(Kuhmonen) Graduate student, Department of Neurology, University of Kuopio, Kuopio, Finland.
(Pokorny) Associate Professsor of Physiology, Charles University of Prague, Prague, Czech Republic.
(Miettinen) Research fellow, Department of Neurology, University of Kuopio, Kuopio, Finland.
(Haapalinna) Head of Research Team, Orion Corporation, Orion Pharma, Turku, Finland.
(Jolkkonen) Research fellow, A.I. Virtanen Institute, University of Kuopio, Kuopio, Finland.
(Riekkinen) Professor of Neuroscience, Department of Neurology, University of Kuopio, Kuopio, Finland.
(Sivenius) Associate Professor of Neurology, Department of Neurology, University of Kuopio and Brain Research and Rehabilitation Center Neuron, Kuopio, Finland.
Received from the Department of Neurology, University of Kuopio, Kuopio, Finland. Submitted for publication: January 20, 1997. Accepted for publication March 27, 1997.
Address reprint requests to Dr. Sivenius: Department of Neurology, University Hospital of Kuopio, 70210 Kuopio, Finland. Address electronic mail to: juhani.sivenius@uku.fi.