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https://www.readbyqxmd.com/read/28436904/user-preference-based-dual-memory-neural-model-with-memory-consolidation-approach
#1
Jauwairia Nasir, Yong-Ho Yoo, Deok-Hwa Kim, Jong-Hwan Kim
Memory modeling has been a popular topic of research for improving the performance of autonomous agents in cognition related problems. Apart from learning distinct experiences correctly, significant or recurring experiences are expected to be learned better and be retrieved easier. In order to achieve this objective, this paper proposes a user preference-based dual-memory adaptive resonance theory network model, which makes use of a user preference to encode memories with various strengths and to learn and forget at various rates...
April 24, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28436903/robust-multiview-data-analysis-through-collective-low-rank-subspace
#2
Zhengming Ding, Yun Fu
Multiview data are of great abundance in real-world applications, since various viewpoints and multiple sensors desire to represent the data in a better way. Conventional multiview learning methods aimed to learn multiple view-specific transformations meanwhile assumed the view knowledge of training, and test data were available in advance. However, they would fail when we do not have any prior knowledge for the probe data's view information, since the correct view-specific projections cannot be utilized to extract effective feature representations...
April 17, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28436902/learning-to-predict-consequences-as-a-method-of-knowledge-transfer-in-reinforcement-learning
#3
Eric Chalmers, Edgar Bermudez Contreras, Brandon Robertson, Artur Luczak, Aaron Gruber
The reinforcement learning (RL) paradigm allows agents to solve tasks through trial-and-error learning. To be capable of efficient, long-term learning, RL agents should be able to apply knowledge gained in the past to new tasks they may encounter in the future. The ability to predict actions' consequences may facilitate such knowledge transfer. We consider here domains where an RL agent has access to two kinds of information: agent-centric information with constant semantics across tasks, and environment-centric information, which is necessary to solve the task, but with semantics that differ between tasks...
April 17, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28436885/investigating-correlation-between-protein-sequence-similarity-and-semantic-similarity-using-gene-ontology-annotations
#4
Najmul Ikram, Muhammad Qadir, Muhammad Afzal
Sequence similarity is a commonly used measure to compare proteins. With the increasing use of ontologies, semantic (function) similarity is getting importance. The correlation between these measures has been applied in the evaluation of new semantic similarity methods, and in protein function prediction. In this research, we investigate the relationship between the two similarity methods. The results suggest absence of a strong correlation between sequence and semantic similarities. There is a large number of proteins with low sequence similarity and high semantic similarity...
April 18, 2017: IEEE/ACM Transactions on Computational Biology and Bioinformatics
https://www.readbyqxmd.com/read/28436854/manifold-embedding-and-semantic-segmentation-for-intraoperative-guidance-with-hyperspectral-brain-imaging
#5
Daniele Ravi, Himar Fabelo, Gustavo Marrero Callico, GuangZhong Yang
Recent advances in hyperspectral imaging have made it a promising solution for intra-operative tissue characterization, with the advantages of being non-contact, non-ionizing and non-invasive. Working with hyperspectral images in vivo, however, is not straightforward as the high dimensionality of the data makes real-time processing challenging. In this paper, a novel dimensionality reduction scheme and a new processing pipeline are introduced to obtain a detailed tumour classification map for intra-operative margin definition during brain surgery...
April 24, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28436344/inattention-tests-for-delirium
#6
Paul Regal
Voyer and colleagues (2016) report an interesting and important comparison of ten attention/concentration tests for DSM-5 delirium. I have a number of questions and comments as follows: (1) What training did the research assistants have? DSM-5 diagnosis is generally regarded as a decision by medical specialists. When the person has prior dementia, identifying delirium is a high-level medical skill. Behavioral and psychological symptoms of dementia can closely mimic delirium unless the examiner focuses on behavioral triggers and the speed of cognitive decline...
April 24, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28434708/dual-phase-18-f-florbetapir-positron-emission-tomography-in-patients-with-primary-progressive-aphasia-alzheimer-s-disease-and-healthy-controls-a-preliminary-study
#7
Hung-Chou Kuo, Ing-Tsung Hsiao, Chia-Ju Hsieh, Chu-Yun Huang, Kuo-Lun Huang, Yau-Yau Wai, Wen-Li Chuang, Mei-Ping Kung, Yi-Chuan Chu, Tzu-Chen Yen, Kun-Ju Lin, Chin-Chang Huang
BACKGROUND: To determine whether dual-phase (18)F-florbetapir positron emission tomography imaging with perfusion-like and amyloid deposition information can distinguish among primary progressive aphasia (PPA), Alzheimer's disease (AD), and healthy controls (HCs). METHODS: Patients diagnosed with PPA, including four semantic dementia (SD) and two progressive nonfluent aphasia (PNFA), as well as one logopenic variant (LV) of PPA, were studied. All PPA patients, and age-/sex-matched patients with probable AD (n=8) and HCs (n=8) were subjected to dual-phase (18)F-florbetapir imaging...
April 20, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28434642/-late-life-depression-or-prodromal-alzheimer-s-disease-which-tools-for-the-differential-diagnosis
#8
A-I Gasser, V Salamin, S Zumbach
INTRODUCTION: Depression and Alzheimer's disease are both very frequent in elderly people. Cognitive deficits are the hallmark of Alzheimer's disease, but they are also common in depressed elderly people who often present cognitive deficits such as memory, attention and executive function problems. On the other hand, people with early Alzheimer's disease demonstrate emotional and behavioral disorders generally encountered in depression such as loss of energy, apathy, mood disorder, and irritability...
April 20, 2017: L'Encéphale
https://www.readbyqxmd.com/read/28434153/machine-learning-xgboost-analysis-of-language-networks-to-classify-patients-with-epilepsy
#9
L Torlay, M Perrone-Bertolotti, E Thomas, M Baciu
Our goal was to apply a statistical approach to allow the identification of atypical language patterns and to differentiate patients with epilepsy from healthy subjects, based on their cerebral activity, as assessed by functional MRI (fMRI). Patients with focal epilepsy show reorganization or plasticity of brain networks involved in cognitive functions, inducing 'atypical' (compared to 'typical' in healthy people) brain profiles. Moreover, some of these patients suffer from drug-resistant epilepsy, and they undergo surgery to stop seizures...
April 22, 2017: Brain Informatics
https://www.readbyqxmd.com/read/28433835/the-relationship-between-pre-verbal-event-representations-and-semantic-structures-the-case-of-goal-and-source-paths
#10
Laura Lakusta, Danielle Spinelli, Kathryn Garcia
We explored the nature of infants' concepts for goal path and source path in motion events (e.g., the duck moved into the bowl/out of the bowl), specifically asking how infants' representations could support the acquisition of the semantic roles of goal path and source path in language. The results showed that 14.5-month-old infants categorized goal paths across different motion events (moving to X, moving on Y), and they also categorized source paths if the source reference objects were highly salient (relatively large in size and colorful)...
April 20, 2017: Cognition
https://www.readbyqxmd.com/read/28433347/phonological-and-semantic-processing-during-comprehension-in-wernicke-s-aphasia-an-n400-and-phonological-mapping-negativity-study
#11
Holly Robson, Emma Pilkington, Louise Evans, Vincent Deluca, James L Keidel
Comprehension impairments in Wernicke's aphasia are thought to result from a combination of impaired phonological and semantic processes. However, the relationship between these cognitive processes and language comprehension has only been inferred through offline neuropsychological tasks. This study used ERPs to investigate phonological and semantic processing during online single word comprehension. EEG was recorded in a group of Wernicke's aphasia n=8 and control participants n=10 while performing a word-picture verification task...
April 19, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28432988/comprehension-of-concrete-and-abstract-words-in-semantic-variant-primary-progressive-aphasia-and-alzheimer-s-disease-a-behavioral-and-neuroimaging-study
#12
Sven Joubert, Guillaume T Vallet, Maxime Montembeault, Mariem Boukadi, Maximiliano A Wilson, Robert Jr Laforce, Isabelle Rouleau, Simona M Brambati
The aim of this study was to investigate the comprehension of concrete, abstract and abstract emotional words in semantic variant primary progressive aphasia (svPPA), Alzheimer's disease (AD), and healthy elderly adults (HE) Three groups of participants (9 svPPA, 12 AD, 11 HE) underwent a general neuropsychological assessment, a similarity judgment task, and structural brain MRI. The three types of words were processed similarly in the group of AD participants. In contrast, patients in the svPPA group were significantly more impaired at processing concrete words than abstract words, while comprehension of abstract emotional words was in between...
April 19, 2017: Brain and Language
https://www.readbyqxmd.com/read/28432966/risk-for-eating-disorders-modulates-interpretation-bias-in-a-semantic-priming-task
#13
Kaylee Misener, Maya Libben
The current study used a semantic priming paradigm to investigate the presence of implicit interpretation biases for food and body shape words among 118 undergraduate females. Reaction times (RTs) were recorded while participants made lexical decisions (i.e., word vs. non-word judgments) to lexical targets that were preceded by negatively valenced eating disorder related (e.g., fat-PIZZA), eating disorder unrelated (e.g., party-PIZZA), or semantically unrelated (e.g., umbrella-PIZZA) prime words. Self-reported eating disorder traits were assessed using the Body Shape Questionnaire (BSQ-34), the Eating Attitudes Test (EAT-26), and the Eating Disorder Examination (EDE-Q 6...
April 19, 2017: Body Image
https://www.readbyqxmd.com/read/28432446/biasing-spatial-attention-with-semantic-information-an-event-coding-approach
#14
Tarek Amer, Davood G Gozli, Jay Pratt
We investigated the influence of conceptual processing on visual attention from the standpoint of Theory of Event Coding (TEC). The theory makes two predictions: first, an important factor in determining the influence of event 1 on processing event 2 is whether features of event 1 are bound into a unified representation (i.e., selection or retrieval of event 1). Second, whether processing the two events facilitates or interferes with each other should depend on the extent to which their constituent features overlap...
April 21, 2017: Psychological Research
https://www.readbyqxmd.com/read/28430974/using-transcranial-magnetic-stimulation-of-the-undamaged-brain-to-identify-lesion-sites-that-predict-language-outcome-after-stroke
#15
Diego L Lorca-Puls, Andrea Gajardo-Vidal, Mohamed L Seghier, Alexander P Leff, Varun Sethi, Susan Prejawa, Thomas M H Hope, Joseph T Devlin, Cathy J Price
Transcranial magnetic stimulation focused on either the left anterior supramarginal gyrus or opercular part of the left inferior frontal gyrus has been reported to transiently impair the ability to perform phonological more than semantic tasks. Here we tested whether phonological processing abilities were also impaired following lesions to these regions in right-handed, English speaking adults, who were investigated at least 1 year after a left-hemisphere stroke. When our regions of interest were limited to 0...
April 18, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28429648/-the-influence-of-scene-context-on-parafoveal-processing-of-objects
#16
Monica S Castelhano, Effie J Pereira
Many studies in reading have shown the enhancing effect of context on the processing of a word before it is directly fixated (parafoveal processing of words; Balota et al., 1985; Balota & Rayner, 1983; Ehrlich & Rayner, 1981). Here, we examined whether scene context influences the parafoveal processing of objects and enhances the extraction of object information. Using a modified boundary paradigm (Rayner, 1975), the Dot-Boundary paradigm, participants fixated on a suddenly-onsetting cue before the preview object would onset 4° away...
April 21, 2017: Quarterly Journal of Experimental Psychology: QJEP
https://www.readbyqxmd.com/read/28429646/rule-violations-sensitise-towards-negative-and-authority-related-stimuli
#17
Robert Wirth, Anna Foerster, Hannah Rendel, Wilfried Kunde, Roland Pfister
Rule violations have usually been studied from a third-person perspective, identifying situational factors that render violations more or less likely. A first-person perspective of the agent that actively violates the rules, on the other hand, is only just beginning to emerge. Here we show that committing a rule violation sensitises towards subsequent negative stimuli as well as subsequent authority-related stimuli. In a Prime-Probe design, we used an instructed rule-violation task as the Prime and a word categorisation task as the Probe...
April 21, 2017: Cognition & Emotion
https://www.readbyqxmd.com/read/28428766/episodic-specificity-in-acquiring-thematic-knowledge-of-novel-words-from-descriptive-episodes
#18
Meichao Zhang, Shuang Chen, Lin Wang, Xiaohong Yang, Yufang Yang
The current study examined whether thematic relations of the novel words could be acquired via descriptive episodes, and if yes, whether it could be generalized to thematically related words in a different scenario. In Experiment 1, a lexical decision task was used where the novel words served as primes for target words in four conditions: (1) corresponding concepts of the novel words, (2) thematically related words in the same episodes as that in learning condition, (3) thematically related words in different episodes, or (4) unrelated words served as targets...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28428750/applying-an-archetype-based-approach-to-electroencephalography-event-related-potential-experiments-in-the-eegbase-resource
#19
Václav Papež, Roman Mouček
PURPOSE: The purpose of this study is to investigate the feasibility of applying openEHR (an archetype-based approach for electronic health records representation) to modeling data stored in EEGBase, a portal for experimental electroencephalography/event-related potential (EEG/ERP) data management. The study evaluates re-usage of existing openEHR archetypes and proposes a set of new archetypes together with the openEHR templates covering the domain. The main goals of the study are to (i) link existing EEGBase data/metadata and openEHR archetype structures and (ii) propose a new openEHR archetype set describing the EEG/ERP domain since this set of archetypes currently does not exist in public repositories...
2017: Frontiers in Neuroinformatics
https://www.readbyqxmd.com/read/28428643/-misscare-survey-italian-version-findings-from-an-italian-validation-study
#20
Luisa Sist, Carla Contini, Anna Bandini, Stefania Bandini, Licia Massa, Roberta Zanin, Rita Maricchio, Gloria Gianesini, Erika Bassi, Daniela Tartaglini, Alvisa Palese, Annamaria Ferraresi
BACKGROUND: The Missed Nursing Care (MNC) refers to nursing interventions that are not completed, partially completed, or postponed. Despite the relevance of MNC, no assessment tools are available in the Italian context, and no data regarding the occurrence of this phenomenon has been documented on a large scale to date. OBJECTIVES: The study aims were: (1) to validate the Italian version of the MISSCARE Survey tool; (2) to measure the prevalence of missed interventions and reasons for missed care as perceived by clinical nurses working in Italian health care settings...
January 2017: Igiene e Sanità Pubblica
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