Continuous ICV infusion of scopolamine impairs sustained attention of rhesus monkeys

M. J. Callahan, J. J. Kinsora, Robert Harbaugh, T. M. Reeder, R. E. Davis

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Systemic administration of anticholinergic agents impairs cognitive performance in animals and man. The anticholinergic, scopolamine, has profound effects on peripheral and central cholinergic function, making interpretation of its effects on cognitive performance difficult. To circumvent this problem, scopolamine was administered directly to the central nervous system of rhesus monkeys using a subcutaneously implanted infusion pump connected to a cannulae directed toward the right lateral ventricle. Intracerebroventricular (ICV) infusion of scopolamine (0.004, 0.012, 12.5, and 40.0 μg/kg/h) produced a dose-dependent decrease in the number of responses on a continuous performance task. Response decrements produced by scopolamine were seen mainly during the last half of the test session and at short stimulus durations. These data suggest that scopolamine produces a deficit in sustained attention or slowing of information processing that is mediated through direct central cholinergic blockade in the rhesus monkey.

Original languageEnglish (US)
Pages (from-to)147-151
Number of pages5
JournalNeurobiology of Aging
Volume14
Issue number2
DOIs
StatePublished - Jan 1 1993

Fingerprint

Intraventricular Infusions
Scopolamine Hydrobromide
Macaca mulatta
Cholinergic Antagonists
Cholinergic Agents
Infusion Pumps
Lateral Ventricles
Task Performance and Analysis
Automatic Data Processing
Heart Ventricles
Central Nervous System

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)
  • Aging
  • Clinical Neurology
  • Developmental Biology
  • Geriatrics and Gerontology

Cite this

Callahan, M. J. ; Kinsora, J. J. ; Harbaugh, Robert ; Reeder, T. M. ; Davis, R. E. / Continuous ICV infusion of scopolamine impairs sustained attention of rhesus monkeys. In: Neurobiology of Aging. 1993 ; Vol. 14, No. 2. pp. 147-151.
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Continuous ICV infusion of scopolamine impairs sustained attention of rhesus monkeys. / Callahan, M. J.; Kinsora, J. J.; Harbaugh, Robert; Reeder, T. M.; Davis, R. E.

In: Neurobiology of Aging, Vol. 14, No. 2, 01.01.1993, p. 147-151.

Research output: Contribution to journalArticle

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