Key points are not available for this paper at this time.
Cognitive Neurophysiology Research Group R2-01, Department of Clinical Neuroscience, Karolinska Institute, 171 76 Stockholm, Sweden ∗Corresponding author. Tel.: +46-8-51774781; fax: +46-8-344146 E-mail: email protected Submitted November 7, 2001; accepted November 15, 2001.
Petrović et al. (Tue,) studied this question.