Visual evoked magnetic fields to flash and pattern in 100 normal subjects

Armstrong, Richard A., Slaven, A. and Harding, G.F. (1991). Visual evoked magnetic fields to flash and pattern in 100 normal subjects. Vision Research, 31 (11), pp. 1859-1864.

Abstract

The practicality of recording visual evoked magnetic fields in 100 subjects 15-87 yr of age using a single channel d.c. SQUID second order gradiometer in an unshielded environment was investigated. The pattern reversal response showed a major positive component between 90 and 120 msec (P100M) while the response to flash produced a major positive component between 90 and 140 msec (P2M). Latency norms of the P100M were more variable than the corresponding P100 and P2 visual evoked potentials. The latency of the P100M may show a steep increase with age in most subjects after about 55 yr whereas only a small trend of latency with age was detected for the flash P2M.

Publication DOI: https://doi.org/10.1016/0042-6989(91)90180-D
Divisions: Life & Health Sciences > Optometry
Life & Health Sciences > Ophthalmic Research Group
Life & Health Sciences
Uncontrolled Keywords: neuromagnetism,norms,flash,pattern reversal,age
Published Date: 1991
Authors: Armstrong, Richard A. ( 0000-0002-5046-3199)
Slaven, A.
Harding, G.F.

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