Magnetic detection of sleep spindles in normal subjects

N. Nakasato, H. Kado, M. Nakanishi, M. Koyanagi, N. Kasai, H. Niizuma, T. Yoshimoto

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


The magnetoencephalogram (MEG) and electroencephalogram (EEG) were recorded simultaneously from 3 normal subjects during light sleep. The extracranial magnetic field patterns associated with the ionic currents within the brain (MEG) were measured using a SQUID magnetometer in a magnetically shielded room. Although a previous report indicated that there are few sleep spindles in MEG records, we observed many in all 3 subjects. We believe this is because measurements were made vertically at the vertex region.

Original languageEnglish
Pages (from-to)123-130
Number of pages8
JournalElectroencephalography and Clinical Neurophysiology
Issue number2
Publication statusPublished - 1990 Aug


  • Electroencephalography
  • Magnetoencephalography
  • Sleep
  • Sleep spindles


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