Implicit memory during balanced anaesthesia : lack of evidence

The effect of the number of presentations on implicit memory for words was studied in anaesthetised patients. During standardised, balanced anaesthesia, 81 surgical patients were presented with less common specimens of familiar word categories. For each of three word categories the number of word pr...

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Bibliographic Details
Published in:Anaesthesia 1993-08, Vol.48 (8), p.657-660
Main Authors: BONEBAKKER, A. E, BONKE, B, KLEIN, J, WOLTERS, G, HOP, W. C. J
Format: Article
Language:English
Subjects:
Adult
Aged
Anesthesia
Anesthesia, General
Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy
Biological and medical sciences
Female
General anesthesia. Technics. Complications. Neuromuscular blocking. Premedication. Surgical preparation. Sedation
Humans
Intraoperative Period
Male
Medical sciences
Memory
Mental Recall
Middle Aged
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Summary:The effect of the number of presentations on implicit memory for words was studied in anaesthetised patients. During standardised, balanced anaesthesia, 81 surgical patients were presented with less common specimens of familiar word categories. For each of three word categories the number of word presentations varied between the patients (0 (control), 5, or 30 presentations). Postoperatively, repetition priming was tested by asking patients to generate exemplars for each of the word categories. No implicit memory for the words presented during anaesthesia was found and consequently no effect of number of word presentations could be demonstrated. It is suggested that this finding, which contradicts previous results, may be caused by the relatively low familiarity of the words used.
ISSN:0003-2409
1365-2044
DOI:10.1111/j.1365-2044.1993.tb07172.x