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Article (Scientific journals)
Auditory evoked potentials in the assessment of central nervous system effects of antimigraine drugs.
Roon, K. I.; Sandor, P. S.; Schoonman, G. G. et al.
1999In Cephalalgia, 19 (10), p. 880-5
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Keywords :
Adolescent; Adult; Cerebral Cortex/drug effects/physiology; Evoked Potentials, Auditory/drug effects; Female; Humans; Indoles/pharmacology; Male; Oxazoles/pharmacology; Oxazolidinones; Piperidines/pharmacology; Reproducibility of Results; Sample Size; Serotonin Agonists/pharmacology; Tryptamines
Abstract :
[en] Because the "intensity dependence" of cortical auditory evoked potentials (IDAP) is under serotonergic control, it can be used to assess central antimigraine effects of 5HT1B/1D agonists. We measured IDAP before and 2 h after naratriptan (5 mg, n = 19) and zolmitriptan (5 mg, n = 19) in healthy volunteers. IDAP was expressed as the amplitude-stimulus intensity function ("ASF slope"). Naratriptan tended to increase ASF slope (mean difference 0.23 +/- 0.62 microV/10 dB, p = 0.06) while zolmitriptan (0.08 +/- 0.95 microV/10 dB, p = 0.35) did not. We assessed the suitability of IDAP for measuring central antimigraine drug effects using repeatability data (see companion paper). We calculated the trade-off between the size of the expected drug effects (ASF slope difference) and the necessary sample size. Because of poor repeatability 36 to 80 subjects are required to detect ASF slope changes in the 0.25-0.5 microV/10 dB range. These data can be used to design trials using IDAP.
Disciplines :
Neurology
Neurosciences & behavior
Author, co-author :
Roon, K. I.
Sandor, P. S.
Schoonman, G. G.
Lamers, F. P.
Schoenen, Jean  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Neuro-anatomie
Ferrari, M. D.
van Dijk, J. G.
Language :
English
Title :
Auditory evoked potentials in the assessment of central nervous system effects of antimigraine drugs.
Publication date :
1999
Journal title :
Cephalalgia
ISSN :
0333-1024
eISSN :
1468-2982
Publisher :
Blackwell Science, Osney Mead Oxford, United Kingdom
Volume :
19
Issue :
10
Pages :
880-5
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 September 2009

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