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https://www.readbyqxmd.com/read/29773974/orexin-a-differentially-influences-the-extinction-retention-of-recent-and-remote-fear-memory
#1
Le Shi, Wenhao Chen, Jiahui Deng, Sijing Chen, Ying Han, Muhammad Z Khan, Jiajia Liu, Jianyu Que, Yanping Bao, Lin Lu, Jie Shi
Recently the role of the orexin system in the learning and memory, especially orexin A, which could enhance fear memory through regulating the activity of amygdala, has drawn considerable attention. However, the relationship between orexin A and extinction memory remains unclear. To investigate the effect of orexin A on extinction memory in humans, we recruited 43 male subjects and divided them into a recent group and remote group. After acquiring Pavlovian fear conditioning, individuals in recent group experienced fear extinction 24 h after acquisition, and remote group underwent extinction 2 weeks later...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29771918/a-hybrid-q-learning-sine-cosine-based-strategy-for-addressing-the-combinatorial-test-suite-minimization-problem
#2
Kamal Z Zamli, Fakhrud Din, Bestoun S Ahmed, Miroslav Bures
The sine-cosine algorithm (SCA) is a new population-based meta-heuristic algorithm. In addition to exploiting sine and cosine functions to perform local and global searches (hence the name sine-cosine), the SCA introduces several random and adaptive parameters to facilitate the search process. Although it shows promising results, the search process of the SCA is vulnerable to local minima/maxima due to the adoption of a fixed switch probability and the bounded magnitude of the sine and cosine functions (from -1 to 1)...
2018: PloS One
https://www.readbyqxmd.com/read/29771811/use-of-emergency-manuals-during-actual-critical-events-in-china-a-multi-institutional-study
#3
Jeffrey Huang, Jiayan Wu, Christina Dai, Xianwei Zhang, Hui Ju, Yiqi Chen, Chunyuan Zhang, Fan Ye, Yi Tan, Yongbo Zong, Telong Liu
INTRODUCTION: Emergency manuals (EMs) can help healthcare providers respond to crises more efficiently. Three anesthesia EMs have been translated into Chinese. These EMs have been made publicly available as a free document downloadable in China. A year after these Chinese versions of EMs were published, we conducted a multi-institutional survey in China to assess the progress of how well EM had been adapted and used in the setting of critical events. METHODS: Our study used a multi-institutional, anonymous electronic survey...
May 16, 2018: Simulation in Healthcare: Journal of the Society for Simulation in Healthcare
https://www.readbyqxmd.com/read/29769456/machine-learning-based-texture-analysis-of-contrast-enhanced-mr-imaging-to-differentiate-between-glioblastoma-and-primary-central-nervous-system-lymphoma
#4
Akira Kunimatsu, Natsuko Kunimatsu, Koichiro Yasaka, Hiroyuki Akai, Kouhei Kamiya, Takeyuki Watadani, Harushi Mori, Osamu Abe
PURPOSE: Although advanced MRI techniques are increasingly available, imaging differentiation between glioblastoma and primary central nervous system lymphoma (PCNSL) is sometimes confusing. We aimed to evaluate the performance of image classification by support vector machine, a method of traditional machine learning, using texture features computed from contrast-enhanced T1 -weighted images. METHODS: This retrospective study on preoperative brain tumor MRI included 76 consecutives, initially treated patients with glioblastoma (n = 55) or PCNSL (n = 21) from one institution, consisting of independent training group (n = 60: 44 glioblastomas and 16 PCNSLs) and test group (n = 16: 11 glioblastomas and 5 PCNSLs) sequentially separated by time periods...
May 16, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/29768649/selection-for-associative-learning-of-colour-stimuli-reveals-correlated-evolution-of-this-learning-ability-across-multiple-stimuli-and-rewards
#5
Maartje Liefting, Katja M Hoedjes, Cécile Le Lann, Hans M Smid, Jacintha Ellers
We are only starting to understand how variation in cognitive ability can result from local adaptations to environmental conditions. A major question in this regard is to what extent selection on cognitive ability in a specific context affects that ability in general through correlated evolution. To address this question we performed artificial selection on visual associative learning in female Nasonia vitripennis wasps. Using appetitive conditioning in which a visual stimulus was offered in association with a host reward, the ability to learn visual associations was enhanced within 10 generations of selection...
May 16, 2018: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/29765403/effect-of-maternal-administration-of-edible-bird-s-nest-on-the-learning-and-memory-abilities-of-suckling-offspring-in-mice
#6
Yong Xie, Hongliang Zeng, Zhiji Huang, Hui Xu, Qunyan Fan, Yi Zhang, Baodong Zheng
Although human brains continue developing throughout the underage developmental stages, the infancy period is considered the most important one for the whole life. It has been reported that sialic acid from edible bird's nest (EBN) can facilitate the development of brain and intelligence. In this study, by oral administration of EBN to female mice during the pregnancy or lactation period, the effects of EBN on the levels of sialic acid in mouse milk were determined using high-performance liquid chromatography (HPLC)...
2018: Neural Plasticity
https://www.readbyqxmd.com/read/29763676/effect-of-single-session-dual-tdcs-before-physical-therapy-on-lower-limb-performance-in-sub-acute-stroke-patients-a-randomized-sham-controlled-crossover-study
#7
Wanalee Klomjai, Benchaporn Aneksan, Anuchai Pheungphrarattanatrai, Thanwarat Chantanachai, Nattha Choowong, Soontaree Bunleukhet, Paradee Auervitchayapat, Yongchai Nilanon, Vimonwan Hiengkaew
Anodal stimulation increases cortical excitably, whereas cathodal stimulation decreases cortical excitability. Dual transcranial direct current stimulation (tDCS; anodal over the lesioned hemisphere, cathodal over the non-lesioned hemisphere) was found to enhance motor learning. The corresponding tDCS-induced changes were reported to reduce the inhibition exerted by the unaffected hemisphere on the affected hemisphere and restore the normal balance of the interhemispheric inhibition. Most studies were devoted to the possible modification of upper-limb motor function after tDCS; however, almost no study has demonstrated its effects on lower-limb function and gait, which are also commonly disordered in stroke patients with motor deficits...
May 12, 2018: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/29763466/the-enhancement-effect-of-estradiol-on-contextual-fear-conditioning-in-female-mice
#8
Yui K Matsumoto, Masanori Kasai, Kazuya Tomihara
Several studies have reported regulatory effects of estrogens on fear conditioning in female rodents. However, these studies used different doses, durations, and/or administration methods, and reported inconsistent results. To clarify the effect of estrogen on fear conditioning, we investigated the effects of different doses and durations of estradiol administration on freezing behavior during contextual fear conditioning in ovariectomized (OVX) mice. In Experiment 1, OVX ICR mice received a single subcutaneous (s...
2018: PloS One
https://www.readbyqxmd.com/read/29762903/the-role-of-anatomy-computer-assisted-learning-on-spatial-abilities-of-medical-students
#9
Bruno Guimarães, João Firmino-Machado, Stanislav Tsisar, Benedita Viana, Marco Pinto-Sousa, Pedro Vieira-Marques, Ricardo Cruz-Correia, Maria Amélia Ferreira
Currently, medical education context poses different challenges to anatomy, contributing to the introduction of new pedagogical approaches, such as computer-assisted learning (CAL). This approach provides insight into students' learning profiles and skills that enhance anatomy knowledge acquisition. To understand the influence of anatomy CAL on spatial abilities, a study was conducted. A total of 671 medical students attending Musculoskeletal (MA) and Cardiovascular Anatomy (CA) courses, were allocated to one of three groups (MA Group, CA Group, MA + CA Group)...
May 15, 2018: Anatomical Sciences Education
https://www.readbyqxmd.com/read/29761358/deep-learning-for-staging-liver-fibrosis-on-ct-a-pilot-study
#10
Koichiro Yasaka, Hiroyuki Akai, Akira Kunimatsu, Osamu Abe, Shigeru Kiryu
OBJECTIVES: To investigate whether liver fibrosis can be staged by deep learning techniques based on CT images. METHODS: This clinical retrospective study, approved by our institutional review board, included 496 CT examinations of 286 patients who underwent dynamic contrast-enhanced CT for evaluations of the liver and for whom histopathological information regarding liver fibrosis stage was available. The 396 portal phase images with age and sex data of patients (F0/F1/F2/F3/F4 = 113/36/56/66/125) were used for training a deep convolutional neural network (DCNN); the data for the other 100 (F0/F1/F2/F3/F4 = 29/9/14/16/32) were utilised for testing the trained network, with the histopathological fibrosis stage used as reference...
May 14, 2018: European Radiology
https://www.readbyqxmd.com/read/29759258/improving-maternal-safety-at-scale-with-the-mentor-model-of-collaborative-improvement
#11
Elliott K Main, Ravi Dhurjati, Valerie Cape, Julie Vasher, Anisha Abreo, Shen-Chih Chang, Jeffrey B Gould
BACKGROUND: Obstetric safety bundles, consisting of action steps shown to improve outcomes, have been developed to address the most common and preventable causes of maternal morbidity and mortality. Implementing these best practices across all birthing facilities remains an important and challenging clinical and public health priority. METHODS: The California Maternal Quality Care Collaborative (CMQCC) developed an innovative external mentor model for large-scale collaborative improvement in which participating organizations were subdivided into small teams of six to eight hospitals, led by a paired dyad of physician and nurse leaders...
May 2018: Joint Commission Journal on Quality and Patient Safety
https://www.readbyqxmd.com/read/29754382/3d-2d-model-to-image-registration-by-imitation-learning-for-cardiac-procedures
#12
Daniel Toth, Shun Miao, Tanja Kurzendorfer, Christopher A Rinaldi, Rui Liao, Tommaso Mansi, Kawal Rhode, Peter Mountney
PURPOSE: In cardiac interventions, such as cardiac resynchronization therapy (CRT), image guidance can be enhanced by involving preoperative models. Multimodality 3D/2D registration for image guidance, however, remains a significant research challenge for fundamentally different image data, i.e., MR to X-ray. Registration methods must account for differences in intensity, contrast levels, resolution, dimensionality, field of view. Furthermore, same anatomical structures may not be visible in both modalities...
May 12, 2018: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29753765/maximization-of-the-usage-of-coronary-cta-derived-plaque-information-using-a-machine-learning-based-algorithm-to-improve-risk-stratification-insights-from-the-confirm-registry
#13
Alexander R van Rosendael, Gabriel Maliakal, Kranthi K Kolli, Ashley Beecy, Subhi J Al'Aref, Aeshita Dwivedi, Gurpreet Singh, Mohit Panday, Amit Kumar, Xiaoyue Ma, Stephan Achenbach, Mouaz H Al-Mallah, Daniele Andreini, Jeroen J Bax, Daniel S Berman, Matthew J Budoff, Filippo Cademartiri, Tracy Q Callister, Hyuk-Jae Chang, Kavitha Chinnaiyan, Benjamin J W Chow, Ricardo C Cury, Augustin DeLago, Gudrun Feuchtner, Martin Hadamitzky, Joerg Hausleiter, Philipp A Kaufmann, Yong-Jin Kim, Jonathon A Leipsic, Erica Maffei, Hugo Marques, Gianluca Pontone, Gilbert L Raff, Ronen Rubinshtein, Leslee J Shaw, Todd C Villines, Heidi Gransar, Yao Lu, Erica C Jones, Jessica M Peña, Fay Y Lin, James K Min
INTRODUCTION: Machine learning (ML) is a field in computer science that demonstrated to effectively integrate clinical and imaging data for the creation of prognostic scores. The current study investigated whether a ML score, incorporating only the 16 segment coronary tree information derived from coronary computed tomography angiography (CCTA), provides enhanced risk stratification compared with current CCTA based risk scores. METHODS: From the multi-center CONFIRM registry, patients were included with complete CCTA risk score information and ≥3 year follow-up for myocardial infarction and death (primary endpoint)...
April 30, 2018: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29752843/propofol-anesthesia-exposure-and-nonaversive-memory-retrieval-and-the-expression-of-molecules-involved-in-memory-process-in-the-dorsal-hippocampus-in-peripubertal-rats
#14
Željko Pavković, Desanka Milanović, Sabera Ruždijić, Selma Kanazir, Vesna Pešić
BACKGROUND: The effects of anesthetic drugs on postoperative cognitive function in children are not well defined and have not been experimentally addressed. AIMS: The present study aimed to examine the influence of propofol anesthesia exposure on nonaversive hippocampus-dependent learning and biochemical changes involved in memory process in the dorsal hippocampus, in peripubertal rats as the rodent model of periadolescence. METHODS: The intersession spatial habituation and the novel object recognition tasks were used to assess spatial and nonspatial, nonaversive hippocampus-dependent learning...
May 12, 2018: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/29752765/adaptive-template-generation-for-amyloid-pet-using-a-deep-learning-approach
#15
Seung Kwan Kang, Seongho Seo, Seong A Shin, Min Soo Byun, Dong Young Lee, Yu Kyeong Kim, Dong Soo Lee, Jae Sung Lee
Accurate spatial normalization (SN) of amyloid positron emission tomography (PET) images for Alzheimer's disease assessment without coregistered anatomical magnetic resonance imaging (MRI) of the same individual is technically challenging. In this study, we applied deep neural networks to generate individually adaptive PET templates for robust and accurate SN of amyloid PET without using matched 3D MR images. Using 681 pairs of simultaneously acquired 11 C-PIB PET and T1-weighted 3D MRI scans of AD, MCI, and cognitively normal subjects, we trained and tested two deep neural networks [convolutional auto-encoder (CAE) and generative adversarial network (GAN)] that produce adaptive best PET templates...
May 11, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29751149/an-inhibitor-of-soluble-epoxide-hydrolase-ameliorates-diabetes-induced-learning-and-memory-impairment-in-rats
#16
Nathani Minaz, Rema Razdan, Bruce D Hammock, Sumanta Kumar Goswami
BACKGROUND: Pharmacological inhibition of soluble epoxide hydrolase (sEH) enhances the synaptic function in the CNS and has a protective role in cognitive decline. We hypothesized that the sEH inhibitor TPPU might prevent the diabetes-induced decline in learning and memory which is associated with alteration in the level of neurotransmitters and oxidative stress. METHODS: Type 1 diabetes was induced in rats and the animals were treated with TPPU for 8 weeks. The learning and memory functions were assessed by the Barnes maze and a step-down test...
May 8, 2018: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/29750975/nicotine-increases-fear-responses-and-brain-acetylcholinesterase-activity-in-a-context-dependent-manner-in-zebrafish
#17
Paola R Ziani, Talise E Müller, Flavia V Stefanello, Barbara D Fontana, Tâmie Duarte, Julia Canzian, Denis B Rosemberg
Nicotine is an alkaloid with positive effects on learning and memory processes. Exposure to conspecific alarm substance (CAS) elicits fear responses in zebrafish, but the effects of nicotine on aversive behaviors and associative learning in this species remain unclear. Here, we evaluated whether nicotine enhances contextual fear responses in zebrafish and investigated a putative involvement of brain acetylcholinesterase (AChE) in associative learning. Fish were exposed to 1 mg/L nicotine for 3 min and then kept in non-chlorinated water for 20 min...
May 8, 2018: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/29745680/associations-of-perceived-norms-with-intentions-to-learn-genomic-sequencing-results-roles-for-attitudes-and-ambivalence
#18
Allecia E Reid, Jennifer M Taber, Rebecca A Ferrer, Barbara B Biesecker, Katie L Lewis, Leslie G Biesecker, William M P Klein
OBJECTIVE: Genomic sequencing is becoming increasingly accessible, highlighting the need to understand the social and psychological factors that drive interest in receiving testing results. These decisions may depend on perceived descriptive norms (how most others behave) and injunctive norms (what is approved of by others). We predicted that descriptive norms would be directly associated with intentions to learn genomic sequencing results, whereas injunctive norms would be associated indirectly, via attitudes...
May 10, 2018: Health Psychology: Official Journal of the Division of Health Psychology, American Psychological Association
https://www.readbyqxmd.com/read/29742960/amantadine-did-not-positively-impact-cognition-in-chronic-traumatic-brain-injury-a-multi-site-randomized-controlled-trial
#19
Flora Hammond, Mark Sherer, James F Malec, Ross D Zafonte, Sureyya Dikmen, Jennifer A Bogner, Kathleen Bell, Jason Barber, Nancy Temkin
Despite limited evidence to support the use of amantadine to enhance cognitive function after traumatic brain injury, the clinical use for this purpose is highly prevalent and is often based on inferred belief systems. The purpose of this study was to assess effect of amantadine on cognition among individuals with a history of traumatic brain injury and behavioral disturbance employing a parallel-group, randomized, double-blind, placebo-controlled trial of amantadine 100 mg twice daily vs placebo for 60 days...
May 10, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29740398/neurosteroids-in-adult-hippocampus-of-male-and-female-rodents-biosynthesis-and-actions-of-sex-steroids
#20
REVIEW
Yasushi Hojo, Suguru Kawato
The brain is not only the target of steroid hormones but also is able to locally synthesize steroids de novo . Evidence of the local production of steroids in the brain has been accumulating in various vertebrates, including teleost fish, amphibia, birds, rodents, non-human primates, and humans. In this review, we mainly focus on the local production of sex steroids in the hippocampal neurons of adult rodents (rats and mice), a center for learning and memory. From the data of the hippocampus of adult male rats, hippocampal principal neurons [pyramidal cells in CA1-CA3 and granule cells in dentate gyrus (DG)] have a complete system for biosynthesis of sex steroids...
2018: Frontiers in Endocrinology
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