methodology to clinics and the search for neuromarkers in particular disease entities. What is the new methodology we are talking about? In general, we think of a biomarker (or biological marker) as a characteristic that can be objectively measured and evaluated as an index of normal or pathological biological processes. For disorders of the central nervous system, biomarkers can be classified as clinical, neuroimaging, biochemical or genetic, according to the type of information they provide. Expectations for the development of biomarkers are high, since they could lead to a significant improvement in diagnosing and possibly preventing neurological and psychiatric diseases. Neuroimaging is an array of neuroscience methods that include the techniques of magnetic resonance imaging (MRI), functional MRI (fMRI), and PET (positron emission tomography), as well as Electroencephalogram (EEG) and Magnetoencephalogram (MEG) techniques, such as quantitative EEG (QEEG), event related de/synchronization (ERD/ERS) and event-related potentials (ERPs).
Źródło:
Acta Neuropsychologica; 2018, 16(1); 1-7
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
NEUROPSYCHOLOGY AND THE NEUROPHYSIOLOGY OF PERCEPTUAL MICROGENESIS
Autorzy:
Pąchalska, Maria
Góral-Pólrola, Jolanta
Mueller, Andreas
Kropotov, Juri D
Powiązania:
https://bibliotekanauki.pl/articles/2137785.pdf
Data publikacji:
2017-12-18
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
microgenetic theory
event related potentials
stages of information flow
ventral visual stream
independent component analysis
Opis:
Perception is one of the psychological operations that can be analyzed from the point of view of microgenetic theory. Our study tests the basic premise of microgenesis theory – the existence of recurrent stages of visual information processing. The event related potentials in two variants of a cued GO/NOGO task (contrasting images of Animals and Plants in the first variant, and contrasting images of Angry and Happy faces in the second variant) were studied during the first 300 ms following stimulus presentation. The independent component analysis was applied to a large collection of ERPs. The functional independent components associated with visual category discrimination, comparison to working memory, action initiation and conflict detection were separated. Information processing in the ventral visual stream (the temporal independent components) occurs at two sequential stages with positive/negative fluctuations of the cortical potential as indexes of the stages. The first stage represents the comparison of the pure physical features of the visual input with the memory trace. The second stage represents the comparison of more sophisticated semantic/emotional features with the working memory. The two stages are the results of interplay between bottom-up and top-down projections in the visual ventral stream.
Źródło:
Acta Neuropsychologica; 2017, 15(4); 365-389
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
FUNCTIONAL NEUROMARKERS OF POST-TRAUMATIC STRESS DISORDER (PTSD) IN A MAJOR ISCHEMIC STROKE SURVIVOR AFTER CAROTID ENDARTERECTOMY (CEA) REVASCULARIZATION
Autorzy:
Trystuła, Mariusz
Góral-Półrola, Jolanta
Kropotov, Juri D
Pąchalska, Maria
Powiązania:
https://bibliotekanauki.pl/articles/2137757.pdf
Data publikacji:
2018-12-20
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
Event-Related Potentials (ERPs)
cued GO/NOGO task
information processing
functional neuromarkers
Opis:
The aim of this study was to test the hypothesis of developing Post-Traumatic Stress Disorder (PTSD) in a major right-hemisphere ischemic brain stroke survivor half a year after CEA revascularization, with the use of Event Related Potentials (ERPs). He was in a serious condition and had limited consciousness. Therefore, the doctor informed the patient's wife about the possibility of sudden death. The patient heard this information and remembered it, which was one of the main causes of the development of PTSD. On the basis of previous research amplitudes of P3 ERP, components elicited in the cued GO/NOGO tasks have been chosen as the candidate for PTSD neuromarkers . A 44-year-old patient had a major ischemic brain stroke while sizeable atherosclerotic plaque causing critical stenosis of the internal carotid artery in Angio-CT was dioscovered. The patient was urgently operated on using CEA. After the operation he had the opportunity to see the removed plaque which had been the cause of his stroke. Despite the positive postoperative recovery, half a year later, the patient began to complain of flashbacks, anxiety, trouble in falling and staying asleep, difficulty in concentration, a loss of interest. For the diagnosis of PTSD we used Checklist Specific for a stressor (PCL-S). Additionally we used Checklist according to the Diagnostic Statistical Manual-5 (DSM-5) classification, and the patient met the PTSD criteria. The cognitive profile of the patient was measured with the use of the Wechsler Memory Test – III (WMS-III). Subsequently, the patient participated in the cued GO/NOGO task (Kropotov, 2009) with a recording 19-channel EEG. The P3 GO and NOGO waves in this task were found to be significantly smaller at p
Źródło:
Acta Neuropsychologica; 2018, 16(4); 417-429
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of ERPs neuromarkers for assessment and treatment of a patient with chronic crossed aphasia after severe TBI and long-term coma - case report
Autorzy:
Chantsoulis, Marzena
Półrola, Paweł
Góral-Półrola, Jolanta
Hajdukiewicz, Anna
Kropotov, Juri D.
Pachalska, Maria
Powiązania:
https://bibliotekanauki.pl/articles/989909.pdf
Data publikacji:
2017
Wydawca:
Instytut Medycyny Wsi
Tematy:
cognitive control
emotional control
relative beta training
rtms
microgenetic theory
Opis:
Objective. The study aimed to evaluate the application of ERPs neuromarkers for the assessment and treatment of a patient with chronic crossed aphasia after severe TBI and a long-term coma. Case report. An ambidextrous female patient, aged 29, suffered from posttraumatic chronic crossed aphasia, severe TBI and a prolonged coma after a car accident. The patient took part in two differentiated rehabilitation programmes of neurotherapy included 20 sessions of relative beta training and 20 sessions of rTMS; both programmes were combined with behavioural training. The patient was tested 3 times: before the experiment, after completion of programme A, and after completion of programme B. Results. In the 1st recording, the neuromarker of aphasia was found – an excess of the P2 wave over the left temporal area. There was a cognitive control deficit – an excess of omission errors and an increase of RT variability – all indexes of sporadic ADHD. In the 2nd recording, slight improvements in cognitive control, and language functions were found. In the 3rd recording, after the rTMS sessions most of her cognitive dysfunctions had been resolved, including language functions. It should be stressed that the activation (especially the increase in the ERP potential of the right side over the frontal lobe) was found. The neuromarker of aphasia did not change, only the location had slightly moved frontally. Conclusions. The application of ERP neuromarkers assists in the diagnosis, treatment, and academic success of an ambidextrous patient with chronic posttraumatic aphasia and sporadic ADHD. ERPs can be used to assess the functional brain changes induced by neurotherapeutical programmes.
Źródło:
Annals of Agricultural and Environmental Medicine; 2017, 24, 1
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
FUNCTIONAL NEUROMARKERS OF COGNITIVE IMPAIRMENT IN VASCULAR DEMENTIA: A CASE STUDY
Autorzy:
Supińska, Marzena
Górla-Półrola, Jolanta
Cielebąk, Ksenia
Herman-Sucharska, Izabela
Kropotov, Juri D
Pąchalska, Maria
Powiązania:
https://bibliotekanauki.pl/articles/2137937.pdf
Data publikacji:
2020-07-02
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
Cognitive impairment
Quantitative Electro- Encephalogram (QEEG)
Event-Related Potentials (ERPs)
cued GO/NOGO task
Opis:
Early diagnosis and monitoring of disease progression in patients with Vascular Dementia (VaD) have become vital in clinical practice, as disease modifying treatments for VaD become available. The goal of our research was to study cognitive impairment in a patient at an early stage of VaD. We evaluated latencies of the P3 GO and NOGO components of event-related potentials (ERPs), elicited in cued GO/NOGO tasks, as potential neuromarkers of cognitive im- pairment, as suggested by previous research. The patient, a right-handed, 53-year-old male with a college edu- cation, suffered a transient ischemic attack (TIA) in 2011. During this attack, which lasted for a few minutes, he was confused and had trouble speaking, trouble seeing in both eyes, difficulty walking, problems with balance and coordination, and strange behavior. Se - ven years later, in 2018, he was assessed using the HBI methodol- ogy, which consisted of recording (1) a 19-channel EEG in resting state (with eyes open and eyes closed), and (2) a cued GO/NOGO task, and then comparing the results with EEG spectra and Event- Related Potentials (ERPs) data from normative and patient data - bases. The patient died in 2019. Post-mortem studies confirmed cortical microhaemorrhages neuropathological criteria for VaD. We did not found deposits of hyperphosphorylated tau (HPτ) and Aβ, which fulfil the neuropathological criteria for AD. The parietal-temporal-occipital EEG power was significantly higher in all conditions in this subject in comparison to healthy controls, indicating idling of the corresponding areas. The amplitude and la- tency of the P3 GO wave were found to be intact in the subject, in- dicating normal posterior cortical functioning in the cognitive task. The latency of the P3 GO wave was found to be significantly higher in the subject, indicating impairment of engagement operations. In a GO/NOGO task, ERPs provide a useful tool for assessment of brain functioning in clinical settings.
Źródło:
Acta Neuropsychologica; 2020, 18(3); 313-325
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cognitive dysfunctions in a Minimally Verbal (MV) patient with Autism Spectrum Disorder (ASD)
Autorzy:
Markiewicz, Katarzyna
Kaczmarek, Bożydar L.J
Kropotov, Juri D
MacQueen, Weronika D
MacQueen, Bruce D
Pachalska, Maria
Powiązania:
https://bibliotekanauki.pl/articles/2106145.pdf
Data publikacji:
2019-11-22
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
intellectual disability
epilepsy
event related potentials
EEG
QEEG
Opis:
The aim of this study was to examine the neurophysiological correlates of cognitive dysfunctions in a patient with the minimally verbal variant of Autism Spectrum Disorder (ASD + MV), who after reaching adulthood showed progressive deterioration of his cognitive skills. The patient was a 25-year-old male, diagnosed with ASD. He never developed spoken language, and communicated only by gesturing or writing on a computer. Our findings confirmed comorbidity of ASD and epilepsy, accompanied by dysfunction of cognitive control. We also found that spontaneous EEG and event-related potentials (ERPs) in a cued GO/NOGO task can be used to assess functional brain changes concomitant with ASD.
Źródło:
Acta Neuropsychologica; 2019, 17(3); 301-310
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrophysiological evaluation of the effectiveness of neurofeedback in ameliorating chronic Post-Traumatic Stress Disorder
Autorzy:
Morga, Rafał
Adamek, Dariusz
MacQueen, Weronika
MacQueen, Bruce Duncan
Góral-Półrola, Jolanta
Bitner-Szulc, Joanna
Kropotov, Juri D
Pąchalska, Maria
Powiązania:
https://bibliotekanauki.pl/articles/2106173.pdf
Data publikacji:
2019-06-19
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
Post-traumatic stress disorder (PTSD)
cued GO/NOGO task
P3 NOGO
neurofeedback
Opis:
The aim of our research was to evaluate the effectiveness of neurofeedback in reducing the symptoms of chronic Post Traumatic Stress Disorder (PTSD) in a patient who had developed the syndrome following a recurrence of sphenoid wing meningioma (SOM). EEG spectra and event-related potentials (ERPs) were used to construct an individual neurofeedback protocol and to provide objective monitoring of treatment efficacy. The patient, a 34-year-old female, was diagnosed with a sphenoid wing meningioma (SOM), which had been successfully operated. Three years later, however, the SOM had overgrown at the optic foramen and extended into the optic canal, and the patient had developed blurred vision. She was repeatedly operated, and recovered well. However, due to the recurrence she developed flashbacks, anxiety and sleep difficulties, such that she was unable to continue working in her profession. The symptoms had been occurring for 4 months. ERPs in a cued NOGO task, along with EEG spectra in the resting state and during task performance were used to assess brain functioning, providing the basis for a neurofeedback protocol. Twenty sessions of individually tailored neurofeedback were performed. The patient experienced a reduction of symptoms, accompanied by normalization of ERPs parameters. The results obtained in this case point to the possible benefits of individually tailored neurofeedback protocols in the treatment of PTSD.
Źródło:
Acta Neuropsychologica; 2019, 17(2); 179-188
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Neuromarkers of Post-Traumatic Stress Disorder (PTSD) in a patient after bilateral hand amputation - ERP case study
Autorzy:
Chrapusta, Anna
D. Kropotov, Juri
Pąchalska, Maria
Powiązania:
https://bibliotekanauki.pl/articles/986653.pdf
Data publikacji:
2017
Wydawca:
Instytut Medycyny Wsi
Tematy:
replantation
anxiety
flashback
Opis:
Introduction. There is a lack in the worldwide literature of reports on the Neuromarkers of Post-Traumatic Stress Disorder (PTSD) in patients after bilateral hand amputation The aim of this study was to test a hypothesis regarding developing Post-Traumatic Stress Disorder (PTSD) in a patient after bilateral hand amputation with the use of Event Related Potentials (ERPs). On the basis of previous research, the amplitudes of P3 ERP components elicited in the cued GO/NOGO tasks have been chosen as candidates for neuromarkers of PTSD. Case study. A 24-year-old patient had undergone bilateral hand amputation 12 months previously. The patient was repeatedly operated on (he had undergone successful bilateral hand replantation) and despite the severity of the injuries, he recovered. However, the patient complained of flashbacks, anxiety and sleep difficulties. Specialist tests showed the presence of PTSD. The patient participated in the cued GO/NOGO task (Kropotov, 2009) with recording 19-channel EEG. P3 GO and NOGO waves in this task were found to be significantly smaller, in comparison to a group of healthy control subjects of the same age (N=23) taken from the HBI normative database (https://www.hbimed.com/). This observed pattern of ERP waves in the patient corresponds to the pattern found in PTSD patients. Conclusions. ERPs in a GO/NOGO task can be used in the assessment of the functional brain changes induced by chronic PTSD.
Źródło:
Annals of Agricultural and Environmental Medicine; 2017, 24, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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