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Motivation and memory

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https://www.readbyqxmd.com/read/29336733/impaired-visuospatial-short-term-memory-in-children-with-adhd
#1
Tadamasa Narimoto, Naomi Matsuura, Michio Hiratani
Previous studies provide clear evidence that visuospatial memory performance in children with attention-deficit/hyperactivity disorder (ADHD) is significantly lower than in typically developing children. In the present study, we investigated a major cause of their low performance using a spatial span test. Possibly, inattention resulting from lack of motivation or interest causes their low performance so that they do not correctly encode targets to be remembered. On the other hand, a deficit in temporary maintenance per se may cause their low performance; that is, their inefficient use of rehearsal during a retention interval may lead to memory traces' fast decay...
January 16, 2018: Journal of Genetic Psychology
https://www.readbyqxmd.com/read/29331837/spontaneous-focusing-on-numerosity-in-preschool-as-a-predictor-of-mathematical-skills-and-knowledge-in-the-fifth-grade
#2
Cristina E Nanu, Jake McMullen, Petriina Munck, Minna M Hannula-Sormunen
Previous studies in a variety of countries have shown that there are substantial individual differences in children's spontaneous focusing on numerosity (SFON), and these differences are positively related to the development of early numerical skills in preschool and primary school. A total of 74 5-year-olds participated in a 7-year follow-up study, in which we explored whether SFON measured with very small numerosities at 5 years of age predicts mathematical skills and knowledge, math motivation, and reading in fifth grade at 11 years of age...
January 11, 2018: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/29330571/impact-of-motor-task-execution-on-an-individual-s-ability-to-mirror-forearm-positions
#3
Netta Gurari, Justin M Drogos, Shawn Lopez, Julius P A Dewald
This work is motivated by our goal of determining why individuals with stroke are impaired when locating their arms in space. We assessed the ability of individuals without neurological impairments to mirror their forearms during various motor tasks so that we could identify baseline performance in an unimpaired population. Nine right-hand dominant participants without neurological impairments mirrored forearm positions bi-directionally (i.e., right forearm mirrors left forearm, vice versa) for three motor tasks (i...
January 12, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29315837/an-artificial-flexible-visual-memory-system-based-on-an-uv-motivated-memristor
#4
Shuai Chen, Zheng Lou, Di Chen, Guozhen Shen
For the mimicry of human visual memory, a prominent challenge is how to detect and store the image information by electronic devices, which demands a multifunctional integration to sense light like eyes and to memorize image information like the brain by transforming optical signals to electrical signals that can be recognized by electronic devices. Although current image sensors can perceive simple images in real time, the image information fades away when the external image stimuli are removed. The deficiency between the state-of-the-art image sensors and visual memory system inspires the logical integration of image sensors and memory devices to realize the sensing and memory process toward light information for the bionic design of human visual memory...
January 8, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29306838/socially-shared-cognition-and-consensus-in-small-groups
#5
REVIEW
John M Levine
This paper reviews recent work on socially-shared cognition in small groups. Major attention is devoted to the impact of information and preference sharing on the achievement of group consensus and the consequences of consensus (and dissensus) for the group and its members. The literature is organized in terms of the task context in which sharing occurs (i.e., group problem-solving/decision-making tasks vs. group-productivity tasks). Topics covered include information sharing in hidden-profile situations, regulation of socio-cognitive conflict, shared mental models, transactive memory systems, and group discussions involving collective action...
December 14, 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/29301874/locus-coeruleus-activity-strengthens-prioritized-memories-under-arousal
#6
David Clewett, Ringo Huang, Rico Velasco, Tae-Ho Lee, Mara Mather
Recent models posit that bursts of locus coeruleus (LC) activity amplify neural gain, such that limited attention and encoding resources focus even more on prioritized mental representations under arousal. Here, we tested this hypothesis in human males and females using functional magnetic resonance imaging (fMRI), neuromelanin MRI, and pupil dilation, a biomarker of arousal and LC activity. During scanning, participants performed a monetary incentive encoding task in which threat of punishment motivated participants to prioritize encoding of scene images over superimposed objects...
January 4, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29280617/synaptic-plasticity-in-the-nucleus-accumbens-lessons-learned-from-experience
#7
Brandon D Turner, Daniel T Kashima, Kevin M Manz, Carrie A Grueter, Brad A Grueter
Synaptic plasticity contributes to behavioral adaptations. As a key node in the reward pathway, the nucleus accumbens (NAc) is important for determining motivation-to-action outcomes. Thus, the NAc is a model system to elucidate mechanisms underlying behavioral plasticity at the synaptic level. Across animal models of motivation including addiction, depression, anxiety, and hedonic feeding, selective recruitment of neuromodulatory signals and plasticity mechanisms have been a focus of physiologists and behaviorists alike...
December 27, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29279029/beyond-leisure-the-role-of-alcohol-in-the-lives-of-nigerian-university-students
#8
Emeka W Dumbili, Blessing N Onyima
BACKGROUND: Alcohol consumption among young people in Nigeria has traditionally been constrained due to the socio-cultural belief that alcohol is for adults. In contemporary Nigeria, media reports indicate that young people drink alcohol regularly in large quantities, but empirical research on what motivates their alcohol use is lacking. OBJECTIVES: To explore the motives for consuming alcohol among male and female students at a Nigerian university. METHODS: Drawing on motivational theories of alcohol use, 31 semi-structured interviews were conducted with students (aged 19-23 years)...
December 26, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/29276477/cholinergic-modulation-of-cortical-microcircuits-is-layer-specific-evidence-from-rodent-monkey-and-human-brain
#9
REVIEW
Joshua Obermayer, Matthijs B Verhoog, Antonio Luchicchi, Huibert D Mansvelder
Acetylcholine (ACh) signaling shapes neuronal circuit development and underlies specific aspects of cognitive functions and behaviors, including attention, learning, memory and motivation. During behavior, activation of muscarinic and nicotinic acetylcholine receptors (mAChRs and nAChRs) by ACh alters the activation state of neurons, and neuronal circuits most likely process information differently with elevated levels of ACh. In several brain regions, ACh has been shown to alter synaptic strength as well. By changing the rules for synaptic plasticity, ACh can have prolonged effects on and rearrange connectivity between neurons that outlasts its presence...
2017: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/29274503/human-aging-reduces-the-neurobehavioral-influence-of-motivation-on-episodic-memory
#10
Maiya R Geddes, Aaron T Mattfeld, Carlo de Los Angeles, Anisha Keshavan, John D E Gabrieli
The neural circuitry mediating the influence of motivation on long-term declarative or episodic memory formation is delineated in young adults, but its status is unknown in healthy aging. We examined the effect of reward and punishment anticipation on intentional declarative memory formation for words using an event-related functional magnetic resonance imaging (fMRI) monetary incentive encoding task in twenty-one younger and nineteen older adults. At 24-hour memory retrieval testing, younger adults were significantly more likely to remember words associated with motivational cues than neutral cues...
December 20, 2017: NeuroImage
https://www.readbyqxmd.com/read/29251846/neurobiology-of-substance-use-in-adolescents-and-potential-therapeutic-effects-of-exercise-for-prevention-and-treatment-of-substance-use-disorders
#11
REVIEW
Nora L Nock, Sonia Minnes, Jay L Alberts
Substance use (e.g., alcohol, marijuana, opioids, cocaine., etc,) use often initiates during adolescence, a critical period of physiological and social development marked by an increase in risk-taking due, in part, to heightened motivation to obtain arousal from rewards. Substance use during adolescence has been associated with a greater risk of substance use disorders (SUD) in adulthood. Although use rates for most substances have remained relatively stable, the frequency of marijuana use and the perception that regular marijuana use is not harmful has increased in adolescents...
December 1, 2017: Birth defects research
https://www.readbyqxmd.com/read/29247674/developmental-exposure-to-low-level-ambient-ultrafine-particle-air-pollution-and-cognitive-dysfunction
#12
D A Cory-Slechta, J L Allen, K Conrad, E Marvin, M Sobolewski
Developmental exposures to ambient ultrafine particles (UFPs) can produce multiple neuropathological and neurochemical changes that might contribute to persistent alterations in cognitive-type functions. The objective of the current study was to test the hypothesis that developmental UFP exposure produced impairments in learning, memory and impulsive-like behaivors and to determine whether these were selective and thus independent of deficits in other behavioral domains such as motor activity or motivation...
December 13, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/29243529/avolition-apathy-and-white-matter-connectivity-in-schizophrenia-reduced-fractional-anisotropy-between-amygdala-and-insular-cortex
#13
Antonella Amodio, Mario Quarantelli, Armida Mucci, Anna Prinster, Andrea Soricelli, Annarita Vignapiano, Giulia Maria Giordano, Eleonora Merlotti, Alessia Nicita, Silvana Galderisi
The avolition/apathy domain of negative symptoms includes motivation- and pleasure-related impairments. In people with schizophrenia, structural and functional abnormalities were reported in key regions within the motivational reward system, including ventral-tegmental area (VTA), striatum (especially at the level of the nucleus accumbens, NAcc), orbitofrontal cortex (OFC), as well as amygdala (Amy) and insular cortex (IC). However, the association of the reported abnormalities with avoliton-apathy is still controversial...
January 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29241082/the-effect-of-n-acetylcysteine-and-working-memory-training-on-cocaine-use-craving-and-inhibition-in-regular-cocaine-users-correspondence-of-lab-assessments-and-ecological-momentary-assessment
#14
Mieke H J Schulte, Reinout W Wiers, Wouter J Boendermaker, Anna E Goudriaan, Wim van den Brink, Denise S van Deursen, Malte Friese, Emily Brede, Andrew J Waters
INTRODUCTION: Effective treatment for cocaine use disorder should dampen hypersensitive cue-induced motivational processes and/or strengthen executive control. Using a randomized, double-blind, placebo-controlled intervention, the primary aim of this study was to investigate the effect of N-Acetylcysteine (NAC) and working memory (WM)-training to reduce cocaine use and craving and to improve inhibition assessed in the laboratory and during Ecological Momentary Assessment (EMA). The second aim was to examine correspondence between laboratory and EMA data...
December 11, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/29232617/shared-reality-in-interpersonal-relationships
#15
REVIEW
Susan M Andersen, Elizabeth Przybylinski
Close relationships afford us opportunities to create and maintain meaning systems as shared perceptions of ourselves and the world. Establishing a sense of mutual understanding allows for creating and maintaining lasting social bonds, and as such, is important in human relations. In a related vein, it has long been known that knowledge of significant others in one's life is stored in memory and evoked with new persons-in the social-cognitive process of 'transference'-imbuing new encounters with significance and leading to predictable cognitive, evaluative, motivational, and behavioral consequences, as well as shifts in the self and self-regulation, depending on the particular significant other evoked...
November 24, 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/29224920/-pharmaceutical-cognitive-doping-in-students-a-chimeric-way-to-get-a-head
#16
Louise Carton, Nicolas Cabé, Olivier Ménard, Sylvie Deheul, Anne-Sylvie Caous, David Devos, Olivier Cottencin, Régis Bordet
For students, the pressing demands for memorization, top-level performance, and peer competition create an environment favorable for pharmaceutical cognitive doping behavior. We aimed to describe recent practices and the benefit / risk ratio of such behavior and to discuss the issues at stake. The prevalence of pharmaceutical cognitive doping among students has been reported from 1.3% to 33% across studies, with variations depending on country and definition of pharmaceutical cognitive doping. The therapeutic classes most frequently cited as being diverted for doping purposes are psychostimulants and nootropics (methylphenidate, modafinil, piracetam), corticosteroids, sedative drugs and beta-blockers...
November 22, 2017: Thérapie
https://www.readbyqxmd.com/read/29222566/motivation-to-address-self-reported-hearing-problems-in-adults-with-normal-hearing-thresholds
#17
Carly C M Alicea, Karen A Doherty
Purpose: The purpose of this study was to compare the motivation to change in relation to hearing problems in adults with normal hearing thresholds but who report hearing problems and that of adults with a mild-to-moderate sensorineural hearing loss. Factors related to their motivation were also assessed. Method: The motivation to change in relation to self-reported hearing problems was measured using the University of Rhode Island Change Assessment (McConnaughy, Prochaska, & Velicer, 1983)...
December 8, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/29211653/exploring-the-organization-of-semantic-memory-through-unsupervised-analysis-of-event-related-potentials
#18
Marijn van Vliet, Marc M Van Hulle, Riitta Salmelin
Modern multivariate methods have enabled the application of unsupervised techniques to analyze neurophysiological data without strict adherence to predefined experimental conditions. We demonstrate a multivariate method that leverages priming effects on the evoked potential to perform hierarchical clustering on a set of word stimuli. The current study focuses on the semantic relationships that play a key role in the organization of our mental lexicon of words and concepts. The N400 component of the event-related potential is considered a reliable neurophysiological response that is indicative of whether accessing one concept facilitates subsequent access to another (i...
December 6, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/29209183/cognitive-flexibility-training-a-large-scale-multimodal-adaptive-active-control-intervention-study-in-healthy-older-adults
#19
Jessika I V Buitenweg, Renate M van de Ven, Sam Prinssen, Jaap M J Murre, K Richard Ridderinkhof
As aging is associated with cognitive decline, particularly in the executive functions, it is essential to effectively improve cognition in older adults. Online cognitive training is currently a popular, though controversial method. Although some changes seem possible in older adults through training, far transfer, and longitudinal maintenance are rarely seen. Based on previous literature we created a unique, state-of-the-art intervention study by incorporating frequent sessions and flexible, novel, adaptive training tasks, along with an active control group...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29209065/cellular-automaton-models-for-time-correlated-random-walks-derivation-and-analysis
#20
J M Nava-Sedeño, H Hatzikirou, R Klages, A Deutsch
Many diffusion processes in nature and society were found to be anomalous, in the sense of being fundamentally different from conventional Brownian motion. An important example is the migration of biological cells, which exhibits non-trivial temporal decay of velocity autocorrelation functions. This means that the corresponding dynamics is characterized by memory effects that slowly decay in time. Motivated by this we construct non-Markovian lattice-gas cellular automata models for moving agents with memory...
December 5, 2017: Scientific Reports
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