Brain Topography

, Volume 8, Issue 3, pp 291–296 | Cite as

Human middle latency auditory evoked magnetic fields

  • Takashi Yoshiura
  • Shoogo Ueno
  • Keiji Iramina
  • Kouji Masuda
Regular Papers


The magnetic equivalents of SN10, Po, Na, Pa, Nb and Pb (SN10m, Pom, Nam, Pam, Nbm and Pbm) in short and middle latency auditory evoked potentials were measured with a 7-channel DC superconducting quantum interference device (SQUID). The sources of Pom, Nam, Pam, Nbm and Pbm responses were estimated to be located in the auditory cortex, while the source of SN10m was considered to be in a deeper part of the brain. In addition, the source of Pam was estimated to be in the vicinity of the moving N100m source. The source of Pbm was considered to be in a separate area, anterior to the source of Pam and N100m, which suggested that the source of Pam was located in the primary auditory cortex, while the source of Pbm was located in the secondary auditory cortex. The source of N100m was considered to spread from the primary auditory cortex to the secondary auditory cortex.

Key words

Middle latency auditory evoked magnetic fields MLR AEFs MEG Human brain SQUID 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Cacace, A.T., Satya-Murti, S. and Wolpaw, J.R. Human middlelatency auditory evoked potentials: Vertex and temporal components. Electroenceph. clin. Neurophysiol., 1990, 77: 6–18.Google Scholar
  2. Celesia, G.G. Organization of auditory cortical area in man. Brain, 1976, 99: 403–414.Google Scholar
  3. Davis, H. and Hirsh, S.K. A slow brain stem response for low-frequency audiometry. Audiology, 1979, 18: 445–461.Google Scholar
  4. Deiber, M.P., Ibañez, V., Fischer, C., Perrin, F. and Maugiuére, F. Sequential mapping favors the hypothesis of distinct generators for Na and Pa middle latency auditory evoked potentials. Electroenceph. clin. Neurophysiol., 1988, 71: 187–197.Google Scholar
  5. Erwin, R. and Buchwald, J.S. Midlatency auditory evoked responses: Differential effects of sleep in the human. Electroenceph. clin. Neurophysiol., 1986, 65: 383–392.Google Scholar
  6. Hari, R., Aittoniemi, K., Järvinen, M.-L., Katila, T. and Varpula, T. Auditory evoked transient and sustained magnetic fields of the human brain. Exp. Brain Res., 1980, 40: 237–240.Google Scholar
  7. Hashimoto, I. Auditory evoked potentials from the human midbrain. Electroenceph. clin. Neurophysiol., 1982, 53: 652–657.Google Scholar
  8. Kuriki, S. and Takeuchi, F. Neuromagnetic responses elicited by auditory stimuli in dichotic listening. Electroenceph. clin. Neurophysiol., 1991, 80: 406–411.Google Scholar
  9. Lee, Y.S., Lueders, H, Dinner, D.S., Lesser, R.P., Hahn, J., Klem, G. Recording of auditory evoked potentials in man using chronic subdural electrodes. Brain, 1984, 107: 115–131.Google Scholar
  10. Pantev, C., Hoke, M., Lehnertz, K., Lütkenhöner, B., Anogianakis, G. and Wittkowski, W. Tonotopic organization of the human auditory cortex revealed by transient auditory evoked magnetic fields. Electroenceph. clin. Neurophysiol., 1988, 69: 160–170.Google Scholar
  11. Pantev, C., Hoke, M., Lehnertz, K. and Lütkenhöner, B. Neuromagnetic evidence of an amplotopic organization of the human auditory cortex. Electroenceph. clin. Neurophysiol., 1989, 72: 225–231.Google Scholar
  12. Pelizzone, M, Hari, R., Mäkelä, J.P., Huttunen, J., Ahlfors, S., Hämäläinen, M. Cortical origin of middle-latency evoked responses in man. Neuroscience Letters, 1987, 82: 303–307.Google Scholar
  13. Picton, T.W., Hillyard, S.A., Krausz, H.I. and Galambos, R. Human auditory evoked potentials. I. Evaluation of components. Electroenceph. clin. Neurophysiol., 1974, 36: 179–190.Google Scholar
  14. Rogers, R.L., Papanicolaou, A.C., Baumann, S.B., Saydjari, C., Eisenberg, H.M. Neuromagnetic evidence of a dynamic excitation pattern generating the N100 auditory response. Electroenceph. clin. Neurophysiol., 1990, 77: 237–240.Google Scholar
  15. Scherg, M. and von Cramon, D. Evoked dipole source potential of the human auditory cortex. Electroenceph. clin. Neurophysiol., 1986, 65: 344–360.Google Scholar
  16. Scherg, M., Hari, R. and Hämäläinen, M. Frequency-specific sources of the auditory N19-P30-P50 response detected by a multiple source analysis of evoked magnetic fields and potentials. In: S.J. Williamson, M. Hoke, G. Stroink and M. Kotani (Eds.), Advances in Biomagnetism. Plenum Press, New York, 1989: 97–100.Google Scholar
  17. Woods, D.L., Clayworth, C.C., Knight, R.T., Simpson, G.V. and Naeser, M. A. Generators of middle-and long-latency auditory evoked potentials: Implications from studies of patients with bitemporal lesions. Electroenceph. clin. Neurophysiol., 1987, 68: 132–148.Google Scholar
  18. Yamamoto, T., Williamson, S.J., Kaufman, L., Nicholson, C. and Linas, R. Magnetic localization of neuronal activity in the human brain. Proc. Natl. Acad. Sci. (USA), 1988, 85: 8732–8736.Google Scholar

Copyright information

© Human Sciences Press, Inc 1996

Authors and Affiliations

  • Takashi Yoshiura
    • 1
  • Shoogo Ueno
    • 2
  • Keiji Iramina
    • 3
  • Kouji Masuda
    • 1
  1. 1.Department of Radiology Faculty of MedicineKyushu UniversityFukuokaJapan
  2. 2.Institute of Medical Electronics, Faculty of MedicineUniversity of TokyoTokyoJapan
  3. 3.Department of Computer Science and Communication Engineering, Faculty of EngineeringKyushu UniversityFukuokaJapan

Personalised recommendations