Restitution of neurophysiological functions, performance, and subjective symptoms after moderate insulin-induced hypoglycaemia in non-diabetic men
1996 (English)In: Diabetic Medicine, ISSN 0742-3071, E-ISSN 1464-5491, Vol. 13, no 3, p. 218-25Article in journal (Refereed) Published
Abstract [en]
The restoration of cognitive function was studied in 10 healthy men aged 26 years (25.5 +/- 1.2 years; mean +/- SD) after insulin-induced hypoglycaemia (arterialized blood glucose 2.5 +/- 0.4 mmol l-1) for 62 +/- 8 min. Another group of six men participated in a single blind sham study for comparison. The hypoglycaemic event caused a significant increase (p = 0.006) in serum adrenaline levels. Ratings of adrenergically mediated symptoms increased during hypoglycaemia (p = 0.006), as did neuroglycopenic symptoms (p = 0.002), although neuroglycopenia ratings increased in both studies. During hypoglycaemia, P300 amplitudes in a relatively demanding visual search task decreased (p = 0.02), whereas easier tasks were unaffected. The amplitudes were restored after 40 min of normoglycaemia. Reaction time deteriorated after restoration of normoglycaemia, suggesting an effect of hypoglycaemia on learning. Thus, hypoglycaemia at a blood glucose level that is common among patients treated with insulin causes clear cognitive dysfunction, although restoration of the cognitive dysfunction to normal was fast.
Place, publisher, year, edition, pages
1996. Vol. 13, no 3, p. 218-25
Keywords [en]
Adult, Analysis of Variance, Blood Glucose/drug effects/metabolism, Cognition/*drug effects, Comparative Study, Electroencephalography/*drug effects, Epinephrine/*blood, Evoked Potentials, Auditory/drug effects, Evoked Potentials, Visual/drug effects, Human, Hypoglycemia/blood/chemically induced/*physiopathology, *Insulin/administration & dosage/pharmacology, Male, Reaction Time/drug effects, Reference Values, Single-Blind Method, Support, Non-U.S. Gov't
National Category
Psychology (excluding Applied Psychology) Social Sciences
Identifiers
URN: urn:nbn:se:hkr:diva-647DOI: 10.1002/(SICI)1096-9136(199603)13:3<218::AID-DIA25>3.0.CO;2-DISI: A1996UA49800003OAI: oai:DiVA.org:hkr-647DiVA, id: diva2:209074
2009-03-232009-03-202017-12-13Bibliographically approved