Dual task performance in hiv/aids

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J Clin Exp Neuropsychol. 2000 Feb;22(1):16-24.

Dual task performance in HIV-1 infection.

Hinkin CH, Castellon SA, Hardy DJ. Department of Psychiatry and

Biobehavioral Sciences, UCLA School of Medicine, CA 90024, USA.

chinkin@...

Fifty HIV-infected individuals and 20 uninfected controls participated

in an investigation of dual task performance in HIV-1 infection.

Participants first engaged in a simple auditory reaction time (RT) task

followed by a visual choice RT task (single task condition), and then they

simultaneously engaged in both tasks (dual task condition). Under single

task conditions, the HIV+ participants did not significantly differ from

controls on either simple or choice RT (though a trend was evident on single

task choice RT). In contrast, under dual task conditions the HIV+ group's

performance decrement, relative to controls, was significantly greater on

both simple and choice RT. This dual task decrement was also significantly

associated with slower performance on the interference condition of the

Stroop. Patients with AIDS tended to have greater dual task decrements than

did the pre-AIDS group, though this fell short of statistical significance.

These results suggest that HIV-1 infection leads to deficits in divided

attention and the simultaneous processing of competing stimuli, deficits

which have been linked to disruption of the anterior attentional system.

PMID: 10649542

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Found in CFIDS too...

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Sent: Sunday, April 19, 2009 9:32:51 AM

Subject: Dual task performance in hiv/aids

J Clin Exp Neuropsychol. 2000 Feb;22(1):16- 24.

Dual task performance in HIV-1 infection.

Hinkin CH, Castellon SA, Hardy DJ. Department of Psychiatry and

Biobehavioral Sciences, UCLA School of Medicine, CA 90024, USA.

chinkinucla (DOT) edu

Fifty HIV-infected individuals and 20 uninfected controls participated

in an investigation of dual task performance in HIV-1 infection.

Participants first engaged in a simple auditory reaction time (RT) task

followed by a visual choice RT task (single task condition), and then they

simultaneously engaged in both tasks (dual task condition). Under single

task conditions, the HIV+ participants did not significantly differ from

controls on either simple or choice RT (though a trend was evident on single

task choice RT). In contrast, under dual task conditions the HIV+ group's

performance decrement, relative to controls, was significantly greater on

both simple and choice RT. This dual task decrement was also significantly

associated with slower performance on the interference condition of the

Stroop. Patients with AIDS tended to have greater dual task decrements than

did the pre-AIDS group, though this fell short of statistical significance.

These results suggest that HIV-1 infection leads to deficits in divided

attention and the simultaneous processing of competing stimuli, deficits

which have been linked to disruption of the anterior attentional system.

PMID: 10649542