A5076665541- Neural and Behavioral Psychology Studies
- Neural dynamics and brain function
- Memory and Neural Mechanisms
- Memory Processes and Influences
- EEG and Brain-Computer Interfaces
- Functional Brain Connectivity Studies
- Cognitive Functions and Memory
- Face Recognition and Perception
- Mindfulness and Compassion Interventions
- Dementia and Cognitive Impairment Research
- Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Stress Responses and Cortisol
- Human-Automation Interaction and Safety
- Motor Control and Adaptation
- Neuroscience and Neuropharmacology Research
- Identity, Memory, and Therapy
- Muscle activation and electromyography studies
- Mind wandering and attention
- Visual perception and processing mechanisms
- Heart Rate Variability and Autonomic Control
- Cognitive Abilities and Testing
- Cognitive Science and Mapping
- Domain Adaptation and Few-Shot Learning
- Transcranial Magnetic Stimulation Studies
- Creativity in Education and Neuroscience
The University of Texas at Austin
2016-2025
Princeton University
2011-2020
Imaging Center
2019
University of Florida
2019
The University of Texas Southwestern Medical Center
2019
Massachusetts General Hospital
2019
Harvard University
2019
Virginia Commonwealth University
2019
McLean Hospital
2019
University of Wisconsin–Madison
2008-2011
It is widely assumed that the short-term retention of information accomplished via maintenance an active neural trace. However, we demonstrate memory can be preserved across a brief delay despite apparent loss sustained representations. Delay period activity may, in fact, reflect focus attention, rather than STM. We unconfounded attention and by causing external internal shifts away from items were being actively retained. Multivariate pattern analysis fMRI indicated only within elicited...
Studies exploring the role of neural oscillations in cognition have revealed sustained increases alpha-band (~8-14 Hz) power during delay period delayed-recognition short-term memory tasks. These been proposed to reflect inhibition, for example, cortical areas representing task-irrelevant information, or potentially interfering representations from previous trials. Another possibility, however, is that elevated delay-period (DPABP) reflects selection and maintenance rather than, addition to,...
Abstract Neurofeedback has begun to attract the attention and scrutiny of scientific medical mainstream. Here, neurofeedback researchers present a consensus-derived checklist that aims improve reporting experimental design standards in field.
For decades it has been assumed that sustained, elevated neural activity--the so-called active trace--is the correlate of short-term retention information. However, a recent fMRI study suggested this activity may be more related to attention than retention. Specifically, multivariate pattern analysis failed find evidence information was outside focus attention, but nonetheless in STM, retained an state. Here, we replicate and extend finding by querying signatures attended versus unattended...
Significance Forgetting is often considered to be bad, but selective forgetting of unreliable information can have the positive side effect reducing mental clutter, thereby making it easier access our most important memories. Prior studies focused on passive mechanisms (decay, interference) or effortful inhibition by cognitive control. Here we report discovery an active mechanism for that weakens memories selectively and without burdening conscious mind. Specifically, show brain...
This study describes a functional magnetic resonance imaging of humans engaged in long-term memory (LTM) and working tasks. A pattern classifier learned to identify patterns brain activity associated with viewing making judgments about three categories pictures (famous people, famous locations, common objects). The evaluation these stimuli relied on perception semantic and/or episodic memories. We investigated whether this could successfully decode from subsequent delayed paired-associate...
Switching attention from one thought to the next propels our mental lives forward. However, it is unclear how this thought-juggling affects ability remember these thoughts. Here we show that competition between neural representations of pictures in working memory can impair subsequent recognition those pictures. We use pattern classifiers decode functional magnetic resonance imaging (fMRI) data a retro-cueing task where participants juggle two memory. Trial-by-trial fluctuations dynamics are...
This study was designed to explore neural evidence for the simultaneous engagement of multiple mental codes while retaining a visual object in short-term memory (STM) and, if successful, bases strategic prioritization among these codes. We used multivariate pattern analysis fMRI data track patterns brain activity associated with three common codes: visual, verbal, and semantic. When participants did not know which dimension sample stimulus would be tested, during delay indicated that...
Emerging evidences have shown that one form of mental training-mindfulness meditation, can improve attention, emotion regulation and cognitive performance through changing brain activity structural connectivity. However, whether how the short-term mindfulness meditation alters large-scale networks are not well understood. Here, we applied a novel data-driven technique, multivariate pattern analysis (MVPA) to resting-state fMRI (rsfMRI) data identify changes in patterns assess neural...
Direct manipulation of brain activity can be used to investigate causal brain-behavior relationships. Current noninvasive neural stimulation techniques are too coarse manipulate behaviors that correlate with fine-grained spatial patterns recorded by fMRI. However, these manipulated having people learn self-regulate their own activity. This technique, known as fMRI neurofeedback, faces challenges many participants unable self-regulate. The causes this non-responder effect not well understood...
The intention to forget can produce long-lasting effects. This ability has been linked suppression of both rehearsal and retrieval unwanted memories, processes mediated by the prefrontal cortex hippocampus. Here, we describe an alternative account in which is associated with increased engagement information. We used pattern classifiers decode human functional magnetic resonance imaging data from a task male female participants viewed series pictures were instructed remember or each one....
Distinguishing individuals from brain connectivity, and studying the genetic influences on that identification across different ages, improves our basic understanding of functional network organization. We applied support vector machine classifiers to two datasets twins (adult, pediatric) repeat-scan pediatric). Classifiers were trained resting state connectivity magnetic resonance imaging (rs-fcMRI) data used predict co-twin pairs independent data. The successfully identified a previous...
Meditation practices are often used to cultivate interoception or internally-oriented attention bodily sensations, which may improve health via cognitive and emotion regulation of signals. However, it remains unclear how meditation impacts internal states due lack measurement tools that can objectively assess mental during practice itself, produce time estimates focus at individual group levels. To address these gaps, we tested the feasibility applying multi-voxel pattern analysis (MVPA)...
An adaptive memory system should prioritize information surrounding a powerful learning event that may prove useful for predicting future meaningful events. The behavioral tagging hypothesis provides mechanistic framework to interpret how weak experiences persist as durable memories through temporal association with strong experience. Memories are composed of multiple elements, and different mnemonic aspects the same experience be uniquely affected by mechanisms retroactively modulate weakly...
Perceptual distraction distorts visual working memories. Recent research has shown divergenteffects of on memory performance, including attractive biases, impairing memoryprecision, and increasing guess rate, indicating multiple mechanisms interferences.Here, we propose a novel signal intrusion model (TCC-Intrusion) to reconcile those discrepantresults. We hypothesized that sensory interference is driven by the integration target signaland an intrusive distractor signal. Model comparisons...
<title>Abstract</title> Difficulties in controlling thought, including pathological rumination, worry, and intrusive thoughts, occur a range of mental health disorders. Here we identify specific patterns brain activity distributed within across canonical networks that are associated with self-reported difficulties one’s thoughts. These were derived using multivariate pattern analysis on fMRI data recorded while participants engaged one four operations an item working memory: maintaining it,...
How we attend to our thoughts affects how environment. Holding information in working memory can automatically bias visual attention toward matching information. By observing attentional biases on reaction times search during a delay, it is possible reconstruct the source of that using machine learning techniques and thereby behaviorally decode content memory. Can this be done when more than one item held memory? There some evidence multiple items simultaneously attention, but effects have...