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Prospective memory in HIV-1 infection.

Catherine L Carey1, Steven Paul Woods, Julie D Rippeth

  • 1Joint Doctoral Program in Clinical Psychology, San Diego State University and University of California, 92103, USA

Journal of Clinical and Experimental Neuropsychology
|May 9, 2006
PubMed
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HIV-1 infection impairs prospective memory (ProM), a crucial cognitive function involving future intentions. This deficit, linked to fronto-striatal circuit damage, affects memory retrieval but not recognition.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Infectious Disease Research

Background:

  • HIV-1 infection is associated with cognitive deficits, particularly impacting fronto-striatal-cortical circuits.
  • Prospective memory (ProM), vital for daily functioning, relies heavily on these prefrontal-striatal networks.
  • ProM has not been previously investigated in individuals with HIV-1 infection.

Purpose of the Study:

  • To investigate prospective memory (ProM) performance in individuals with HIV-1 infection.
  • To compare ProM in HIV-1 positive participants versus demographically similar healthy controls.
  • To explore the relationship between ProM deficits and other cognitive functions in HIV-1.

Main Methods:

  • A cohort of 42 HIV-1 positive participants and 29 healthy controls (HC) were assessed.

Related Experiment Videos

  • Participants completed various ProM tasks, including time- and event-based assessments and a 24-hour delay recall.
  • Cognitive functions, including executive functions, episodic memory, and working memory, were evaluated using validated clinical measures.

    • Main Results:

    • The HIV-1 group showed significant impairments in time- and event-based ProM compared to HC.
    • HIV-1 participants exhibited more frequent 24-hour delay ProM failures and task substitution errors.
    • No significant differences in recognition memory were observed, suggesting intact retention when retrieval demands were low.

    Conclusions:

    • HIV-1 infection is associated with prospective memory (ProM) impairment.
    • The findings suggest ProM deficits in HIV-1 are driven by executive dysfunction in retrieving future intentions.
    • These results support a neuropathogenesis model involving fronto-striatal circuit dysfunction in HIV-1 associated cognitive decline.