A5069405557- Neural and Behavioral Psychology Studies
- Neural dynamics and brain function
- Memory and Neural Mechanisms
- Functional Brain Connectivity Studies
- Neural Networks and Applications
- Face Recognition and Perception
- Visual perception and processing mechanisms
- EEG and Brain-Computer Interfaces
- Parallel Computing and Optimization Techniques
- Mental Health Research Topics
- Neurobiology of Language and Bilingualism
- Cognitive Functions and Memory
- Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Interconnection Networks and Systems
- Visual Attention and Saliency Detection
- Fractal and DNA sequence analysis
- Autism Spectrum Disorder Research
- Blind Source Separation Techniques
- Memory Processes and Influences
- Ferroelectric and Negative Capacitance Devices
- Educational and Psychological Assessments
- Behavioral Health and Interventions
- Educational Innovations and Challenges
- Meta-analysis and systematic reviews
- Human Resource Development and Performance Evaluation
University of Nebraska–Lincoln
2017-2021
Institute for Educational Leadership
1800-2020
North Staffordshire Combined Healthcare NHS Trust
2019
Johns Hopkins University
2018
Yale University
2006-2016
University of Illinois Urbana-Champaign
1998-2013
Massachusetts Institute of Technology
2013
Hartford Financial Services (United States)
2006-2013
University of Nottingham Malaysia Campus
2013
Institute for Community Living
2006-2013
Lower delay discounting (better self-control) is linked to higher intelligence, but the basis of this relation uncertain. To investigate potential role working memory (WM) processes, we assessed discounting, intelligence (g), WM (span tasks, 3-back task), and WM-related neural activity (using functional magnetic resonance imaging) in 103 healthy adults. Delay was negatively correlated with g WM. explained no variance beyond that by g, which suggests processes through relates are shared g....
This paper considers Rigel, a programmable accelerator architecture for broad class of data- and task-parallel computation. Rigel comprises 1000+ hierarchically-organized cores that use fine-grained, dynamically scheduled single-program, multiple-data (SPMD) execution model. Rigel's low-level programming interface adopts single global address space model where parallel work is expressed in task-centric, bulk-synchronized manner using minimal hardware support. Compared to existing...
We used a multi-voxel classification analysis of functional magnetic resonance imaging (fMRI) data to determine what extent item-specific information about complex natural scenes is represented in several category-selective areas human extrastriate visual cortex during perception and mental imagery. Participants the scanner either viewed or were instructed visualize previously memorized scene exemplars, neuroimaging subsequently subjected pattern (MVPA) using support vector machine (SVM)...
Summary Data analysis workflows in many scientific domains have become increasingly complex and flexible. To assess the impact of this flexibility on functional magnetic resonance imaging (fMRI) results, same dataset was independently analyzed by 70 teams, testing nine ex-ante hypotheses. The analytic approaches is exemplified fact that no two teams chose identical to analyze data. This resulted sizeable variation hypothesis test even for whose statistical maps were highly correlated at...
Autism Spectrum Disorders (ASDs) are characterized by core deficits in social functions. Two theories have been suggested to explain these deficits: mind-blindness theory posits impaired mentalizing processes (i.e. decreased ability for establishing a representation of others' state mind), while motivation proposes that diminished reward value information leads reduced attention, interactions, and learning. Mentalizing integral typical neuroimaging evidence points independent brain networks...
In this paper, we evaluate a set of coherence architectures in the context 1024-core chip multiprocessor (CMP) tailored to throughput-oriented parallel workloads. Based on our analysis, develop and two techniques for scaling thousand-core CMPs. We find that broadcast-based probe filtering scheme provides reasonable performance up 128 cores some benchmarks, but is not generally scalable. propose broadcast-collective network accelerating filter misses, which extends scalability falls short...
Perceptual processing of a target stimulus may be inhibited if its location has just been cued, phenomenon spatial attention known as inhibition return (IOR). In the research reported here, we demonstrated striking effect, wherein items that have focus reflective (internal to an active representation) also are inhibited. Participants saw two items, followed by cue think back (i.e., refresh, or direct toward) one item, and then had identify either refreshed unrefreshed novel item. Responses...
Rigel is a single-chip accelerator architecture with 1,024 independent processing cores targeted at broad class of data- and task-parallel computation. This article discusses Rigel's motivation, evaluates its performance scalability as well power area requirements, explores memory systems in the context 1,024-core accelerators. The authors also consider future opportunities challenges for large-scale designs.
Cocaine addiction is characterized by impulsivity, impaired social relationships, and abnormal mesocorticolimbic reward processing, but their interrelationships relative to stages of cocaine are unclear. We assessed blood-oxygenation-level dependent (BOLD) signal in ventral dorsal striatum during functional magnetic resonance imaging (fMRI) current (CCD; n = 30) former (FCD; 28) subjects as well healthy control (HC; 31) while playing an interactive competitive Domino game involving...
Abstract Refreshing is the component cognitive process of directing reflective attention to one several active mental representations. Previous studies using fMRI suggested that refresh tasks involve a initiating refreshing as well top–down modulation representational regions central refreshing. However, those were limited by fMRI's low temporal resolution. In this study, we used EEG examine time course on scale milliseconds rather than seconds. ERP analyses showed typical task does have...
Recent research has demonstrated top-down attentional modulation of activity in extrastriate category-selective visual areas while stimuli are view (perceptual attention) and after they removed from (reflective attention). Perceptual attention is capable both enhancing suppressing relative to a passive viewing baseline. In this study, we demonstrate that brief, simple act reflective ("refreshing") also some scene-selective (the parahippocampal place area [PPA]) but not others (refreshing...
Autism spectrum disorders (ASD) impact the cognitive, social, communicative and behavioral abilities of an individual. The development new clinical decision support systems is importance in reducing delay between presentation symptoms accurate diagnosis. In this work, we contribute a database consisting video clips typical (normal) atypical (such as hand flapping, spinning or rocking) behaviors, displayed natural settings, which have been collected from YouTube website. We propose...
This functional magnetic resonance imaging study examined medial prefrontal cortex (mPFC) activity as young and older participants rated an unknown person, themselves, on personality characteristics. For both participants, there was greater activation in ventral mPFC (anterior cingulate) when they made judgments about own-age than other-age individuals. Additionally, across target age participant age, a more anterior region of (largely frontal gyrus, others themselves. We discuss potential...
The blood-oxygen-level-dependent (BOLD) signal measured in functional magnetic resonance imaging (fMRI) experiments is generally regarded as sluggish and poorly suited for probing neural function at the rapid timescales involved sentence comprehension. However, recent studies have shown value of acquiring data with very short repetition times (TRs), not merely terms improvements contrast to noise ratio (CNR) through averaging, but also additional fine-grained temporal information. Using...
This functional magnetic resonance imaging study presented participants with a face and scene simultaneously on each trial, assessed the impact of perceptual versus reflective selective attention activity in parahippocampal place area. Young older adults showed equivalent activation area when cued to attend stimuli were perceptually present refresh (briefly think about) after no longer present. The groups also deactivation However, less than young face, providing evidence for greater...