A5086533065- Functional Brain Connectivity Studies
- Visual perception and processing mechanisms
- Neural dynamics and brain function
- EEG and Brain-Computer Interfaces
- Retinal Development and Disorders
- Pain Mechanisms and Treatments
- Neuroscience and Neural Engineering
- Neural Networks and Applications
- Musculoskeletal pain and rehabilitation
- Speech and Audio Processing
- Suicide and Self-Harm Studies
- Heart Rate Variability and Autonomic Control
- Neurological disorders and treatments
- Infrared Thermography in Medicine
- Parasites and Host Interactions
- Psychosomatic Disorders and Their Treatments
- Ocular and Laser Science Research
- Advanced MRI Techniques and Applications
- Optical Imaging and Spectroscopy Techniques
- Plant-based Medicinal Research
- Speech Recognition and Synthesis
- Insect and Pesticide Research
- Viral Infections and Vectors
- Zoonotic diseases and public health
- Pain Management and Placebo Effect
Baylor College of Medicine
2010-2024
Rice University
2018-2024
Baylor University
2009
The University of Texas MD Anderson Cancer Center
2005
The University of Texas Health Science Center at Houston
2004
The purpose of this study was to examine the relationship between laboratory behavioral measured impulsivity (using Immediate and Delayed Memory Tasks) suicidal attempt histories. Three groups adults were recruited, those with either: no previous suicide attempts (Control, n = 20), only a single (Single, or multiple (Multiple, 10). As hypothesized, impulsive responses increased number (Control < Single Multiple). This helps demonstrate how measures can be used discriminate based on histories...
Significance Partial damage of the primary visual cortex (V1), or to white matter inputs V1 (optic radiation), cause blindness in specific regions field. We use functional MRI measure responses individual patients with a localized, chronic injury that resulted quarter The fMRI and controls are generally similar, but some differences from can be measured. Importantly, spared early not always congruent perception. Understanding how properties areas respond will lead better strategies for...
Brain–computer interfaces (BCIs) can convert mental states into signals to drive real-world devices, but it is not known if a given covert task the same when performed with and without BCI-based control. Using BCI likely involves additional cognitive processes, such as multitasking, attention, conflict monitoring. In addition, challenging measure quality of performance. We used whole-brain classifier-based real-time functional MRI address these issues, because method provides both maps...
This proof-of-concept study uses individualized functional magnetic resonance imaging neuromodulation (iNM) to explore the mechanisms that enhance BOLD signals in visuospatial perception (VP) networks are crucial for navigation. Healthy participants ( n = 8) performed a VP up- and down-direction discrimination task at full subthreshold coherence through peripheral vision, superimposed direction visual imagery (VI) central space under iNM control conditions. targets anatomical middle-...
This study examines the effects of neurofeedback provided by support vector machine (SVM) classification-based real-time functional magnetic resonance imaging (rt-fMRI) during two types motor tasks. approach also enables examination neural regions associated with predicting mental states in different domains control, which is critical to further our understanding normal and impaired function. Healthy volunteers (n = 13) performed both a simple button tapping task, covert rate-of-speech...
Abstract Neuromodulation is a growing precision-medicine approach to modulating neural activity that can be used treat neuropsychiatric, and general pathophysiologic conditions. We developed individualized fMRI neuromodulation (iNM) study the mechanisms of visuospatial perception modulation with long-term goal applying it in low-vision patient populations having cortical blindness or impairment preceding subjective cognitive impairment. To determine these mechanisms, we direction coherence...
Neurofeedback (NF) is endogenous neuromodulation of circumscribed brain circuitry. While its use real-time activity in a closed-loop system similar to brain–computer interfaces, instead controlling an external device like the latter, goal NF change targeted function. In this special issue on NF, we present current and future methods for extracting manipulating neural function, how these may reveal new insights about applications, rarely discussed ethical considerations guiding interpreting...
Abstract Damage to the primary visual cortex (V1) leads a field loss (scotoma) in retinotopically corresponding part of field. Nonetheless, small amount residual sensitivity persists within blind This capacity has been linked activity observed middle temporal area complex (V5/MT+). However, it remains unknown whether organization hV5/MT+ changes following V1 lesions. We studied five patients with dense homonymous defects quadrant as result partial V1+ or optic radiation To do so, we...
<h3>Objective:</h3> The goal is to alleviate lower cranial neuropathy following radiation (head and neck cancer treatment) for which no treatment available. Current pharmacotherapeutics (steroids opioids) cannot be tolerated, due their side-effects the drug-drug interactions. <h3>Background:</h3> Papageorgiou lab has developed an individualized real-time fMRI closed-loop-neuromodulation (iRTfMRI-cNMT) upregulate sensorimotor brain networks that regulate tongue motor sensory control (TMSC)....