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https://www.readbyqxmd.com/read/28712912/multixplore-visual-exploration-platform-for-multimodal-neuroimaging-data
#1
Saeed M Bakhshmand, Ali R Khan, Sandrine de Ribaupierre, Roy Eagleson
BACKGROUND: Construction of brain functional and structural networks by neuroimaging methods facilitates inter-modal studies. These type of studies often demand exploration tools to carry out functional-structural discoveries and answer questions regarding the anatomical basis of brain networks. NEW METHOD: This paper describes the design and development of a software module for interactive visualization and exploration of dual-modal brain networks. Our objective was to equip the user with a research tool to investigate brain connectivity matrices while visualizing relevant anatomical landmarks within a 3D volumetric view...
July 13, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28704206/an-autonomous-robot-inspired-by-insect-neurophysiology-pursues-moving-features-in-natural-environments
#2
Zahra M Bagheri, Benjamin S Cazzolato, Steven Grainger, David C O'Carroll, Steven D Wiederman
OBJECTIVE: Many computer vision and robotic applications require the implementation of robust and efficient target-tracking algorithms on a moving platform. However, deployment of a real-time system is challenging, even with the computational power of modern hardware. Lightweight and low-powered flying insects, such as dragonflies, track prey or conspecifics within cluttered natural environments, illustrating an efficient biological solution to the target-tracking problem. APPROACH: We used our recent recordings from 'small target motion detector' neurons in the dragonfly brain to inspire the development of a closed-loop target detection and tracking algorithm...
July 13, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28701963/hoarding-disorder-a-case-report
#3
Daniela Vilaverde, Jorge Gonçalves, Pedro Morgado
Hoarding disorder is characterized by a persistent difficulty discarding items, the desire to save items to avoid negative feelings associated with discarding them, significant accumulation of possessions that clutter active living areas and significant distress or impairment in areas of functioning. We present a case of a 52-year-old married man who was referred to the psychiatry department for collecting various objects that were deposited unorganized in the patient's house. He reported to get anxious when someone else discarded some of these items...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28700367/open-adoption-placement-by-birth-mothers-in-their-twenties
#4
Lynn B Clutter
PURPOSE: The purpose of this study was to summarize birth mothers' descriptions of unplanned pregnancy experienced in their twenties and how open adoption influenced their lives. STUDY DESIGN AND METHODS: Naturalistic inquiry was used with purposive sampling from one agency and telephone interviews of women who experienced unplanned pregnancy in their twenties and relinquishment through open adoption. Recorded, transcribed, and deidentified interviews were analyzed for qualitative themes...
July 11, 2017: MCN. the American Journal of Maternal Child Nursing
https://www.readbyqxmd.com/read/28694337/targeted-memory-reactivation-during-sleep-adaptively-promotes-the-strengthening-or-weakening-of-overlapping-memories
#5
J P Oyarzún, J Morís, D Luque, R de Diego-Balaguer, L Fuentemilla
System memory consolidation is conceptualized as an active process whereby newly encoded memory representations are strengthened through selective memory reactivation during sleep. However, our learning experience is highly overlapping in content (i.e., shares common elements), and memories of these events are organized in an intricate network of overlapping associated events. It remains to be explored whether and how selective memory reactivation during sleep has an impact on these overlapping memories acquired during awake time...
July 10, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28686560/-hoarding-disorder-in-dsm-5-clinical-description-and-cognitive-approach
#6
L Kalogeraki, I Michopoulos
Hoarding disorder is characterized by difficulty discarding or parting with possessions regardless their actual value as well as, in most cases, persistent acquisition of objects. Possessions are accumulated in large numbers that fill up and clutter active living space to the extent that its intended use is no longer possible resulting to significant functional impairment and/or distress. Saving and difficulty discarding appear to be associated to subjective beliefs about the instrumental, sentimental or intrinsic value of objects...
April 2017: Psychiatrikē, Psychiatriki
https://www.readbyqxmd.com/read/28686198/towards-a-cognitive-radar-canada-s-third-generation-high-frequency-surface-wave-radar-hfswr-for-surveillance-of-the-200-nautical-mile-exclusive-economic-zone
#7
Anthony Ponsford, Rick McKerracher, Zhen Ding, Peter Moo, Derek Yee
Canada's third-generation HFSWR forms the foundation of a maritime domain awareness system that provides enforcement agencies with real-time persistent surveillance out to and beyond the 200 nautical mile exclusive economic zone (EEZ). Cognitive sense-and-adapt technology and dynamic spectrum management ensures robust and resilient operation in the highly congested High Frequency (HF) band. Dynamic spectrum access enables the system to simultaneously operate on two frequencies on a non-interference and non-protected basis, without impacting other spectrum users...
July 7, 2017: Sensors
https://www.readbyqxmd.com/read/28679795/species-specific-differences-in-the-fine-structure-of-learning-walk-elements-in-cataglyphis-ants
#8
Pauline N Fleischmann, Robin Grob, Rüdiger Wehner, Wolfgang Rössler
Cataglyphis desert ants are famous navigators. Like all central place foragers, they are confronted with the challenge to return home, i.e. relocate an inconspicuous nest entrance in the ground, after their extensive foraging trips. When leaving the underground nest for the first time, desert ants perform a striking behavior, so-called learning walks that are well structured. However, it is still unclear how the ants initially acquire the information needed for sky- and landmark-based navigation, in particular how they calibrate their compass system at the beginning of their foraging careers...
July 1, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28666563/abdominal-parametric-perfusion-imaging-with-respiratory-motion-compensation-based-on-contrast-enhanced-ultrasound-in-vivo-validation
#9
Diya Wang, Mengnan Xiao, Yu Zhang, Mingxi Wan
Parametric perfusion imaging (PPI) based on dynamic contrast-enhanced ultrasound (DCEUS) is a multi-parametric functional method that is increasingly used to characterize the hemodynamic features of abdominal tumors. Periodic respiratory kinetics adversely affects the signal-to-clutter ratio (SCR) and accuracy of abdominal PPI. This study proposed respiratory motion-compensation (rMoCo) employing non-negative matrix factorization combined with fast block matching algorithm to effectively remove these disturbances on abdominal PPI, which was validated through in-vivo perfusion experiments...
June 22, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28666359/cognition-in-context-the-role-of-objective-and-subjective-measures-of-neighborhood-and-household-in-cognitive-functioning-in-later-life
#10
Haena Lee, Linda J Waite
Background and Objectives: Although the role of place on health is not new, less is known about how place matters for cognition. By investigating both neighborhood and home as the sociospatial realms of older adults, we explore associations between health and place across multiple contexts. We also distinguish objective and subjective measures of place and disentangle their differential associations with cognition. Research Design and Methods: We analyzed place effects on cognition from the National Social Life, Health, and Aging Project (N = 2,260) linked to neighborhood characteristics and crime data...
June 28, 2017: Gerontologist
https://www.readbyqxmd.com/read/28660777/diogenes-syndrome-in-frontotemporal-dementia
#11
Catherine M Finney, Mario F Mendez
Diogenes syndrome refers to the combination of extreme self-neglect and excessive collecting with clutter and squalor, which is often present in patients with dementia. Diogenes syndrome may be particularly common in behavioral variant frontotemporal dementia (bvFTD), and the investigation of these patients may help clarify the nature of this syndrome. We describe 5 patients with bvFTD who exhibited a decline in self-care accompanied by hoarding behaviors. These patients, and a review of the literature, suggest a combination of frontal lobe disturbances: loss of insight or self-awareness with a failure to clean up or discard, a general compulsive drive, and an innate impulse to take environmental items...
January 1, 2017: American Journal of Alzheimer's Disease and Other Dementias
https://www.readbyqxmd.com/read/28655645/optic-flow-based-collision-free-strategies-from-insects-to-robots
#12
Julien Serres, Franck Ruffier
Flying insects are able to fly smartly in an unpredictable environment. It has been found that flying insects have smart neurons inside their tiny brains that are sensitive to visual motion also called optic flow. Consequently, flying insects rely mainly on visual motion during their flight maneuvers such as: takeoff or landing, terrain following, tunnel crossing, lateral and frontal obstacle avoidance, and adjusting flight speed in a cluttered environment. Optic flow can be defined as the vector field of the apparent motion of objects, surfaces, and edges in a visual scene generated by the relative motion between an observer (an eye or a camera) and the scene...
June 24, 2017: Arthropod Structure & Development
https://www.readbyqxmd.com/read/28655373/the-pathogenesis-assessment-and-treatment-of-speech-fluency-disorders
#13
Katrin Neumann, Harald A Euler, Hans-Georg Bosshardt, Susanne Cook, Patricia Sandrieser, Martin Sommer
BACKGROUND: Approximately 1% of children and adolescents, 0.2% of women, and 0.8% of men suffer from stuttering, and lesser numbers from cluttering. Persistent speech fluency disorders often cause lifelong problems in communication and social participation. METHODS: In an interdisciplinary, evidence and consensus based clinical practice guideline, the current understanding of the nature, identification, diagnosis, and treatment of stuttering and cluttering was summarized...
June 5, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/28650810/expanding-acquisition-and-clutter-filter-dimensions-for-improved-perfusion-sensitivity
#14
Min Woo Kim, Craig K Abbey, Jamila Hedhli, Lawrence W Dobrucki, Michael F Insana
A method is explored for increasing the sensitivity of power-Doppler imaging without contrast enhancement. We acquire 1-10 s of echo signals and arrange it into a 3-D spatiotemporal data array. An eigenfilter developed to preserve all three dimensions of the array yields power estimates for blood flow and perfusion that are well separated from tissue clutter. This method is applied at high frequency (24 MHz pulses) to a murine model of an ischemic hindlimb. We demonstrate enhancements to tissue perfusion maps in normal and ischemic tissues...
June 26, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28648919/myocardial-strain-rate-by-anatomic-doppler-spectrum-first-clinical-experience-using-retrospective-spectral-tissue-doppler-from-ultra-high-frame-rate-imaging
#15
Lars Christian Naterstad Lervik, Birger Brekke, Svein Arne Aase, Mai Tone Lønnebakken, Dordi Stensvåg, Brage H Amundsen, Hans Torp, Asbjorn Støylen
Strain rate imaging by tissue Doppler (TDI) is vulnerable to stationary reverberations and noise (clutter). Anatomic Doppler spectrum (ADS) presents retrospective spectral Doppler from ultra-high frame rate imaging (UFR-TDI) data for a region of interest, that is, ventricular wall or segment, at one time instance. This enables spectral assessment of strain rate (SR) without the influence of clutter. In this study, we assessed SR with ADS and conventional TDI in 20 patients with a recent myocardial infarction and 10 healthy volunteers...
June 22, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28632043/simultanagnosia-and-object-individuation
#16
Veronica Mazza
Simultanagnosic patients have difficulty in perceiving multiple objects when presented simultaneously. In this review article, I discuss how neuropsychological research on simultanagnosia has been inspirational for two interconnected lines of research related to the core mechanisms by which the visual system processes cluttered scenes. First, I review previous studies on enumeration tasks indicating that, despite their inability to identify multiple objects, simultanagnosic patients can enumerate up to 2-3 elements as efficiently as healthy individuals (the so-called "subitizing" phenomenon)...
June 6, 2017: Cognitive Neuropsychology
https://www.readbyqxmd.com/read/28622670/adaptive-clutter-demodulation-for-non-contrast-ultrasound-perfusion-imaging
#17
Jaime Tierney, Crystal Coolbaugh, Theodore Towse, Brett Byram
Conventional Doppler ultrasound is useful for visualizing fast blood flow in large resolvable vessels. However, frame rate and tissue clutter caused by movement of the patient or sonographer make visualizing slow flow with ultrasound difficult. Patient and sonographer motion causes spectral broadening of the clutter signal, which limits ultrasound's sensitivity to velocities greater than 5-10mm/s for typical clinical imaging frequencies. To address this, we propose a clutter filtering technique that may increase the sensitivity of Doppler measurements to at least as low as 0...
June 13, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28601822/effectiveness-of-a-workshop-on-decluttering-and-organising-programme-for-teens-and-middle-aged-adults-with-difficulty-decluttering-a-study-protocol-of-an-open-label-randomised-parallel-group-superiority-trial-in-japan
#18
Yasuko Aso, Kazue Yamaoka, Asuka Nemoto, Yuki Naganuma, Masashige Saito
INTRODUCTION: Hoarding disorder can cause problems with work performance, personal hygiene, health and well-being. The disorder is a growing social problem in Japan. Having difficulty discarding rubbish, decluttering and organising can signal a future hoarding disorder, and early intervention is important. We developed an educational workshop on decluttering and organising for teens and adults with difficulty organising. The objective of this study is to evaluate the effectiveness of a workshop for reducing clutter and improving quality of life among younger people with difficulty decluttering and organising...
June 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28587299/remote-sensing-image-change-detection-based-on-nsct-hmt-model-and-its-application
#19
Pengyun Chen, Yichen Zhang, Zhenhong Jia, Jie Yang, Nikola Kasabov
Traditional image change detection based on a non-subsampled contourlet transform always ignores the neighborhood information's relationship to the non-subsampled contourlet coefficients, and the detection results are susceptible to noise interference. To address these disadvantages, we propose a denoising method based on the non-subsampled contourlet transform domain that uses the Hidden Markov Tree model (NSCT-HMT) for change detection of remote sensing images. First, the ENVI software is used to calibrate the original remote sensing images...
June 6, 2017: Sensors
https://www.readbyqxmd.com/read/28575421/evidence-of-the-impact-of-the-truth-finishit-campaign
#20
Vallone Vallone, Cantrell Cantrell, Bennett Bennett, Smith Smith, Jessica Rath, Xiao Xiao, Greenberg Greenberg, Elizabeth C Hair
Introduction: Over the past decade, public education mass media campaigns have been shown to be successful in changing tobacco-related attitudes, intentions, and behaviors among youth and young adults. In 2014, the national truth® campaign re-launched a new phase of the campaign targeted at a broad audience of youth and young adults, aged 15-21, to help end the tobacco epidemic. Methods: The study sample for this analysis is drawn from the Truth Longitudinal Cohort (TLC), a probability-based, nationally representative cohort designed to evaluate the relationship between awareness of truth media messages and changes in targeted attitudes, beliefs, and behaviors over time...
June 2, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
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