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Clinical Neurophysiology Laboratory

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Clinical Neurophysiology Laboratory

Imre Szirmai, MD, PhD, DSc

Professor

Our Clinical Neurophysiology Laboratory carries out both diagnostic and research activity. During the last 15 years methods were elaborated for the investigation of movement disorders. The complex pathomechanism of Parkinsons disease was approached by the analysis of event related EEG activity especially post movement beta synchronization. The results served the understanding of the asymmetry of clinical signs and the cortical involvement of Parkinson's disease. With the help of sophisticated mathematical analysis we were able to differentiate the basic types of tremors; furthermore evidences were gathered that the generators of Parkinsonian- and essential-type tremors are different.
During cognitive effort EEG, blood flow velocity in the middle cerebral artery and autonom parameters were analyzed by polygraphic method. Close correlation was found between laterality of blood flow and EEG power. Mental stress elicits significant change of blood pressure, heart rate and respiration. Decrease of end tidal pCO2 exerts strong influence on the intracerebral vascular resistance, which modifies the regional blood flow within the activated regions of the hemispheres. Results suggested that the increase of localized theta activity may not be a unique indicator of working memory, but the physiological consequence of hyperventilation caused by cognitive stress.
The cortical mechanisms of gaze and nystagmus are intensively investigated fields of neuroscience. We constructed a complex system for the parallel investigation of optokinetic nystagmus and EEG in healthy volunteers and patients. Characteristic and reproducible change of EEG power was found during optokinetic saccads. We clarified the role of attentive components with the help of time locked EEG synchronization. The clinical usefulness of nystagmography in localization of structural damage has increased in the last years since minimal dysfunction of the neuronal system of gaze can be identified using this method.

KEYWORD(S): motor and cognitive event related EEG, electronystagmography, tremor, Parkinson's disease,

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KEYWORD UNIVERSE: CO2-sensitivity, GTPase activating proteins - GAPs, NADPH oxidase - NOX2, NADPH oxidase, Neutrophilic granulocytes, TASK, TRESK, aging, apoptosis, asthma, autonomic neuropathy, autoregulation, avian, bioinformatics, blood-brain barrier, c, calcineurin, calcium, cancer, cell biology, cell fusion, cerebral blood flow, cerebral blood volume, complement, dendritic cells, diabetes, dopamine, duplikation, early restenosis, embryo, embryomanipulation, endoplasmic reticulum, endothelium, enviroment, epidemiology, exercise, gene expression, gene, genetics, hydrogen peroxide, hypothalamus, immunology, in vitro fertilization, inflammation, ischemia-reperfusion, liver, lupus nephritis, lymphoid tissue, medicinal chemistry, metabolic bone disease, mitochondria, molecular biology, neuronal plasticity, neuroprotection, oral biology, oxidative stress, pathology, pathophysiology, peroxidase, phagocytes, pharmacokinetics, physiology, potassium channel, reactive oxygen species, receptors redox homeostasis, regulation, signal transduction, small GTPases, stem cell, stress, stroke, superoxide, tetrasomi, tissue engineering, transplantation,

Clinical Neurophysiology Laboratory Neuroendocrine Research Laboratory Salivary Research Laboratory Neurobiochemical Research Group Neurochemical Research Unit Pharmaceutical sciences, pharmacology Biochemical Research Group Immunohistological Laboratory Experimental and clinical oncology Internal medicine and pediatrics Molecular biology, microbiology Sleep Medicine Unit Medicine of sensory organs Physiology, pathophysiology Heart Center www Behavioural sciences

Research Areas

Behavioural sciences

	Clinical Psychiatry Research Group
	Mental Health Research Group
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Biochemistry, cell biology, biophysics

	Chaperone and Network Group
	Drug Target Interactions Unit
	Endoplasmic Reticulum Research Group
	Functional Protein Dynamics Laboratory
	Hemostasis Group
	Laboratory of Cell Biology, Section of Vascular Neurology
	Laboratory of Ion Channel Research
	Laboratory of Molecular Endocrinology
	Pathobiochemistry Research Group
	Signal Transduction Laboratory

Dental sciences

	Molecular Oral Biology Research Group
	Salivary Research Laboratory

Experimental and clinical immunology and genetics

	Acute Phase Reaction Research Group
	Clinical Genomics Unit
	Experimental Renal Research Group
	Immunogenomics and Immunomics
	Immunology Laboratory of Pulmonary Diseases
	Inflammation Immunology Group
	Laboratory of IF and Genetics
	National Angioedema Center
	Research Group of Immunogenetic and Complement Investigations
	Research Group of Inflammation Biology and Immunogenomics

Experimental and clinical oncology

	Laboratory of Tumor Biology
	Molecular Therapy Laboratory
	Proteoglycan Research Group

Internal medicine and pediatrics

	Clinical Nephrology Research Group
	Clinical Research Laboratory
	Diabetes and Metabolism Study Group
	Division of of Haematology
	Endocrinological Research Group
	Hepatology Unit
	Lipid and Atherosclerosis Research Group
	Molecular Genetic Unit
	Neuropathy Research Group
	Pediatric Nephrology Research Group
	Pediatric Research Group
	Research Group of Metabolism and Clinical Genetics
	Unit of Molecular Mechanisms of Gastroenterological Disorders

Medicine of sensory organs

	Corneal and Refractive Surgical Unit
	Glaucoma Clinical and Research Group
	Laboratory of Corneal Wound Healing
	Ocular Surface and Cornea Laboratory

Miscellaneous

	Biochemical Research Group
	Heart Center
	Photocarcinogenesis, Photodermatology Unit
	Sleep Medicine Unit

Molecular biology, microbiology

	Antibiotic Resistance Research Unit
	Genetics Unit
	Laboratory of Molecular Genetics

Morphological sciences (anatomy, pathology, forensic medicine)

	Developmental Biology Laboratory
	Laboratory of Experimental Liver Pathology
	Liver Pathology Research Unit
	Oncohaematology Laboratory

Neurosciences

	Clinical Neurophysiology Laboratory
	Immunohistological Laboratory
	Laboratory of Cell and Molecular Biology
	Laboratory of Comparative Neurocytology and Neuroethology
	Molecular and Cellular Neuroendocrine Research Laboratory
	Neurobiochemical Research Group
	Neurochemical Research Unit
	Neuroendocrine Research Laboratory
	Neuromorphological and Neuroendocrine Research Laboratory
	Reproductive Neuroendocrinology Laboratory
	Research Group for Stroke and Dementia
	Sleep Research and Psychophysiology Group

Pharmaceutical sciences, pharmacology

	Application of Bioanalytical Methods in Pharmaceutical Research
	Biochemical Pharmacology Unit
	Gastroenterological Research Laboratory
	Medicinal Chemistry Research Group, Rational Drug Design Laboratory
	Opioid Research Group
	Research Group for Drug Profiling and Analysis
	Research Group of Phytochemistry and Pharmaceutical Biotechnology
	Research Laboratory for Organic and Medicinal Chemistry
	Stability Research Group

Physiology, pathophysiology

	Cardiovascular and Volume Homeostasis Research Group
	Cerebrovascular Signaling Research Group
	Clinical Cardiovascular Laboratory
	Immunology of Renal and Vascular Diseases Group
	Inflammation Research Unit
	Laboratory of Cerebrovascular Research
	Laboratory of Molecular Endocrinology
	Laboratory of Reactive Oxygen Species Research
	Laboratory of Tissue Engineering
	Laboratory of Vascular Physiology
	Molecular Biology Laboratory
	Nephrology Research and Training Center
	Phagocyte Research Group

Reproductive sciences

	Division of Assisted Reproduction
	Gene and Enviroment

Sport sciences

	Research Institute of Sport Science
	Research Laboratory of Biomechanics

Surgery (operative sciences)

Unit of Pelvic Floor Dysfunction