Ryan P. Bell
YOU?
Author Swipe
View article: Distress tolerance among substance users is associated with functional connectivity between prefrontal regions during a distress tolerance task
Distress tolerance among substance users is associated with functional connectivity between prefrontal regions during a distress tolerance task Open
Distress tolerance (DT), defined as the ability to persist in goal directed behavior while experiencing affective distress, is implicated in the development and maintenance of substance use disorders. While theory and evidence indicate tha…
View article: Cocaine Use Prediction With Tensor-Based Machine Learning on Multimodal MRI Connectome Data
Cocaine Use Prediction With Tensor-Based Machine Learning on Multimodal MRI Connectome Data Open
This letter considers the use of machine learning algorithms for predicting cocaine use based on magnetic resonance imaging (MRI) connectomic data. The study used functional MRI (fMRI) and diffusion MRI (dMRI) data collected from 275 indiv…
View article: Cocaine Use Prediction with Tensor-based Machine Learning on Multimodal MRI Connectome Data
Cocaine Use Prediction with Tensor-based Machine Learning on Multimodal MRI Connectome Data Open
This paper considers the use of machine learning algorithms for predicting cocaine use based on magnetic resonance imaging (MRI) connectomic data. The study utilized functional MRI (fMRI) and diffusion MRI (dMRI) data collected from 275 in…
View article: Cocaine use is associated with cerebral white matter hyperintensities in HIV disease
Cocaine use is associated with cerebral white matter hyperintensities in HIV disease Open
Background White matter hyperintensities (WMH), a marker of cerebral small vessel disease and predictor of cognitive decline, are observed at higher rates in persons with HIV (PWH). The use of cocaine, a potent central nervous system stimu…
View article: The Individualized Prediction of Neurocognitive Function in People Living with HIV Based on Clinical and Multimodal Connectome Data
The Individualized Prediction of Neurocognitive Function in People Living with HIV Based on Clinical and Multimodal Connectome Data Open
Neurocognitive impairment continues to be common comorbidity for people living with HIV (PLWH). Given the chronic nature of HIV disease, identifying reliable biomarkers of these impairments is essential to advance our understanding of the …
View article: Principal component analysis denoising improves sensitivity of MR diffusion to detect white matter injury in neuroHIV
Principal component analysis denoising improves sensitivity of MR diffusion to detect white matter injury in neuroHIV Open
Background and Purpose Diffusion‐weighted imaging is able to capture important information about cerebral white matter (WM) structure. However, diffusion data can suffer from MRI and biological noise that degrades the quality of the images…
View article: Human immunodeficiency virus<scp>‐related</scp> decreases in corpus callosal integrity and corresponding increases in functional connectivity
Human immunodeficiency virus<span>‐related</span> decreases in corpus callosal integrity and corresponding increases in functional connectivity Open
People living with human immunodeficiency virus (PLWH) often have neurocognitive impairment. However, findings on HIV‐related differences in brain network function underlying these impairments are inconsistent. One principle frequently abs…
View article: The Acute Effects of Time-Varying Caloric Vestibular Stimulation as Assessed With fMRI
The Acute Effects of Time-Varying Caloric Vestibular Stimulation as Assessed With fMRI Open
We describe preliminary results from the application of time-varying caloric vestibular stimulation (tvCVS) to volunteers during a continuous blood oxygen level dependent (BOLD) functional MRI (fMRI) acquisition, recording baseline, during…
View article: Structural and Functional Brain Abnormalities in Human Immunodeficiency Virus Disease Revealed by Multimodal Magnetic Resonance Imaging Fusion: Association With Cognitive Function
Structural and Functional Brain Abnormalities in Human Immunodeficiency Virus Disease Revealed by Multimodal Magnetic Resonance Imaging Fusion: Association With Cognitive Function Open
Background Human immunodeficiency virus (HIV)–associated neurocognitive impairment remains a prevalent comorbidity that impacts daily functioning and increases morbidity. While HIV infection is known to cause widespread disruptions in the …
View article: Synergistic effects of marijuana abuse and HIV infection on neural activation during a cognitive interference task
Synergistic effects of marijuana abuse and HIV infection on neural activation during a cognitive interference task Open
Marijuana use, which is disproportionately prevalent among human immunodeficiency virus (HIV)‐infected persons, can alter activity in fronto‐parietal regions during cognitively demanding tasks. While HIV is also associated with altered neu…
View article: White Matter Changes in HIV+ Women with a History of Cocaine Dependence
White Matter Changes in HIV+ Women with a History of Cocaine Dependence Open
Cocaine use is associated with the transmission of human immunodeficiency (HIV) virus through risky sexual behavior. In HIV+ individuals, cocaine use is linked with poor health outcomes, including HIV-medication non-adherence and faster di…
View article: Distress tolerance among substance users is associated with functional connectivity between prefrontal regions during a distress tolerance task
Distress tolerance among substance users is associated with functional connectivity between prefrontal regions during a distress tolerance task Open
Distress tolerance (DT), defined as the ability to persist in goal directed behavior while experiencing affective distress, is implicated in the development and maintenance of substance use disorders. While theory and evidence indicate tha…