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Implicit learning

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https://www.readbyqxmd.com/read/28808590/genesis-and-maintenance-of-attentional-biases-the-role-of-the-locus-coeruleus-noradrenaline-system
#1
REVIEW
Mana R Ehlers, Rebecca M Todd
Emotionally arousing events are typically better remembered than mundane ones, in part because emotionally relevant aspects of our environment are prioritized in attention. Such biased attentional tuning is itself the result of associative processes through which we learn affective and motivational relevance of cues. We propose that the locus coeruleus-noradrenaline (LC-NA) system plays an important role in the genesis of attentional biases through associative learning processes as well as their maintenance...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28803867/dynamics-of-eeg-functional-connectivity-during-statistical-learning
#2
Brigitta Tóth, Karolina Janacsek, Ádám Takács, Andrea Kóbor, Zsófia Zavecz, Dezso Nemeth
Statistical learning is a fundamental mechanism of the brain, which extracts and represents regularities of our environment. Statistical learning is crucial in predictive processing, and in the acquisition of perceptual, motor, cognitive, and social skills. Although previous studies have revealed competitive neurocognitive processes underlying statistical learning, the neural communication of the related brain regions (functional connectivity, FC) has not yet been investigated. The present study aimed to fill this gap by investigating FC networks that promote statistical learning in humans...
August 10, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28796861/quantity-matters-children-with-dyslexia-are-impaired-in-a-small-but-not-large-number-of-exposures-during-implicit-repeated-sequence-learning
#3
Xinjie He, Shelley Xiuli Tong
Purpose: The present study investigated the onset of statistical learning and examined whether the number of exposures to a repeated sequence influences the learning performance of children with dyslexia on a serial reaction time task. Method: Three groups of children (29 with dyslexia, 29 age-matched controls, and 30 reading level-matched controls) were administered a serial reaction time task, and their statistical learning performances after a small and a large number of exposures (40 vs...
August 10, 2017: American Journal of Speech-language Pathology
https://www.readbyqxmd.com/read/28795835/explicit-goal-driven-attention-unlike-implicitly-learned-attention-spreads-to-secondary-tasks
#4
Douglas A Addleman, Jinyi Tao, Roger W Remington, Yuhong V Jiang
To what degree does spatial attention for one task spread to all stimuli in the attended region, regardless of task relevance? Most models imply that spatial attention acts through a unitary priority map in a task-general manner. We show that implicit learning, unlike endogenous spatial cuing, can bias spatial attention within one task without biasing attention to a spatially overlapping secondary task. Participants completed a visual search task superimposed on a background containing scenes, which they were told to encode for a later memory task...
August 10, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28793239/ghosts-in-machine-learning-for-cognitive-neuroscience-moving-from-data-to-theory
#5
REVIEW
Thomas Carlson, Erin Goddard, David M Kaplan, Colin Klein, J Brendan Ritchie
The application of machine learning methods to neuroimaging data has fundamentally altered the field of cognitive neuroscience. Future progress in understanding brain function using these methods will require addressing a number of key methodological and interpretive challenges. Because these challenges often remain unseen and metaphorically "haunt" our efforts to use these methods to understand the brain, we refer to them as "ghosts". In this paper, we describe three such ghosts, situate them within a more general framework from philosophy of science, and then describe steps to address them...
August 6, 2017: NeuroImage
https://www.readbyqxmd.com/read/28767364/learning-spatial-semantic-context-with-fully-convolutional-recurrent-network-for-online-handwritten-chinese-text-recognition
#6
Zecheng Xie, Zenghui Sun, Lianwen Jin, Hao Ni, Terry Lyons
Online handwritten Chinese text recognition (OHCTR) is a challenging problem as it involves a large-scale character set, ambiguous segmentation, and variable-length input sequences. In this paper, we exploit the outstanding capability of path signature to translate online pen-tip trajectories into informative signature feature maps, successfully capturing the analytic and geometric properties of pen strokes with strong local invariance and robustness. A multi-spatial-context fully convolutional recurrent network (MC-FCRN) is proposed to exploit the multiple spatial contexts from the signature feature maps and generate a prediction sequence while completely avoiding the difficult segmentation problem...
July 28, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/28761810/cerebellar-degeneration-affects-cortico-cortical-connectivity-in-motor-learning-networks
#7
Elinor Tzvi, Christoph Zimmermann, Richard Bey, Thomas F Münte, Matthias Nitschke, Ulrike M Krämer
The cerebellum plays an important role in motor learning as part of a cortico-striato-cerebellar network. Patients with cerebellar degeneration typically show impairments in different aspects of motor learning, including implicit motor sequence learning. How cerebellar dysfunction affects interactions in this cortico-striato-cerebellar network is poorly understood. The present study investigated the effect of cerebellar degeneration on activity in causal interactions between cortical and subcortical regions involved in motor learning...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28760730/designing-serious-computer-games-for-people-with-moderate-and-advanced-dementia-interdisciplinary-theory-driven-pilot-study
#8
Chariklia Tziraki, Rakel Berenbaum, Daniel Gross, Judith Abikhzer, Boaz M Ben-David
BACKGROUND: The field of serious games for people with dementia (PwD) is mostly driven by game-design principals typically applied to games created by and for younger individuals. Little has been done developing serious games to help PwD maintain cognition and to support functionality. OBJECTIVES: We aimed to create a theory-based serious game for PwD, with input from a multi-disciplinary team familiar with aging, dementia, and gaming theory, as well as direct input from end users (the iterative process)...
July 31, 2017: JMIR Serious Games
https://www.readbyqxmd.com/read/28756681/explicit-and-implicit-motor-learning-in-children-with-unilateral-cerebral-palsy
#9
John van der Kamp, Bert Steenbergen, Rich S W Masters
OBJECTIVES: The current study aimed to investigate the capacity for explicit and implicit learning in children with unilateral cerebral palsy. PARTICIPANTS: Children with left and right unilateral cerebral palsy and typically developing children shuffled disks toward a target. DESIGN: A prism-adaptation design was implemented, consisting of pre-exposure, prism exposure, and post-exposure phases. Half of the participants were instructed about the function of the prism glasses, while the other half were not...
July 30, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28753639/self-regulation-strategy-feedback-timing-and-hemodynamic-properties-modulate-learning-in-a-simulated-fmri-neurofeedback-environment
#10
Ethan F Oblak, Jarrod A Lewis-Peacock, James S Sulzer
Direct manipulation of brain activity can be used to investigate causal brain-behavior relationships. Current noninvasive neural stimulation techniques are too coarse to manipulate behaviors that correlate with fine-grained spatial patterns recorded by fMRI. However, these activity patterns can be manipulated by having people learn to self-regulate their own recorded neural activity. This technique, known as fMRI neurofeedback, faces challenges as many participants are unable to self-regulate. The causes of this non-responder effect are not well understood due to the cost and complexity of such investigation in the MRI scanner...
July 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28750975/the-effects-of-inter-trial-interval-on-implicit-learning-of-sequential-visual-isometric-pinch-task
#11
Fahimeh Hashemirad, Paul B Fitzgerald, Maryam Zoghi, Masoumeh Hashemirad, Shapour Jaberzadeh
Sequential visual isometric pinch task (SVIPT) has been recently used as a visuomotor sequence task in clinical research. The influence of varying intervals between sequenced trials on the acquisition of implicit sequence learning is not yet determined for SVIPT. The aim of this study was to investigate the effects of inter-trial interval (ITI) on implicit motor sequence learning using SVIPT. A total of 32 healthy participants with mean age 31.3 ± 4.5 years participated in this study. Participants were randomly assigned to one of four ITI groups; (1, 2, 3 and 4 s)...
July 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28740821/validating-the-construct-of-aberrant-salience-in-schizophrenia-behavioral-evidence-for-an-automatic-process
#12
Teresa Katthagen, Felix Dammering, Norbert Kathmann, Jakob Kaminski, Henrik Walter, Andreas Heinz, Florian Schlagenhauf
Suspecting significance behind ordinary events is a common feature in psychosis and it is assumed to occur due to aberrant salience attribution. The Salience Attribution Test (SAT; Roiser et al., 2009) measures aberrant salience as a bias towards one out of two equally reinforced cue features as opposed to adaptive salience towards features indicating high reinforcement. This is the first study to validate the latent constructs involved in salience attribution in patients. Forty-nine schizophrenia patients and forty-four healthy individuals completed the SAT, a novel implicit salience paradigm (ISP), a reversal learning task and a neuropsychological test battery...
December 2016: Schizophrenia Research. Cognition
https://www.readbyqxmd.com/read/28734549/habitual-versus-goal-driven-attention
#13
REVIEW
Yuhong V Jiang
Recent research has expanded the list of factors that control spatial attention. Beside current goals and perceptual salience, statistical learning, reward, motivation and emotion also affect attention. But do these various factors influence spatial attention in the same manner, as suggested by the integrated framework of attention, or do they target different aspects of spatial attention? Here I present evidence that the control of attention may be implemented in two ways. Whereas current goals typically modulate where in space attention is prioritized, search habits affect how one moves attention in space...
July 4, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28733248/pupil-dilations-induced-by-barely-conscious-reward-goal-priming
#14
Yudai Takarada, Daichi Nozaki
The topic of unconscious influences on behavior has long been explored as a way of understanding human performance and the neurobiological correlates of intention, motivation and action. Previous research using transcranial magnetic stimulation has demonstrated that barely visible priming of an action concept, when combined with reward in the form of a consciously perceived positive stimulus, can alter the state of the motor system and enhance the maximal voluntary force level. One possible explanation is that positive stimulus-induced reward signals are processed by the dopaminergic system in the basal ganglia, motivating individuals to increase the effort they invest in particular behaviors, or to recruit the resources necessary for maintaining those behaviors...
July 18, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28728547/community-based-initiatives-improving-critical-health-literacy-a-systematic-review-and-meta-synthesis-of-qualitative-evidence
#15
Liesbeth de Wit, Christine Fenenga, Cinzia Giammarchi, Lucia di Furia, Inge Hutter, Andrea de Winter, Louise Meijering
BACKGROUND: Critical health literacy enables older adults to make informed health decisions and take actions for the health and wellbeing of themselves and their community, within their own social and cultural context. A community-based approach has the potential to improve the critical health literacy of older adults and their communities. However, it is not clear how such initiatives consider critical health literacy. Therefore, this study explored how community-based initiatives address the critical health literacy of older adults and their communities...
July 20, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28726438/superior-pattern-detectors-efficiently-learn-activate-apply-and-update-social-stereotypes
#16
David J Lick, Adam L Alter, Jonathan B Freeman
Superior cognitive abilities are generally associated with positive outcomes such as academic achievement and social mobility. Here, we explore the darker side of cognitive ability, highlighting robust links between pattern detection and stereotyping. Across 6 studies, we find that superior pattern detectors efficiently learn and use stereotypes about social groups. This pattern holds across explicit (Studies 1 and 2), implicit (Studies 2 and 4), and behavioral measures of stereotyping (Study 3). We also find that superior pattern detectors readily update their stereotypes when confronted with new information (Study 5), making them particularly susceptible to counterstereotype training (Study 6)...
July 20, 2017: Journal of Experimental Psychology. General
https://www.readbyqxmd.com/read/28720087/resident-perceptions-of-the-impact-of-duty-hour-restrictions-on-resident-attending-interactions-an-exploratory-study
#17
Kristen A Gerjevic, Marcy E Rosenbaum, Manish Suneja
BACKGROUND: The institution of duty hour reforms by the Accreditation Council for Graduate Medical Education in 2003 has created a learning environment where residents are consistently looking for input from attending physicians with regards to balancing duty hour regulations and providing quality patient care. There is a paucity of literature regarding resident perceptions of attending physician actions or attitudes towards work hour restrictions. The purpose of this study was to identify attending physician behaviors that residents perceived as supportive or unsupportive of their compliance with duty hour regulations...
July 18, 2017: BMC Medical Education
https://www.readbyqxmd.com/read/28719661/minimizing-endpoint-variability-through-reinforcement-learning-during-reaching-movements-involving-shoulder-elbow-and-wrist
#18
David Marc Anton Mehler, Alexandra Reichenbach, Julius Klein, Jörn Diedrichsen
Reaching movements are comprised of the coordinated action across multiple joints. The human skeleton is redundant for this task because different joint configurations can lead to the same endpoint in space. How do people learn to use combinations of joints that maximize success in goal-directed motor tasks? To answer this question, we used a 3-degree-of-freedom manipulandum to measure shoulder, elbow and wrist joint movements during reaching in a plane. We tested whether a shift in the relative contribution of the wrist and elbow joints to a reaching movement could be learned by an implicit reinforcement regime...
2017: PloS One
https://www.readbyqxmd.com/read/28715694/associative-cueing-of-attention-through-implicit-feature-location-binding
#19
Giovanna Girardi, Daniele Nico
In order to assess associative learning between two task-irrelevant features in cueing spatial attention, we devised a task in which participants have to make an identity comparison between two sequential visual stimuli. Unbeknownst to them, location of the second stimulus could be predicted by the colour of the first or a concurrent sound. Albeit unnecessary to perform the identity-matching judgment the predictive features thus provided an arbitrary association favouring the spatial anticipation of the second stimulus...
September 2017: Acta Psychologica
https://www.readbyqxmd.com/read/28713303/investigating-thematic-roles-through-implicit-learning-evidence-from-light-verb-constructions
#20
Eva Wittenberg, Manizeh Khan, Jesse Snedeker
The syntactic structure of a sentence is usually a strong predictor of its meaning: Each argument noun phrase (i.e., Subject and Object) should map onto exactly one thematic role (i.e., Agent and Patient, respectively). Some constructions, however, are exceptions to this pattern. This paper investigates how the syntactic structure of an utterance contributes to its construal, using ditransitive English light verb constructions, such as "Nils gave a hug to his brother," as an example of such mismatches: Hugging is a two-role event, but the ditransitive syntactic structure suggests a three-role event...
2017: Frontiers in Psychology
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