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Spatial attention in HIV-1 infection: a preliminary report
E M Martin1, D J Sorensen, L C Robertson
1Department of Neurology, University of California, Davis.
The Journal of Neuropsychiatry and Clinical Neurosciences
|January 1, 1992
Summary
Human immunodeficiency virus (HIV-1) infection may impact spatial attention. Asymptomatic HIV-1 individuals show deficits in attention inhibition, suggesting cognitive slowing involves attentional processes.
Area of Science:
- Neuroscience
- Psychology
- Immunology
Background:
- Human immunodeficiency virus (HIV-1) infection can lead to cognitive impairments.
- Understanding the specific cognitive deficits in asymptomatic HIV-1 individuals is crucial for early intervention.
Purpose of the Study:
- To investigate spatial attention abilities in asymptomatic and symptomatic HIV-1 seropositive individuals compared to seronegative controls.
- To explore potential attentional components contributing to cognitive slowing in HIV-1 infection.
Main Methods:
- A preliminary study involving 30 HIV-1 seropositive subjects (asymptomatic and symptomatic) and 14 seronegative controls.
- Utilized a reaction time measure assessing spatial attention, including cue-target intervals to evaluate facilitation and inhibition.
Main Results:
- Asymptomatic HIV-1 subjects exhibited normal reaction time facilitation but impaired attention inhibition at longer cue-target intervals.
- Symptomatic HIV-1 subjects were impaired in reaction time facilitation.
- Findings suggest subtler spatial attentional deficits in asymptomatic individuals.
Conclusions:
- Cognitive slowing in HIV-1 infection appears to involve an attentional component.
- Both automatic and controlled attentional processes may be affected in HIV-1 infection.
- Early identification of attentional deficits is important for managing HIV-1 associated cognitive changes.