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Despite longer life expectancies due to combination antiretroviral therapy (cART), the prevalence of HIV-associated neurocognitive disorders (HAND) persists thus affecting 52% of the HIV population. Poor sleep quality is commonly reported in older adults and has been related to neurocognitive impairments. This is concerning given studies have shown that up to 75% of adults with HIV experience poor sleep, and by 2020, 70% of adults with HIV will be age 50 and older. It is important to examine sleep quality as it relates to neurocognitive function and HAND in older adults with HIV given its negative impact on cART adherence. Compared to Whites with HIV, African Americans (AA) are disproportionately affected by HIV and are more likely to experience poor sleep quality. This primary goal of this 1-year cross-sectional study is to examine racial differences in sleep quality and neurocognitive function among 60 African Americans and Whites with HIV (age 50+).
This study is designed with two aims: Aim 1a: To explore differences in sleep health between older HIV+ AA and Whites. 1b: To explore differences in domain-specific neurocognitive impairments between older HIV+ AA and Whites. Aim 2a: To explore the relationship between sleep health and neurocognitive function. 2b: To explore the relationship between sleep health and cART adherence. 2c: To explore mediation effects of cART adherence between sleep health and neurocognitive function. This is the first study to explore racial disparities in sleep health and neurocognitive function, using EEG/ERP metrics, among older HIV+ adults. There are two phases in this study: Phase I which consists of neurocognitive testing and sleep assessments with actigraphy, and Phase II which consist of a 20-30 min EEG. Measurements of electrical brain activity will be captured while participants engage in an Attention Network Test which measures executive function, attention, and speed of processing.
electroencephalography (EEG) and event related potentials (ERP)
Not yet recruiting
University of Alabama, Tuscaloosa
Published on BioPortfolio: 2019-07-17T10:05:15-0400
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A late-appearing component of the event-related potential. P300 stands for a positive deflection in the event-related voltage potential at 300 millisecond poststimulus. Its amplitude increases with unpredictable, unlikely, or highly significant stimuli and thereby constitutes an index of mental activity. (From Campbell, Psychiatric Dictionary, 6th ed)
The recorded electrical responses from nerve, muscle, SENSORY RECEPTOR, or area of the CENTRAL NERVOUS SYSTEM following stimulation. They range from less than a microvolt to several microvolts. The evoked potential can be auditory (EVOKED POTENTIALS, AUDITORY), somatosensory (EVOKED POTENTIALS, SOMATOSENSORY), visual (EVOKED POTENTIALS, VISUAL), or motor (EVOKED POTENTIALS, MOTOR), or other modalities that have been reported. Often used synonymously to event-related potentials which are associated with higher level cognitive processes.
Depolarization of membrane potentials at the SYNAPTIC MEMBRANES of target neurons during neurotransmission. Excitatory postsynaptic potentials can singly or in summation reach the trigger threshold for ACTION POTENTIALS.
Postsynaptic potentials generated from a release of neurotransmitters from a presynaptic nerve terminal in the absence of an ACTION POTENTIAL. They may be m.e.p.p.s (miniature EXCITATORY POSTSYNAPTIC POTENTIALS) or m.i.p.p.s (miniature INHIBITORY POSTSYNAPTIC POTENTIALS).
A negative shift of the cortical electrical potentials that increases over time. It is associated with an anticipated response to an expected stimulus and is an electrical event indicative of a state of readiness or expectancy.
Standard antiretroviral therapy (ART) consists of the combination of at least three antiretroviral (ARV) drugs to maximally suppress the HIV virus and stop the progression of HIV disease. Huge reductions have been seen in rates of death and suffering whe...
AIDS and HIV
AIDS; Acquired Immune Deficiency Syndrome. HIV; Human Immunodeficiency Virus HIV infection causes AIDS. HIV infection also causes the production of anti-HIV antibodies, which forms the test for HIV in patients. People who have the HIV antibodies are ...