Acute effects of caffeine on selective attention and visual search processes.

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  • Author(s): Lorist MM;Lorist MM; Snel J; Kok A; Mulder G
  • Source:
    Psychophysiology [Psychophysiology] 1996 Jul; Vol. 33 (4), pp. 354-61.
  • Publication Type:
    Clinical Trial; Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Blackwell Country of Publication: United States NLM ID: 0142657 Publication Model: Print Cited Medium: Print ISSN: 0048-5772 (Print) Linking ISSN: 00485772 NLM ISO Abbreviation: Psychophysiology Subsets: MEDLINE
    • Publication Information:
      Publication: Malden, MA : Blackwell
      Original Publication: Baltimore, Williams & Wilkins.
    • Subject Terms:
      Attention/*drug effects ; Caffeine/*pharmacology ; Central Nervous System Stimulants/*pharmacology ; Visual Perception/*drug effects; Adult ; Caffeine/pharmacokinetics ; Central Nervous System Stimulants/pharmacokinetics ; Evoked Potentials/drug effects ; Female ; Humans ; Male ; Photic Stimulation
    • Abstract:
      The influence of a single dose of caffeine was evaluated in focused and divided attention conditions of a visual selective search task in which subjects had to perform controlled search processes to locate a target item. Search processes were manipulated by varying display load. A dose of 3 mg/kg body weight caffeine or lactose, dissolved in a cup of decaffeinated coffee, was administered double blindly and deceptively to overnight abstinent coffee drinkers. Behavioral measures were supplemented by event-related potentials (ERPs). Subjects reacted faster in the caffeine condition. The P3b peak latency decreased after caffeine in the low display load condition and in the focused attention condition, indicating that the effects of caffeine are dependent on the number of relevant display items, not on the total number of display items presented. Search processes, as reflected in a negative ERP deflection, were not affected by caffeine.
    • Accession Number:
      0 (Central Nervous System Stimulants)
      3G6A5W338E (Caffeine)
    • Publication Date:
      Date Created: 19960701 Date Completed: 19961004 Latest Revision: 20190830
    • Publication Date:
      20240104
    • Accession Number:
      10.1111/j.1469-8986.1996.tb01059.x
    • Accession Number:
      8753934