نتایج جستجو برای: eeg نوزاد

تعداد نتایج: 36962  

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده برق 1391

صرع، علامت کلینیکی فعالیت بیش از حد و بسیار همزمان نورون ها در قشر مغزی است که با تخلیه الکتریکی غیر طبیعی در بخشی از مغز همراه است. این بیماری به عنوان دومین اختلال مهم مغزی پس از سکته شناخته شده است. 1 تا 3 درصد مردم دنیا دچار این ضایعه مغزی هستند که بیماری 25% این افراد از طریق روش های موجود قابل درمان نیست. سیگنال eeg در اثر تخلیه همزمان نورون های مغز ایجاد شده و به هنگام حمله صرع دچار تغیی...

Guy A Dumont, Shahbaz Askari, Zoya Bastany,

Long term video electro-encephalographic (EEG) monitoring (LTM) is defined as the continuous and synchronized recording of EEG and multimedia to analyze brain abnormalities. A conventional LTM system continuously records EEG in the frequency range of 0.5-70Hz. The data synchronization, the high-volume data management, the system reliability as well as noise reduction remain significant challeng...

بهداد, شکوفه, فردوسیان, فرزاد, فلاح, راضیه, یادگاری, یاسر,

Introduction: Electroencephalography (EEG) is useful in seizure diagnosis. It needs cooperation and immobility of the person and if a child does not naturally sleep, pharmacological agents will be used to induce sleeping. The purpose of this study was to investigate efficacy and side effects of oral melatonin in sedation induction for EEG of children. Methods: In a quasi- experimental stud...

Journal: :basic and clinical neuroscience 0
amjad hashemi institute for advanced medical technologies (iamt), tehran university of medical sciences, tehran, iran. valiallah saba aja university of medical sciences, tehran, iran seyed navid resalat control and intelligent processing center of excellence, school of electrical and computer engineering, college of engineering, university of tehran, tehran, iran.

the objective of this study is development of driver’s sleepiness using visually evoked potentials (vep). vep computed from eeg signals from the visual cortex. we use the steady state veps (ssveps) that are one of the most important eeg signals used in human computer interface systems. ssvep is a response to visual stimuli presented. we present a classification method to discriminate between cl...

Journal: :iranian biomedical journal 0
rakesh kumar sinha amit kumar ray

the recent literatures indicate that central nervous system (cns) is highly vulnerable to systemic hyperthermia induced by whole body heating on conscious animals. in the present study, cerebral electrical activity or eeg (electroencephalogram) following exposure to high environmental heat has been studied in moving rats. rats were divided into three group (i) acute heat stress-subjected to a s...

Introduction: Stress is a main factor influencing brain functions as revealed by the electroencephalogram (EEG) recordings. Moreover, different stress durations seemingly cause perturbations in brain waves and lead to mental disorders. This study investigates the effects of acute, sub-chronic and chronic stress on EEG in rats.  Methods: Twenty-eight Wistar adult male rats were randomly all...

Background and Objective: Febrile seizures are one of the most common neurological disorders in children. The aim of this study was to investigate the extent of abnormal EEG reports and their association with other risk factors of febrile seizures. Material &Method: In this prospective observational study, all patients with febrile seizure admitted in Mousavi Hospital in Zanjan, Iran, from Ap...

اشرف صابر, دکتر شادی بازیار مبینا حسین فخرآبادی مهوان خداپرست,

مقدمه: آنسفالیت هرپسی، یک اختلال اورژانس نورولوژیک است. در این مطالعه یک مورد درمان موفقیت‌آمیز آنسفالیت هرپسی اسپورادیک در خانم باردار 26 هفته گزارش می­شود. معرفی بیمار: بیمار خانم باردار 30 ساله با سن بارداری 26 هفته بود که به‌علت کاهش سطح هوشیاری، گیجی، عدم پاسخ‌گویی به سؤالات، عدم شناخت اطرافیان، تهوع و استفراغ، سردرد دوطرفه ناحیه تمپورال و بی‌قراری، در سرویس زنان بیمارستان بنت‌الهدی بجنور...

Introduction and Aims: Alzheimer’s disease is the most prevalent neurodegenerative disorder and a type of dementia. 80% of dementia in older adults is because of Alzheimer’s disease. According to multiple research articles, Alzheimer's has several changes in EEG signals such as slowing of rhythms, reduction in complexity and reduction in functional associations, and disordered functional commun...

Journal: :iranian journal of child neurology 0
mohammad reza aalaei assistant professor of pediatric endocrinology, pediatric neurology research center, shahid beheshti university of medical sciences (sbmu), tehran, iran parvaneh karimzadeh associate professor of pediatric neurology, pediatric neurology research center, shahid beheshti university of medical sciences (sbmu), tehran, iran feisal rahimpour resident of pediatrics, pediatric neurology research center,shahid beheshti university of medical sciences (sbmu), tehran, iran

objective electroencephalogram (eeg) is an easy and non invasive evaluation method for diagnosis and early prognosis in children. our aim was to assess the association between eeg and the patients' developmental quotient (dq) level in phenylketonuria. materials & methods in this study, 94 pku patients (45 boys, 49 girls; mean age: 8.5 6.2 years) who were diagnosed through newborn screening test...

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