Explanipedia

“You Don't Have to Be in Poverty to Need Assistance to Pay for Childcare”: Perspectives from Middle-Income New Mexico Families Receiving Subsidized Care Open

Hailey Heinz, Mary Nava, Monica Fiorella Asencio Pimentel, David W. Purcell, Rebecca Fowler , et al. · 2025

Population Percentage and Population Size of Men Who Have Sex With Men in the United States, 2017-2021: Meta-Analysis of 5 Population-Based Surveys Open

Brady Bennett, Stephanie Dubose, Ya-Lin A. Huang, Christopher H. Johnson, Karen W. Hoover , et al. · 2024

Background Male-to-male sexual transmission continues to account for the greatest proportion of new HIV diagnoses in the United States. However, calculating population-specific surveillance metrics for HIV and other sexually transmitted in…

Sexual behavior among HIV‐positive men who have sex with men: What's in a label? Open

Trevor Hart, Richard J. Wolitski, David W. Purcell, Cynthia Gómez, Perry N. Halkitis , et al. · 2024

Relatively little attention has been paid to the use and importance of labels used by men who have sex with men to describe insertive or receptive sexual behavior during intercourse. This study examines sexual self‐labels, sexual behavior,…

Partner Awareness of the Serostatus of HIV-Seropositive Men Who Have Sex With Men: Impact on Unprotected Sexual Behavior Open

Trevor Hart, Richard J. Wolitski, David W. Purcell, Jeffrey T. Parsons, Cynthia Gómez , et al. · 2024

Prior research has provided conflicting evidence about the association between partner awareness of an HIV-seropositive person's serostatus and HIV transmission behavior via unprotected intercourse. The current study examined partner aware…

Social Anxiety and HIV Transmission Risk among HIV-Seropositive Male Patients Open

Trevor Hart, Carolyn A. James, David W. Purcell, Eugene W. Farber · 2024

The role of psychological factors in predicting HIV sexual transmission risk behavior is increasingly of interest in prevention research. Social anxiety, or anxiety about being evaluated in interpersonal situations, is associated with unpr…

Validation of an integrated pressure level measured earmold wideband real-ear-to-coupler difference measurement Open

Matthew Urichuk, David W. Purcell, Prudence Allen, Susan Scollie · 2023

To validate measurement of predicted earmold wideband real-ear-to-coupler difference (wRECD) using an integrated pressure level (IPL) calibrated transducer and the incorporation of an acoustically measured tubing length correction. Unilate…

Predicting Hearing aid Benefit Using Speech-Evoked Envelope Following Responses in Children With Hearing Loss Open

Vijayalakshmi Easwar, David W. Purcell, Trevor Wright · 2023

Electroencephalography could serve as an objective tool to evaluate hearing aid benefit in infants who are developmentally unable to participate in hearing tests. We investigated whether speech-evoked envelope following responses (EFRs), a…

Perturbing the consistency of auditory feedback in speech Open

Daniel R. Nault, Takashi Mitsuya, David W. Purcell, Kevin G. Munhall · 2022

Sensory information, including auditory feedback, is used by talkers to maintain fluent speech articulation. Current models of speech motor control posit that speakers continually adjust their motor commands based on discrepancies between …

Variability in the Estimated Amplitude of Vowel-Evoked Envelope Following Responses Caused by Assumed Neurophysiologic Processing Delays Open

Vijayalakshmi Easwar, Steven J. Aiken, Krystal Beh, Emma McGrath, Mary Galloy , et al. · 2022

The Influence of Male- and Female-Spoken Vowel Acoustics on Envelope-Following Responses Open

Vijayalakshmi Easwar, David W. Purcell, Maaike Van Eeckhoutte, Steven J. Aiken · 2022

The influence of male and female vowel characteristics on the envelope-following responses (EFRs) is not well understood. This study explored the role of vowel characteristics on the EFR at the fundamental frequency (f0) in response to the…

Pediatric Responses to Fundamental and Formant Frequency Altered Auditory Feedback: A Scoping Review Open

Caitlin Coughler, Keelia L. Quinn de Launay, David W. Purcell, Janis Oram Cardy, Deryk S. Beal · 2022

Purpose The ability to hear ourselves speak has been shown to play an important role in the development and maintenance of fluent and coherent speech. Despite this, little is known about the developing speech motor control system throughou…

Sound level context modulates neural activity in the human brainstem Open

Björn Herrmann, Sonia Yasmin, Kurdo Araz, David W. Purcell, Ingrid S. Johnsrude · 2021

Optimal perception requires adaptation to sounds in the environment. Adaptation involves representing the acoustic stimulation history in neural response patterns, for example, by altering response magnitude or latency as sound-level conte…

The Influence of Sensation Level on Speech-Evoked Envelope Following Responses Open

Vijayalakshmi Easwar, Jen Birstler, Adrienne L. Harrison, Susan Scollie, David W. Purcell · 2021

Objectives: To evaluate sensation level (SL)–dependent characteristics of envelope following responses (EFRs) elicited by band-limited speech dominant in low, mid, and high frequencies. Design: In 21 young normal hearing adults, EFRs were …

Sound level context modulates neural activity in the human brainstem Open

Björn Herrmann, Sonia Yasmin, Kurdo Araz, David W. Purcell, Ingrid S. Johnsrude · 2021

Optimal perception requires adaptation to sounds in the environment. Adaptation involves representing the acoustic stimulation history in neural response patterns, for example, by altering response magnitude or latency as sound-level conte…

Forty Years of HIV: The Intersection of Laws, Stigma, and Sexual Behavior and Identity Open

David W. Purcell · 2021

AffiliationsDavid W. Purcell is retired from the Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA.

Characteristics of Speech-Evoked Envelope Following Responses in Infancy Open

Vijayalakshmi Easwar, Susan Scollie, Michael Lasarev, Matthew Urichuk, Steven J. Aiken , et al. · 2021

Envelope following responses (EFRs) may be a useful tool for evaluating the audibility of speech sounds in infants. The present study aimed to evaluate the characteristics of speech-evoked EFRs in infants with normal hearing, relative to a…

Optimal Allocation of Societal HIV Prevention Resources to Reduce HIV Incidence in the United States Open

Stephanie L. Sansom, Katherine A. Hicks, Justin Carrico, Evin Uzun Jacobson, Ram K. Shrestha , et al. · 2020

Objectives. To optimize combined public and private spending on HIV prevention to achieve maximum reductions in incidence. Methods. We used a national HIV model to estimate new infections from 2018 to 2027 in the United States. We estimate…

Exploring Spirituality and Technology Receptivity Among a Sample of Older Blacks to Inform a Tailored Chronic Disease Self-Management mHealth Intervention Open

Kamilah B. Thomas-Purcell, Ibe TA, David W. Purcell, Gwendolyn P. Quinn, Raymond L. Ownby · 2020

Kamilah Thomas-Purcell,1 Tochukwu Adaobi Ibe,2 Donrie Purcell,3 Gwendolyn Quinn,4 Raymond Ownby3 1Department of Health Science, Dr. Pallavi Patel College of Health Care Sciences, Nova Southeastern University, Ft. Lauderdale, FL, USA; 2Mayo…

A novel approach to investigate subcortical and cortical sensitivity to temporal structure simultaneously Open

Sonia Yasmin, David W. Purcell, Sangamanatha Ankmnal-Veeranna, Ingrid S. Johnsrude, Björn Herrmann · 2020

Hearing loss is associated with changes at the peripheral, subcortical, and cortical auditory stages. Research often focuses on these stages in isolation, but peripheral damage has cascading effects on central processing, and different sta…

Trajectories of and disparities in HIV prevalence among Black, white, and Hispanic/Latino men who have sex with men in 86 large U.S. metropolitan statistical areas, 1992–2013 Open

Leslie D. Williams, Ronald D. Stall, Barbara Tempalski, Kevin Jefferson, Justin C. Smith , et al. · 2020

The Accuracy of Envelope Following Responses in Predicting Speech Audibility Open

Vijayalakshmi Easwar, Jen Birstler, Adrienne L. Harrison, Susan Scollie, David W. Purcell · 2020

Objectives: The present study aimed to (1) evaluate the accuracy of envelope following responses (EFRs) in predicting speech audibility as a function of the statistical indicator used for objective response detection, stimulus phoneme, fre…

Policy and Public Health Open

Deron C. Burton, Scott Burris, Jonathan Mermin, David W. Purcell, Sara C. Zeigler , et al. · 2020

A Novel Approach to Investigate Subcortical and Cortical Sensitivity to Temporal Structure Simultaneously Open

Sonia Varma, David W. Purcell, Sangamanatha Ankmnal-Veeranna, Ingrid S. Johnsrude, Björn Herrmann · 2020

Hearing loss is associated with changes at the peripheral, subcortical, and cortical auditory stages. Research often focuses on these stages in isolation, but peripheral damage has cascading effects on central processing, and different sta…

Effect of Internet-Distributed HIV Self-tests on HIV Diagnosis and Behavioral Outcomes in Men Who Have Sex With Men Open

Robin J. MacGowan, Pollyanna R. Chávez, Craig B. Borkowf, S. Michele Owen, David W. Purcell , et al. · 2019

ClinicalTrials.gov identifier: NCT02067039.

<i>Vital Signs:</i>HIV Transmission Along the Continuum of Care — United States, 2016 Open

Zihao Li, David W. Purcell, Stephanie L. Sansom, Demorah Hayes, H. Irene Hall · 2019

Approximately 80% of new HIV transmissions are from persons who do not know they have HIV infection or are not receiving regular care. Going forward, increasing the percentage of persons with HIV infection who have achieved viral suppressi…

The Medial Olivocochlear Reflex Is Unlikely to Play a Role in Listening Difficulties in Children Open

Sriram Boothalingam, Chris Allan, Prudence Allen, David W. Purcell · 2019

The medial olivocochlear reflex (MOCR) has been implicated in several auditory processes. The putative role of the MOCR in improving speech perception in noise is particularly relevant for children who complain of listening difficulties (L…

Estimating national rates of HIV infection among MSM, persons who inject drugs, and heterosexuals in the United States Open

Nicole Crepaz, Kristen L. Hess, David W. Purcell, H. Irene Hall · 2018

The estimated HIV diagnosis and HIV infection rates decreased for several transmission categories, and also race/ethnicity and age subgroups. MSM continue to be disproportionately affected. Disparities remain and have widened for some grou…

Patterns of Racial/Ethnic Disparities and Prevalence in HIV and Syphilis Diagnoses Among Men Who Have Sex With Men, 2016: A Novel Data Visualization Open

Patrick S. Sullivan, David W. Purcell, Jeremy A. Grey, Kyle T. Bernstein, Thomas L. Gift , et al. · 2018

Objectives. To describe disparities in HIV infection and syphilis among gay, bisexual, and other men who have sex with men (MSM) in US states through ratio-based measures and graphical depictions of disparities. Methods. We used state-leve…

Enhancing HIV Prevention and Care Through CAPUS and Other Demonstration Projects Aimed at Achieving National HIV/AIDS Strategy Goals, 2010-2018 Open

David W. Purcell, Stephen A. Flores, Linda J. Koenig, Janet Cleveland, Jonathan Mermin · 2018

No otoacoustic evidence for a peripheral basis of absolute pitch Open

Larissa McKetton, David W. Purcell, Victoria Stone, Jessica A. Grahn, Christopher Bergevin · 2018

Absolute pitch (AP) is the ability to identify the perceived pitch of a sound without an external reference. Relatively rare, with an incidence of approximately 1/10,000, the mechanisms underlying AP are not well understood. This study exa…

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