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https://www.readbyqxmd.com/read/28816702/as-above-so-below-towards-understanding-inverse-models-in-bci
#1
Jussi T Lindgren
In Brain-Computer Interfaces (BCI), measurements of the users brain activity are classified into commands for the computer. With EEG-based BCIs, the origins of the classified phenomena are often considered to be spatially localized in the cortical volume and mixed in the EEG. Does the reconstruction of the source activities in the volume help in building more accurate BCIs? The answer remains inconclusive despite previous work. In this paper, we study the question by contrasting the physiology-driven source reconstruction with data-driven representations obtained by statistical machine learning...
August 17, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28816474/deficits-in-category-learning-in-older-adults-rule-based-versus-clustering-accounts
#2
Stephen P Badham, Adam N Sanborn, Elizabeth A Maylor
Memory research has long been one of the key areas of investigation for cognitive aging researchers but only in the last decade or so has categorization been used to understand age differences in cognition. Categorization tasks focus more heavily on the grouping and organization of items in memory, and often on the process of learning relationships through trial and error. Categorization studies allow researchers to more accurately characterize age differences in cognition: whether older adults show declines in the way in which they represent categories with simple rules or declines in representing categories by similarity to past examples...
August 2017: Psychology and Aging
https://www.readbyqxmd.com/read/28812307/the-development-of-perceptual-averaging-learning-what-to-do-not-just-how-to-do-it
#3
Pete R Jones, Tessa M Dekker
The mature visual system condenses complex scenes into simple summary statistics (e.g., average size, location, orientation, etc.). However, children, often perform poorly on perceptual averaging tasks. Children's difficulties are typically thought to represent the suboptimal implementation of an adult-like strategy. This paper examines another possibility: that children actually make decisions in a qualitatively different way to adults (optimal implementation of a non-ideal strategy). Ninety children (6-7, 8-9, 10-11 years) and 30 adults were asked to locate the middle of randomly generated dot-clouds...
August 15, 2017: Developmental Science
https://www.readbyqxmd.com/read/28812154/robotic-versus-laparoscopic-versus-open-colorectal-surgery-towards-defining-criteria-to-the-right-choice
#4
Matthew Zelhart, Andreas M Kaiser
OBJECTIVE: Analysis of various parameters related to the patient, the disease, and the needed surgical maneuvers to develop guidance for preoperative selection of the appropriate and the best approach for a given patient. Rapid advances in minimally invasive surgical technology are fascinating and challenging alike. It can be difficult for surgeons to keep up with new modalities that come on to the market place and to assess their true value, i.e., distinguish between fashionable trends versus scientific evidence...
August 15, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28809709/a-new-method-for-automatic-sleep-stage-classification
#5
Junming Zhang, Yan Wu
Traditionally, automatic sleep stage classification is quite a challenging task because of the difficulty in translating open-textured standards to mathematical models and the limitations of handcrafted features. In this paper, a new system for automatic sleep stage classification is presented. Compared with existing sleep stage methods, our method can capture the sleep information hidden inside electroencephalography (EEG) signals and automatically extract features from raw data. To translate open sleep stage standards into machine rules recognized by computers, a new model named fast discriminative complex-valued convolutional neural network (FDCCNN) is proposed to extract features from raw EEG data and classify sleep stages...
August 14, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28803440/electrical-impedance-tomography-for-diagnosis-and-monitoring-of-pulmonary-function-disorders-in-the-intensive-care-unit-case-report-and-review-of-literature
#6
Szymon Białka, Maja Copik, Katarzyna Rybczyk, Hanna Misiołek
The aim of this paper is to describe the possibility of using Electrical Impedance Tomography (EIT) as a treatment monitoring tool in the ICU. It was based on case report and literature review. A 19-year-old female was admitted to ICU due to severe acute respiratory distress syndrome. Despite aggressive treatment there was no improvement. We decided to use EIT in the monitoring of treatment because of difficulties in transporting the patient to the radiology department in order to perform a control CT scan...
2017: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/28802770/efficacy-of-navigation-may-be-influenced-by-retrosplenial-cortex-mediated-learning-of-landmark-stability
#7
Stephen D Auger, Peter Zeidman, Eleanor A Maguire
Human beings differ considerably in their ability to orient and navigate within the environment, but it has been difficult to determine specific causes of these individual differences. Permanent, stable landmarks are thought to be crucial for building a mental representation of an environment. Poor, compared to good, navigators have been shown to have difficulty identifying permanent landmarks, with a concomitant reduction in functional MRI (fMRI) activity in the retrosplenial cortex. However, a clear association between navigation ability and the learning of permanent landmarks has not been established...
August 9, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28802436/quantifying-the-cognitive-cost-of-laparo-endoscopic-single-site-surgeries-gaze-based-indices
#8
Leandro L Di Stasi, Carolina Díaz-Piedra, Juan Francisco Ruiz-Rabelo, Héctor Rieiro, Jose M Sanchez Carrion, Andrés Catena
BACKGROUND: Despite the growing interest concerning the laparo-endoscopic single-site surgery (LESS) procedure, LESS presents multiple difficulties and challenges that are likely to increase the surgeon's cognitive cost, in terms of both cognitive load and performance. Nevertheless, there is currently no objective index capable of assessing the surgeon cognitive cost while performing LESS. We assessed if gaze-based indices might offer unique and unbiased measures to quantify LESS complexity and its cognitive cost...
November 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28802184/functional-neural-bases-of-numerosity-judgments-in-healthy-adults-born-preterm
#9
Caron A C Clark, Yating Liu, Nicolas Lee Abbot Wright, Alan Bedrick, Jamie O Edgin
High rates of mathematics learning disabilities among individuals born preterm (<37weeksGA) have spurred calls for a greater understanding of the nature of these weaknesses and their neural underpinnings. Groups of healthy, high functioning young adults born preterm and full term (n=20) completed a symbolic and non-symbolic magnitude comparison task while undergoing functional MRI scanning. Collectively, participants showed activation in superior and inferior frontal and parietal regions previously linked to numeric processing when comparing non-symbolic magnitude arrays separated by small numeric distances...
August 9, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28800632/radar-a-novel-fast-screening-method-for-reading-difficulties-with-special-focus-on-dyslexia
#10
Ioannis Smyrnakis, Vassilios Andreadakis, Vassilios Selimis, Michail Kalaitzakis, Theodora Bachourou, Georgios Kaloutsakis, George D Kymionis, Stelios Smirnakis, Ioannis M Aslanides
Dyslexia is a developmental learning disorder of single word reading accuracy and/or fluency, with compelling research directed towards understanding the contributions of the visual system. While dyslexia is not an oculomotor disease, readers with dyslexia have shown different eye movements than typically developing students during text reading. Readers with dyslexia exhibit longer and more frequent fixations, shorter saccade lengths, more backward refixations than typical readers. Furthermore, readers with dyslexia are known to have difficulty in reading long words, lower skipping rate of short words, and high gaze duration on many words...
2017: PloS One
https://www.readbyqxmd.com/read/28799958/learning-curve-of-small-incision-lenticule-extraction-challenges-and-complications
#11
Jeewan S Titiyal, Manpreet Kaur, Anubha Rathi, Ruchita Falera, Manthan Chaniyara, Namrata Sharma
PURPOSE: To describe the intraoperative complications observed during the initial learning curve of small incision lenticule extraction (SMILE) and their management. METHODS: Prospective evaluation of 100 consecutive eyes (50 patients) undergoing SMILE was performed at an apex tertiary care ophthalmic center. Patients older than 18 years with a stable refractive error ranging from -1.0 to -10.0 D myopia and up to 3.0 D astigmatism were included. Any intraoperative complications and their management were noted...
August 9, 2017: Cornea
https://www.readbyqxmd.com/read/28798212/the-dna-triangle-and-its-application-to-learning-meiosis
#12
L Kate Wright, Christina M Catavero, Dina L Newman
Although instruction on meiosis is repeated many times during the undergraduate curriculum, many students show poor comprehension even as upper-level biology majors. We propose that the difficulty lies in the complexity of understanding DNA, which we explain through a new model, the DNA triangle The DNA triangle integrates three distinct scales at which one can think about DNA: chromosomal, molecular, and informational Through analysis of interview and survey data from biology faculty and students through the lens of the DNA triangle, we illustrate important differences in how novices and experts are able to explain the concepts of ploidy, homology, and mechanism of homologous pairing Similarly, analysis of passages from 16 different biology textbooks shows a large divide between introductory and advanced material, with introductory books omitting explanations of meiosis-linked concepts at the molecular level of DNA...
2017: CBE Life Sciences Education
https://www.readbyqxmd.com/read/28796092/oral-administration-of-clinical-stage-drug-candidate-sens-401-effectively-reduces-cisplatin-induced-hearing-loss-in-rats
#13
Mathieu Petremann, Christophe Tran Van Ba, Audrey Broussy, Charlotte Romanet, Jonas Dyhrfjeld-Johnsen
HYPOTHESIS: SENS-401, an oral clinical-stage drug, may reduce cisplatin-induced hearing loss and cochlear damage in an in vivo model. BACKGROUND: Cisplatin is commonly associated with hearing loss, causing significant learning and behavioral difficulties in the pediatric cancer population, and for which there are currently no clinical solutions. SENS-401 has previously been shown to improve acoustic trauma-induced hearing loss in vivo. METHODS: The effect of SENS-401 (R-azasetron besylate) on cisplatin IC50 values was evaluated in a panel of cisplatin-sensitive cell lines (NIH:OVCAR-3, SK-N-AS, NCI-H460, FaDu)...
August 8, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28795255/learning-the-rules-of-the-rock-paper-scissors-game-chimpanzees-versus-children
#14
Jie Gao, Yanjie Su, Masaki Tomonaga, Tetsuro Matsuzawa
The present study aimed to investigate whether chimpanzees (Pan troglodytes) could learn a transverse pattern by being trained in the rules of the rock-paper-scissors game in which "paper" beats "rock," "rock" beats "scissors," and "scissors" beats "paper." Additionally, this study compared the learning processes between chimpanzees and children. Seven chimpanzees were tested using a computer-controlled task. They were trained to choose the stronger of two options according to the game rules. The chimpanzees first engaged in the paper-rock sessions until they reached the learning criterion...
August 10, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28794428/japan-s-initiative-on-rare-and-undiagnosed-diseases-irud-towards-an-end-to-the-diagnostic-odyssey
#15
Takeya Adachi, Kazuo Kawamura, Yoshihiko Furusawa, Yuji Nishizaki, Noriaki Imanishi, Senkei Umehara, Kazuo Izumi, Makoto Suematsu
Japan has been facing challenges relating to specifically defined rare diseases, called Nan-Byo in Japanese (literally 'difficult'+'illness'), and has already taken measures for them since 1972. This governmental support has surely benefited Nan-Byo patients; however, those suffering from medically unidentified conditions do not fall into this scheme and thus still confront difficulty in obtaining an examination, a diagnosis, and a treatment. To identify such rare and often undiagnosed diseases, we must integrate systematic diagnosis by medical experts with phenotypic and genetic data matching...
September 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28793368/suitability-of-asthma-education-materials-for-school-age-children-implications-for-health-literacy
#16
Yu-Fen Tzeng, Bih-Shya Gau
AIMS AND OBJECTIVES: This study investigated the suitability of asthma education materials for school-age children with asthma and elucidated how these children used their health-literacy abilities to identify whether the materials can be accepted, comprehended, and applied. BACKGROUND: Effective asthma self-management education is influenced by the suitability of materials and an individual's health literacy. DESIGN: A mixed-method research design was developed using quantitative and qualitative surveys...
August 9, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28793239/ghosts-in-machine-learning-for-cognitive-neuroscience-moving-from-data-to-theory
#17
REVIEW
Thomas Carlson, Erin Goddard, David M Kaplan, Colin Klein, J Brendan Ritchie
The application of machine learning methods to neuroimaging data has fundamentally altered the field of cognitive neuroscience. Future progress in understanding brain function using these methods will require addressing a number of key methodological and interpretive challenges. Because these challenges often remain unseen and metaphorically "haunt" our efforts to use these methods to understand the brain, we refer to them as "ghosts". In this paper, we describe three such ghosts, situate them within a more general framework from philosophy of science, and then describe steps to address them...
August 6, 2017: NeuroImage
https://www.readbyqxmd.com/read/28792447/ambiguous-results-when-using-the-ambiguous-cue-paradigm-to-assess-learning-and-cognitive-bias-in-gorillas-and-a-black-bear
#18
Molly C McGuire, Jennifer Vonk, Zoe Johnson-Ulrich
Cognitive bias tests are frequently used to assess affective state in nonhumans. We adapted the ambiguous-cue paradigm to assess affective states and to compare learning of reward associations in two distantly related species, an American black bear and three Western lowland gorillas. Subjects were presented with three training stimuli: one that was always rewarded (P), one that was never rewarded (N) and one that was ambiguous (A) because its reward association depended on whether it had been paired with P (PA pairing) or N (NA pairing)...
August 9, 2017: Behavioral Sciences
https://www.readbyqxmd.com/read/28790938/mathematics-anxiety-and-statistics-anxiety-shared-but-also-unshared-components-and-antagonistic-contributions-to-performance-in-statistics
#19
Manuela Paechter, Daniel Macher, Khatuna Martskvishvili, Sigrid Wimmer, Ilona Papousek
In many social science majors, e.g., psychology, students report high levels of statistics anxiety. However, these majors are often chosen by students who are less prone to mathematics and who might have experienced difficulties and unpleasant feelings in their mathematics courses at school. The present study investigates whether statistics anxiety is a genuine form of anxiety that impairs students' achievements or whether learners mainly transfer previous experiences in mathematics and their anxiety in mathematics to statistics...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28790252/-achievement-and-future-direction-of-the-peace-project-a-national-education-project-for-palliative-care-education
#20
Yoshiyuki Kizawa, Ryo Yamamoto
Although palliative care is assuming an increasingly important role in patient care, most physicians did not learn to provide palliative care during their medical training. To address these serious deficiencies in physician training in palliative care, government decided to provide basic palliative education program for all practicing cancer doctors as a national policy namely Palliative care Emphasis program on symptom management and Assessment for Continuous medical Education(PEACE). The program was 2-days workshop based on adult learning theory and focusing on symptom management and communication...
July 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
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