7 Hits in 0.87 sec

EEG-based trial-by-trial texture classification during active touch

Safaa Eldeeb, Douglas Weber, Jordyn Ting, Andac Demir, Deniz Erdogmus, Murat Akcakaya
2020 Scientific Reports  
AbstractTrial-by-trial texture classification analysis and identifying salient texture related EEG features during active touch that are minimally influenced by movement type and frequency conditions are the main contributions of this work. A total of twelve healthy subjects were recruited. Each subject was instructed to use the fingertip of their dominant hand's index finger to rub or tap three textured surfaces (smooth flat, medium rough, and rough) with three levels of movement frequency
more » ... roximately 2, 1 and 0.5 Hz). EEG and force data were collected synchronously during each touch condition. A systematic feature selection process was performed to select temporal and spectral EEG features that contribute to texture classification but have low contribution towards movement type and frequency classification. A tenfold cross validation was used to train two 3-class (each for texture and movement frequency classification) and a 2-class (movement type) Support Vector Machine classifiers. Our results showed that the total power in the mu (8–15 Hz) and beta (16–30 Hz) frequency bands showed high accuracy in discriminating among textures with different levels of roughness (average accuracy > 84%) but lower contribution towards movement type (average accuracy < 65%) and frequency (average accuracy < 58%) classification.
doi:10.1038/s41598-020-77439-7 pmid:33247177 fatcat:udxlcxxl2rfpvbboefe7zsxehe

HARP tracking using locally-uniform deformation assumption

Ahmed S Fahmy, Safaa M ElDeeb, Ayman M Khalifa
2014 Journal of Cardiovascular Magnetic Resonance  
doi:10.1186/1532-429x-16-s1-p370 pmcid:PMC4044490 fatcat:bdxkkdc3arbp3hwxjvps4tfza4

دراسة تحليلية لإستجابة المرشدين الزراعيين العاملين بمحافظة البحيرة لمصادر المعلومات الزراعية

Mostafa Hafiz, Safaa Eldeeb
2014 Journal of the Advances in Agricultural Researches  
doi:10.21608/jalexu.2014.160086 fatcat:4lyko7cchfcqrawt3xbwsmqe44

مستوى إستخدام الأخصائيين الإرشاديين للحاسب الآلي وتطبيقاته في العمل الإرشادي الزراعي ببعض محافظات جمهورية مصر العربية

Mostafa Hafiz, Safaa Eldeeb
2014 Journal of the Advances in Agricultural Researches  
The study aimed mainly to determine the level of utilizing computer and its applications in extension work. A questionnaire through personal interviews was use to collect data for this study from 87 respondents, statistical methods for analyzing research data included: mean, standard deviation, simple coloration coefficient, analysis of variance, and chi square. Important findings could summarized as follows: 1. The utilizing level of computer and its applications for about 29,9% of extension
more » ... ecialist was low, 46% has moderate level, while 24,1% had high level. 2. The result revealed significant variance between level of utilization of computer and its applications and each following variables: birth-places, duration serves in extension work, duration serves in extension centers, experience in agricultural work, number of information's sources, extension training, self estimation importance of computer and its applications, and work place. 3. The results showed that there was significant relationship between level of utilization of computer and its application and each of following variables: age, birth-places, duration serves in extension work, duration serves in extension centers, experience in agriculture work, number of information's sources, extension training, self estimation importance of computers and its applications, and work places. 4. The results revealed that the most important groups using computer and communication network are educated farmers' sons, large landowners, and local leaders. 5. The result showed that there are many problems facing the usage of computer and its applications in extension work such as: computers always need up-date, short in number of computers, illiteracy of farmers, and there are no training programs.
doi:10.21608/jalexu.2014.160284 fatcat:a54vv7ium5gplc4dk5j6gjcedq

Trial by trial EEG based BCI for distress versus non distress classification in individuals with ASD

Safaa Eldeeb, Busra T. Susam, Murat Akcakaya, Caitlin M. Conner, Susan W. White, Carla A. Mazefsky
2021 Scientific Reports  
AbstractAutism spectrum disorder (ASD) is a neurodevelopmental disorder that is often accompanied by impaired emotion regulation (ER). There has been increasing emphasis on developing evidence-based approaches to improve ER in ASD. Electroencephalography (EEG) has shown success in reducing ASD symptoms when used in neurofeedback-based interventions. Also, certain EEG components are associated with ER. Our overarching goal is to develop a technology that will use EEG to monitor real-time changes
more » ... in ER and perform intervention based on these changes. As a first step, an EEG-based brain computer interface that is based on an Affective Posner task was developed to identify patterns associated with ER on a single trial basis, and EEG data collected from 21 individuals with ASD. Accordingly, our aim in this study is to investigate EEG features that could differentiate between distress and non-distress conditions. Specifically, we investigate if the EEG time-locked to the visual feedback presentation could be used to classify between WIN (non-distress) and LOSE (distress) conditions in a game with deception. Results showed that the extracted EEG features could differentiate between WIN and LOSE conditions (average accuracy of 81%), LOSE and rest-EEG conditions (average accuracy 94.8%), and WIN and rest-EEG conditions (average accuracy 94.9%).
doi:10.1038/s41598-021-85362-8 pmid:33727625 pmcid:PMC7971030 fatcat:ocjz6qpwzvcbre2ah7jeosr574

Sage, Salvia officinalis L., Constituents, Hepatoprotective Activity, and Cytotoxicity Evaluations of the Essential Oils Obtained from Fresh and Differently Timed Dried Herbs: A Comparative Analysis

Hamdoon A. Mohammed, Hussein M. Eldeeb, Riaz A. Khan, Mohsen S. Al-Omar, Salman A. A. Mohammed, Mohammed S. M. Sajid, Mohamed S. A. Aly, Adel M. Ahmad, Ahmed A. H. Abdellatif, Safaa Yehia Eid, Mahmoud Zaki El-Readi
2021 Molecules  
Sage, Salvia officinalis L., is used worldwide as an aromatic herb for culinary purposes as well as a traditional medicinal agent for various ailments. Current investigations exhibited the effects of extended dryings of the herb on the yields, composition, oil quality, and hepatoprotective as well as anti-cancer biological activities of the hydrodistillation-obtained essential oils from the aerial parts of the plant. The essential oils' yields, compositions, and biological activities levels of
more » ... he fresh and differently timed and room-temperature dried herbs differed significantly. The lowest yields of the essential oil were obtained from the fresh herbs (FH, 631 mg, 0.16%), while the highest yield was obtained from the two-week dried herbs (2WDH, 1102 mg, 0.28%). A notable decrease in monoterpenes, with increment in the sesquiterpene constituents, was observed for the FH-based essential oil as compared to all the other batches of the essential oils obtained from the different-timed dried herbs. Additionally, characteristic chemotypic constituents of sage, i.e., α-pinene, camphene, β-pinene, myrcene, 1, 8-cineole, α-thujone, and camphor, were present in significantly higher proportions in all the dried herbs' essential oils as compared to the FH-based essential oil. The in vivo hepatoprotective activity demonstrated significant reductions in the levels of AST, ALT, and ALP, as well as a significant increase in the total protein (p < 0.05) contents level, as compared to the acetaminophen (AAP) administered experimental group of rats. A significant reduction (p < 0.05) in the ALT level was demonstrated by the 4WDH-based essential oil in comparison to the FH-based essential oil. The levels of creatinine, cholesterol, and triglycerides were reduced (p < 0.05) in the pre-treated rats by the essential oil batches, with non-significant differences found among them as a result of the herbs dryings based oils. A notable increase in the viability of the cells, and total antioxidant capacity (TAOxC) levels, together with the reduction in malondialdehyde (MDA) levels were observed by the essential oils obtained from all the batches as compared with the AAP-treated cell-lines, HepG-2, HeLa, and MCF-7, that indicated the in vitro hepatoprotective effects of the sage essential oils. However, significant improvements in the in vivo and in vitro hepatoprotective activities with the 4WDH-based oil, as compared to all other essential oil-batches and silymarin standard demonstrated the beneficial effects of the drying protocol for the herb for its medicinal purposes.
doi:10.3390/molecules26195757 pmid:34641301 pmcid:PMC8510068 fatcat:n2wmosowwzdnrdszb52yfnrbhi

المیل الأدبی والعملیات المعرفیة لنموذج PASS وعلاقتهما بالأداء الکتابی فی اللغة الإنجلیزیة لدی تلامیذ المرحلة الإعدادیة

هیام بدوی على فراج
2019 مجلة البحث العلمى فى التربیة  
Prepared by: Ayman Eldeeb Mohammed , Supervision: Safaa Alaser 3) The writing performance test among the preparatory school pupils (prepared by the researcher) 4) A social and cultural scale among the  ... 
doi:10.21608/jsre.2019.33860 fatcat:3glyku4yd5hotllutgorbvzt7u