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https://www.readbyqxmd.com/read/29775858/when-is-the-right-hemisphere-holistic-and-when-is-it-not-the-case-of-chinese-character-recognition
#1
Harry K S Chung, Jacklyn C Y Leung, Vienne M Y Wong, Janet H Hsiao
Holistic processing (HP) has long been considered a characteristic of right hemisphere (RH) processing. Indeed, holistic face processing is typically associated with left visual field (LVF)/RH processing advantages. Nevertheless, expert Chinese character recognition involves reduced HP and increased RH lateralization, presenting a counterexample. Recent modeling research suggests that RH processing may be associated with an increase or decrease in HP, depending on whether spacing or component information was used respectively...
May 15, 2018: Cognition
https://www.readbyqxmd.com/read/29774478/number-line-estimation-and-complex-mental-calculation-is-there-a-shared-cognitive-process-driving-the-two-tasks
#2
Maria Montefinese, Carlo Semenza
It is widely accepted that different number-related tasks, including solving simple addition and subtraction, may induce attentional shifts on the so-called mental number line, which represents larger numbers on the right and smaller numbers on the left. Recently, it has been shown that different number-related tasks also employ spatial attention shifts along with general cognitive processes. Here we investigated for the first time whether number line estimation and complex mental arithmetic recruit a common mechanism in healthy adults...
May 17, 2018: Cognitive Processing
https://www.readbyqxmd.com/read/29774432/cross-modal-decoupling-in-temporal-attention-between-audition-and-touch
#3
Stefanie Mühlberg, Salvador Soto-Faraco
Temporal orienting leads to well-documented behavioural benefits for sensory events occurring at the anticipated moment. However, the consequences of temporal orienting in cross-modal contexts are still unclear. On the one hand, some studies using audio-tactile paradigms suggest that attentional orienting in time and modality are a closely coupled system, in which temporal orienting dominates modality orienting, similar to what happens in cross-modal spatial attention. On the other hand, recent findings using a visuo-tactile paradigm suggest that attentional orienting in time can unfold independently in each modality, leading to cross-modal decoupling...
May 17, 2018: Psychological Research
https://www.readbyqxmd.com/read/29773985/addition-and-subtraction-but-not-multiplication-and-division-cause-shifts-of-spatial-attention
#4
Mengjin Li, Dixiu Liu, Min Li, Wenshan Dong, Yalun Huang, Qi Chen
Many studies have shown that solving addition and subtraction problems can induce overt shifts of spatial attention. In particular, right-side targets are detected faster than left-side targets when preceded by an addition operation, while left-side targets are detected faster than right-side targets when preceded by a subtraction operation. However, the interaction between space and arithmetic in multiplication or division is hardly studied and remains controversial. In order to make a strong case for the interaction between space and mental arithmetic, we attempted to replicate the spatial-arithmetic association in addition and subtraction (Experiment 1), and at the same time investigated whether shift of spatial attention would also be induced by multiplication or division operations (Experiment 2)...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29772725/attention-based-recurrent-temporal-restricted-boltzmann-machine-for-radar-high-resolution-range-profile-sequence-recognition
#5
Yifan Zhang, Xunzhang Gao, Xuan Peng, Jiaqi Ye, Xiang Li
The High Resolution Range Profile (HRRP) recognition has attracted great concern in the field of Radar Automatic Target Recognition (RATR). However, traditional HRRP recognition methods failed to model high dimensional sequential data efficiently and have a poor anti-noise ability. To deal with these problems, a novel stochastic neural network model named Attention-based Recurrent Temporal Restricted Boltzmann Machine (ARTRBM) is proposed in this paper. RTRBM is utilized to extract discriminative features and the attention mechanism is adopted to select major features...
May 16, 2018: Sensors
https://www.readbyqxmd.com/read/29771462/different-neural-activities-support-auditory-working-memory-in-musicians-and-bilinguals
#6
Claude Alain, Yasha Khatamian, Yu He, Yunjo Lee, Sylvain Moreno, Ada W S Leung, Ellen Bialystok
Musical training and bilingualism benefit executive functioning and working memory (WM)-however, the brain networks supporting this advantage are not well specified. Here, we used functional magnetic resonance imaging and the n-back task to assess WM for spatial (sound location) and nonspatial (sound category) auditory information in musician monolingual (musicians), nonmusician bilinguals (bilinguals), and nonmusician monolinguals (controls). Musicians outperformed bilinguals and controls on the nonspatial WM task...
May 17, 2018: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29770439/increase-of-frontal-neuronal-activity-in-chronic-neglect-after-training-in-virtual-reality
#7
U Ekman, H Fordell, J Eriksson, N Lenfeldt, A Wåhlin, A Eklund, J Malm
OBJECTIVES: A third of patients with stroke acquire spatial neglect associated with poor rehabilitation outcome. New effective rehabilitation interventions are needed. Scanning training combined with multisensory stimulation to enhance the rehabilitation effect is suggested. In accordance, we have designed a virtual-reality based scanning training that combines visual, audio and sensori-motor stimulation called RehAtt® . Effects were shown in behavioural tests and activity of daily living...
May 16, 2018: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/29770186/conflict-tasks-of-different-types-divergently-affect-the-attentional-processing-of-gaze-and-arrow
#8
Lingxia Fan, Huan Yu, Xuemin Zhang, Qing Feng, Mengdan Sun, Mengsi Xu
The present study explored the attentional processing mechanisms of gaze and arrow cues in two different types of conflict tasks. In Experiment 1, participants performed a flanker task in which gaze and arrow cues were presented as central targets or bilateral distractors. The congruency between the direction of the target and the distractors was manipulated. Results showed that arrow distractors greatly interfered with the attentional processing of gaze, while the processing of arrow direction was immune to conflict from gaze distractors...
May 2018: I-Perception
https://www.readbyqxmd.com/read/29768217/integrative-characterization-of-the-r6-2-mouse-model-of-huntington-s-disease-reveals-dysfunctional-astrocyte-metabolism
#9
Niels H Skotte, Jens V Andersen, Alberto Santos, Blanca I Aldana, Cecilie W Willert, Anne Nørremølle, Helle S Waagepetersen, Michael L Nielsen
Huntington's disease is a fatal neurodegenerative disease, where dysfunction and loss of striatal and cortical neurons are central to the pathogenesis of the disease. Here, we integrated quantitative studies to investigate the underlying mechanisms behind HD pathology in a systems-wide manner. To this end, we used state-of-the-art mass spectrometry to establish a spatial brain proteome from late-stage R6/2 mice and compared this with wild-type littermates. We observed altered expression of proteins in pathways related to energy metabolism, synapse function, and neurotransmitter homeostasis...
May 15, 2018: Cell Reports
https://www.readbyqxmd.com/read/29766590/automatic-change-detection-and-spatial-attention-a-visual-mismatch-negativity-study
#10
Domonkos File, István Sulykos, István Czigler
Visual mismatch negativity (vMMN) is the electrophysiological correlate of automatic detection of unattended changes in the visual environment. However, vMMNs' relatedness to spatial attention has not been explicitly tested. Thus, the aim of the study was to investigate the effects of spatial attention on the vMMN event-related potential component. To this end, participants were instructed to fixate and attend to task-related stimuli. In an oddball sequence, offset stimuli were applied, i.e., from time-to time, the two sides of permanently presented objects disappeared...
May 15, 2018: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29766586/awareness-is-related-to-reduced-post-stimulus-alpha-power-a-no-report-inattentional-blindness-study
#11
Anthony M Harris, Paul E Dux, Jason B Mattingley
Delineating the neural correlates of sensory awareness is a key requirement for developing a neuroscientific understanding of consciousness. A neural signal that has been proposed as a key neural correlate of awareness is amplitude reduction of 8-14 Hz alpha oscillations. Alpha oscillations are also closely linked to processes of spatial attention, providing potential alternative explanations for past results associating alpha oscillations with awareness. We employed a no-report inattentional blindness (IB) paradigm with electroencephalography to examine the association between awareness and the power of 8-14 Hz alpha oscillations...
May 15, 2018: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29766459/cognitive-functioning-in-chiari-malformation-type-i-without-posterior-fossa-surgery
#12
Maitane García, Esther Lázaro, Juan Francisco López-Paz, Oscar Martínez, Manuel Pérez, Sarah Berrocoso, Mohammad Al-Rashaida, Imanol Amayra
Chiari Malformation type I (CM-I) is a neurological disorder characterized by a displacement of the cerebellar tonsils through the foramen magnum into the spinal canal. Most research has focused on physical symptomatology but few studies include neuropsychological examinations. Moreover, although current research highlights the involvement of the cerebellum on higher cognitive functions, little is known about cognitive consequences associated with CM-I. The aim of this study is to analyze cognitive functioning between 39 CM-I patients and 39 healthy controls, matched by gender, age and years of education...
May 15, 2018: Cerebellum
https://www.readbyqxmd.com/read/29766295/the-impact-of-temporal-contingencies-between-cue-and-target-onset-on-spatial-attentional-capture-by-subliminal-onset-cues
#13
Tobias Schoeberl, Ulrich Ansorge
Prior research suggested that attentional capture by subliminal abrupt onset cues is stimulus driven. In these studies, reacting was faster when a searched-for target appeared at the location of a preceding abrupt onset cue compared to when the same target appeared at a location away from the cue (cueing effect), although the earlier onset of the cue was subliminal, because it appeared as one out of three horizontally aligned placeholders with a lead time that was too short to be noticed by the participants...
May 15, 2018: Psychological Research
https://www.readbyqxmd.com/read/29765585/a-study-of-the-effects-of-daily-physical-activity-on-memory-and-attention-capacities-in-college-students
#14
Dinh-Van Phan, Chien-Lung Chan, Ren-Hao Pan, Nan-Ping Yang, Hsiu-Chen Hsu, Hsien-Wei Ting, K Robert Lai
This study evaluated the relationship between daily physical activity (DPA) and memory capacity, as well as the association between daily activity and attention capacity, in college students in Taiwan. Participants (mean age = 20.79) wore wearable trackers for 106 days in order to collect DPA. These data were analyzed in association with their memory and attention capacities, as assessed using the spatial span test (SST) and the trail making test (TMT). The study showed significant negative correlations between memory capacity, time spent on the attention test (TSAT), calories burnt, and very active time duration (VATD) on the day before testing ( r = -0...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29765144/mind-wandering-and-task-focused-attention-erp-correlates
#15
Óscar F Gonçalves, Gabriel Rêgo, Tatiana Conde, Jorge Leite, Sandra Carvalho, Olívia Morgan Lapenta, Paulo S Boggio
Previous studies looking at how Mind Wandering (MW) impacts performance in distinct Focused Attention (FA) systems, using the Attention Network Task (ANT), showed that the presence of pure MW thoughts did not impact the overall performance of ANT (alert, orienting and conflict) performance. However, it still remains unclear if the lack of interference of MW in the ANT, reported at the behavioral level, has a neurophysiological correspondence. We hypothesize that a distinct cortical processing may be required to meet attentional demands during MW...
May 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29763788/hiv-as-social-and-ecological-experience
#16
Brian King, Margaret S Winchester
The spread and varied impacts of the HIV/AIDS epidemic demonstrate the complex and reciprocal relationships between the socio-political and biophysical dimensions of human health. Yet even with increasing research and policy attention there remain critical gaps in the literature on how HIV-positive households manage health through their engagement with social and ecological systems. This is particularly urgent given improvements in the global response to the epidemic, whereby expanded access to antiretroviral therapy has extended the possibility for survival for years or decades...
April 16, 2018: Social Science & Medicine
https://www.readbyqxmd.com/read/29763770/the-development-of-object-based-attention-in-infants
#17
Shuma Tsurumi, So Kanazawa, Masami K Yamaguchi
We examined whether infants aged 6-8 months show object-based attention using the preferential looking method. In object-based attention, which is a prerequisite function for efficient real-world processing of various stimuli, a target that appears at a cued object is detected and processed faster than a target appearing at an uncued object. We presented 6- to 8-month-old infants with the visual stimuli consisting of two white vertical rectangles side by side, in which a target appearing at 1) the cued location, 2) the end opposite to the cued location, and 3) another rectangle's end following the cue, using an established paradigm, and measured each infant's first saccade to the target...
May 11, 2018: Infant Behavior & Development
https://www.readbyqxmd.com/read/29763697/the-effect-of-load-on-spatial-attention-depends-on-preview-evidence-from-a-readingstudy
#18
Saeideh Ghahghaei, Karina J Linnell
The spatio-temporal distribution of covert attention has usually been studied under unfamiliar tasks with static viewing. It is important to extend this work to familiar tasks such as reading where sequential eye movements are made. Our previous work with reading showed that covert spatial attention around the gaze location is affected by the fixated word frequency, or the processing load exerted by the word, as early as 40 ms into the fixation. Here, we hypothesised that this early effect of frequency is only possible when the word is previewed and thus pre-processed before being fixated...
May 12, 2018: Vision Research
https://www.readbyqxmd.com/read/29763696/feature-based-attention-elicited-by-precueing-in-an-orientation-discrimination-task
#19
Dan Huang, Linyan Xue, Meijian Wang, Qiyi Hu, Xiangdong Bu, Yao Chen
Specific visual features can be attended to and processed with a higher priority by our brain, termed feature-based attention (FBA). Two potential mechanisms for FBA have been suggested: goal-driven attentional mediating and stimulus-driven feature priming. Some researchers argued that several reported top-down FBA effects might also involve the influence of feature priming. To clarify this confusion, we used an orientation discrimination task in which the target was tilted randomly from the horizontal or vertical axis and presented at one of four iso-eccentric positions...
May 12, 2018: Vision Research
https://www.readbyqxmd.com/read/29761932/attentional-selection-and-suppression-in-children-and-adults
#20
Meirong Sun, Encong Wang, Jing Huang, Chenguang Zhao, Jialiang Guo, Dongwei Li, Li Sun, Boqi Du, Yulong Ding, Yan Song
The fundamental role of covert spatial attention is to enhance the processing of attended items while simultaneously ignoring irrelevant items. However, relatively little is known about how brain electrophysiological activities associated with target selection and distractor suppression are involved as they develop and become fully functional. The current study aimed to identify the neurophysiological bases of the development of covert spatial attention, focusing on electroencephalographic (EEG) markers of attentional selection (N2pc) and suppression (PD )...
May 15, 2018: Developmental Science
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