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https://www.readbyqxmd.com/read/28335558/modeling-the-development-of-audiovisual-cue-integration-in-speech-perception
#1
Laura M Getz, Elke R Nordeen, Sarah C Vrabic, Joseph C Toscano
Adult speech perception is generally enhanced when information is provided from multiple modalities. In contrast, infants do not appear to benefit from combining auditory and visual speech information early in development. This is true despite the fact that both modalities are important to speech comprehension even at early stages of language acquisition. How then do listeners learn how to process auditory and visual information as part of a unified signal? In the auditory domain, statistical learning processes provide an excellent mechanism for acquiring phonological categories...
March 21, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28334644/low-level-inorganic-arsenic-exposure-and-neuropsychological-functioning-in-american-indian-elders
#2
Clint R Carroll, Carolyn Noonan, Eva M Garroutte, Ana Navas-Acien, Steven P Verney, Dedra Buchwald
BACKGROUND: Inorganic arsenic at high and prolonged doses is highly neurotoxic. Few studies have evaluated whether long-term, low-level arsenic exposure is associated with neuropsychological functioning in adults. OBJECTIVES: To investigate the association between long-term, low-level inorganic arsenic exposure and neuropsychological functioning among American Indians aged 64-95. METHODS: We assessed 928 participants in the Strong Heart Study by using data on arsenic species in urine samples collected at baseline (1989-1991) and results of standardized tests of global cognition, executive functioning, verbal learning and memory, fine motor functioning, and speed of mental processing administered during comprehensive follow-up evaluations in 2009-2013...
March 18, 2017: Environmental Research
https://www.readbyqxmd.com/read/28334475/the-influence-of-role-models-in-undergraduate-nurse-education
#3
Kirsten Jack, Claire Hamshire, Alison Chambers
AIMS AND OBJECTIVES: To explore the concept of role modelling in undergraduate nurse education and its effect on the personal and professional development of student nurses. BACKGROUND: Effective educative strategies are important for student nurses, who have to cope with learning in both clinical and university settings. Given the contemporary issues facing nurse education and practice in the United Kingdom (UK) it is timely and important to undertake pedagogical research into the concept of role modelling as an effective educative method...
March 23, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28334345/effects-of-age-and-gender-on-recall-and-recognition-discriminability
#4
Lisa V Graves, Charles C Moreno, Michelle Seewald, Heather M Holden, Emily J Van Etten, Vedang Uttarwar, Carrie R McDonald, Lisa Delano-Wood, Mark W Bondi, Steven Paul Woods, Dean C Delis, Paul E Gilbert
Objective: Recall and recognition memory abilities are known to decline with increasing age, yet much of the evidence stems from studies that used simple measures of total target recall or recognition. The California Verbal Learning Test-Second Edition (CVLT-II) includes a new measure of recall discriminability that is analogous to recognition discriminability. These discriminability measures yield more thorough assessments of recall and recognition by accounting for intrusion and false positive errors, respectively...
March 17, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28334281/blocking-c-fos-expression-reveals-the-role-of-auditory-cortex-plasticity-in-sound-frequency-discrimination-learning
#5
Livia de Hoz, Dorota Gierej, Victoria Lioudyno, Jacek Jaworski, Magda Blazejczyk, Hugo Cruces-Solís, Anna Beroun, Tomasz Lebitko, Tomasz Nikolaev, Ewelina Knapska, Israel Nelken, Leszek Kaczmarek
The behavioral changes that comprise operant learning are associated with plasticity in early sensory cortices as well as with modulation of gene expression, but the connection between the behavioral, electrophysiological, and molecular changes is only partially understood. We specifically manipulated c-Fos expression, a hallmark of learning-induced synaptic plasticity, in auditory cortex of adult mice using a novel approach based on RNA interference. Locally blocking c-Fos expression caused a specific behavioral deficit in a sound discrimination task, in parallel with decreased cortical experience-dependent plasticity, without affecting baseline excitability or basic auditory processing...
March 17, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28334023/preferences-for-the-provision-of-whole-genome-sequencing-services-among-young-adults
#6
Christopher H Wade, Kailyn R Elliott
OBJECTIVES: As whole genome sequencing (WGS) becomes increasingly available, clinicians will be faced with conveying complex information to individuals at different stages in life. The purpose of this study is to characterize the views of young adults toward obtaining WGS, learning different types of genomic information, and having choice about which results are disclosed. METHODS: A mixed-methods descriptive study was conducted with a diverse group of 18 and 19-years-olds (N = 145)...
2017: PloS One
https://www.readbyqxmd.com/read/28329840/a-multi-faceted-approach-to-promote-comprehension-of-online-health-information-among-older-adults
#7
Jessie Chin, Darcie D Moeller, Jessica Johnson, Elise A G Duwe, James F Graumlich, Michael D Murray, Daniel G Morrow
Purpose of the Study: Older adults' self-care often depends on understanding and utilizing health information. Inadequate health literacy among older adults poses a barrier to self-care because it hampers comprehension of this information, particularly when the information is not well-designed. Our goal was to improve comprehension of online health information among older adults with hypertension who varied in health literacy abilities. Design and Methods: We identified passages about hypertension self-care from credible websites (typical passages)...
March 10, 2017: Gerontologist
https://www.readbyqxmd.com/read/28329381/the-effects-of-an-afternoon-nap-on-episodic-memory-in-young-and-older-adults-napping-and-aging
#8
Michael K Scullin, Jacqueline Fairley, Michael J Decker, Donald L Bliwise
Study Objectives: In young adults, napping is hypothesized to benefit episodic memory retention (e.g., via consolidation). Whether this relationship is present in older adults has not been adequately tested, but is an important question because older adults display marked changes in sleep and memory. Design: Between-subjects design. Setting: Sleep laboratory at Emory University School of Medicine. Participants: 50 healthy young adults (18-29) and 45 community dwelling older adults (58-83)...
March 1, 2017: Sleep
https://www.readbyqxmd.com/read/28329000/trajectory-formation-principles-are-the-same-after-mild-or-moderate-stroke
#9
Denis Mottet, Liesjet Elisabeth Henriette van Dokkum, Jérôme Froger, Abdelkader Gouaïch, Isabelle Laffont
When we make rapid reaching movements, we have to trade speed for accuracy. To do so, the trajectory of our hand is the result of an optimal balance between feed-forward and feed-back control in the face of signal-dependant noise in the sensorimotor system. How far do these principles of trajectory formation still apply after a stroke, for persons with mild to moderate sensorimotor deficits who recovered some reaching ability? Here, we examine the accuracy of fast hand reaching movements with a focus on the information capacity of the sensorimotor system and its relation to trajectory formation in young adults, in persons who had a stroke and in age-matched control participants...
2017: PloS One
https://www.readbyqxmd.com/read/28328738/inhibition-of-hippocampal-long-term-potentiation-by-high-fat-diets-is-it-related-to-an-effect-of-palmitic-acid-involving-glycogen-synthase-kinase-3
#10
Ana Contreras, Danila Del Rio, Ana Martínez, Carmen Gil, Lidia Morales, Mariano Ruiz-Gayo, Nuria Del Olmo
High-fat diets (HFD) impair hippocampal-dependent learning and memory and produce important changes in synaptic transmission by enhancing glutamate uptake, decreasing synaptic efficacy, and inhibiting plasticity mechanisms such as N-methyl-D-aspartate-mediated long-term depression (LTD) within the hippocampus. Adolescent animals seem to be particularly susceptible to the detrimental effect of HFD as dietary treatments carried out between weaning and early adulthood are much more efficient in terms of hippocampal damage that those carried out during the adult period...
March 21, 2017: Neuroreport
https://www.readbyqxmd.com/read/28326989/perception-of-nonnative-accented-sentences-by-5-to-8-year-olds-and-adults-the-role-of-phonological-processing-skills
#11
Tessa Bent, Eriko Atagi
To acquire language and successfully communicate in multicultural and multilingual societies, children must learn to understand speakers with various accents and dialects. This study investigated adults' and 5- to 8-year-old children's perception of native- and nonnative-accented English sentences in noise. Participants' phonological memory and phonological awareness were assessed to investigate factors associated with individual differences in word recognition. Although both adults and children performed less accurately with nonnative talkers than native talkers, children showed greater performance decrements...
March 2017: Language and Speech
https://www.readbyqxmd.com/read/28326010/impact-of-resveratrol-on-glucose-control-hippocampal-structure-and-connectivity-and-memory-performance-in-patients-with-mild-cognitive-impairment
#12
Theresa Köbe, A Veronica Witte, Ariane Schnelle, Valentina A Tesky, Johannes Pantel, Jan-Philipp Schuchardt, Andreas Hahn, Jens Bohlken, Ulrike Grittner, Agnes Flöel
In healthy older adults, resveratrol supplementation has been shown to improve long-term glucose control, resting-state functional connectivity (RSFC) of the hippocampus, and memory function. Here, we aimed to investigate if these beneficial effects extend to individuals at high-risk for dementia, i.e., patients with mild cognitive impairment (MCI). In a randomized, double-blind interventional study, 40 well-characterized patients with MCI (21 females; 50-80 years) completed 26 weeks of resveratrol (200 mg/d; n = 18) or placebo (1,015 mg/d olive oil; n = 22) intake...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28325118/is-asthma-associated-with-cognitive-impairments-a-meta-analytic-review
#13
Farzin Irani, Jordan Mark Barbone, Janet Beausoleil, Lynn Gerald
INTRODUCTION: Asthma is a chronic disease with significant health burden and socioeconomic and racial/ethnic disparities related to diagnosis and treatment. Asthma primarily affects the lungs, but can impact brain function through direct and indirect mechanisms. Some studies have suggested that asthma negatively impacts cognition, while others have failed to identify asthma-related cognitive compromise. We aimed to conduct a meta-analysis of cognition in individuals with asthma compared to that in healthy controls...
March 21, 2017: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/28323549/feasibility-of-an-electronic-participant-information-system-for-adult-day-services-a-qualitative-study-of-staff-perspectives
#14
Yujun Liu, Christina Voskanova Tyhurst, Shannon E Jarrott
Adult day services (ADS) professionals have begun to explore assessment systems focused on participants. Barriers include inadequate technology, software costs, and personnel requirements. We present data from staff interviews at an ADS with an electronic participant information system. Contrary to reports about difficulties learning to use electronic systems, staff found the system manageable and data meaningful. We identify ways that community-based centers can build partnerships and utilize software to integrate assessment and electronic records to improve center performance and participant outcomes...
February 7, 2017: Home Health Care Services Quarterly
https://www.readbyqxmd.com/read/28323539/guns-in-the-home-and-the-possibility-of-aggressive-tendencies-exploring-a-community-sample-of-adolescents-in-low-income-communities
#15
Brad Lian, Beatrice Abiero, Paula Kamara
Firearm violence has been the second leading cause of death among adolescents and young adults in the United States since 2000 and is a major public health concern. But firearms may be related to less lethal forms of violence as well. Here we examine the relationship between the presence of a gun in the home and several behavioral and psychosocial measures related to aggression and violence among adolescents using data from a community-based survey of nearly 2,000 youths living in low-income neighborhoods. Our results indicate that adolescents living in homes where a gun is present display more aggressive attitudes and behaviors than their counterparts living in homes with no gun present...
March 21, 2017: Social Work in Public Health
https://www.readbyqxmd.com/read/28322620/the-effect-of-wheelchair-propulsion-style-on-changes-in-time-spent-in-extreme-wrist-orientations-after-a-bout-of-fatiguing-propulsion
#16
Lisa A Zukowski, Chris J Hass, Orit Shechtman, Evangelos A Christou, Mark D Tillman
This study compared how wheelchair propulsion styles affect changes in percentage of time spent in extreme wrist orientations, which have been associated with median nerve injury, after a fatiguing bout of propulsion. Twenty novice, non-disabled adult males learned arcing (ARC) and semicircular (SEMI) propulsion styles and utilised each to perform a wheelchair fatigue protocol. ARC and SEMI did not significantly differ in terms of changes after the fatigue protocol in percentage of time spent in extreme flexion/extension or radial/ulnar deviation at the push phase beginning or end...
March 21, 2017: Ergonomics
https://www.readbyqxmd.com/read/28322126/prenatal-exposure-to-nanosized-zinc-oxide-in-rats-neurotoxicity-and-postnatal-impaired-learning-and-memory-ability
#17
Feng Xiaoli, Wu Junrong, Lai Xuan, Zhang Yanli, Wei Limin, Liu Jia, Shao Longquan
AIM: To examine the neurotoxicity of prenatal exposure to ZnO nanoparticles on rat offspring. MATERIALS & METHODS: Pregnant Sprague-Dawley rats were exposed to ZnO nanoparticles (NPs) by gavage. Toxicity was assessed including zinc biodistribution, cerebral histopathology, antioxidant status and learning and memory capability. RESULTS: A significantly elevated concentration of zinc was detected in offspring brains. Transmission electron microscope observations showed abnormal neuron ultrastructures...
March 21, 2017: Nanomedicine
https://www.readbyqxmd.com/read/28321393/an-integrated-approach-to-falls-prevention-a-model-for-linking-clinical-and-community-interventions-through-the-massachusetts-prevention-and-wellness-trust-fund
#18
Laura J Coe, Julie Ann St John, Santhi Hariprasad, Kalpana N Shankar, Patricia A MacCulloch, Amy L Bettano, Jean Zotter
Older adult falls continue to be a public health priority across the United States-Massachusetts (MA) being no exception. The MA Prevention and Wellness Trust Fund (PWTF) program within the MA Department of Public Health aims to reduce the physical and economic burdens of chronic health conditions by linking evidence-based clinical care with community intervention programs. The PWTF partnerships that focused on older adult falls prevention integrated the Centers for Disease Control and Prevention's Stopping Elderly Accidents, Death and Injuries toolkit into clinical settings...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/28321188/explicit-action-switching-interferes-with-the-context-specificity-of-motor-memories-in-older-adults
#19
Carly J Sombric, Harrison M Harker, Patrick J Sparto, Gelsy Torres-Oviedo
Healthy aging impairs the ability to adapt movements to novel situations and to switch choices according to the context in cognitive tasks, indicating resistance to changes in motor and cognitive behaviors. Here we examined if this lack of "flexibility" in old subjects observed in motor and cognitive domains were related. To this end, we evaluated subjects' performance in a motor task that required switching walking patterns and its relation to performance in a cognitive switching task. Specifically, a group of old (>73 years old) and young subjects learned a new locomotor pattern on a split-belt treadmill, which drives the legs at different speeds...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28321185/sex-matters-hippocampal-volume-predicts-individual-differences-in-associative-memory-in-cognitively-normal-older-women-but-not-men
#20
Zhiwei Zheng, Rui Li, Fengqiu Xiao, Rongqiao He, Shouzi Zhang, Juan Li
The hippocampus plays a prominent role in associative memory by supporting relational binding and recollection processes. Structural atrophy in the hippocampus is likely to induce associative memory deficits in older adults. Previous studies have primarily focused on average age-related differences in hippocampal structure and memory performance. To date, however, it remains unclear whether individual differences in hippocampal morphometry underlie differential associative memory performance, and whether there are sex differences in the structural correlates of associative memory in healthy older adults...
2017: Frontiers in Human Neuroscience
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