Magnetoencephalographic recordings of visual evoked brain activity in the human fetus.
作者信息
Eswaran Hari, Wilson James, Preissl Hubert, Robinson Stephen, Vrba Jiri, Murphy Pam, Rose Douglas, Lowery Curtis
机构信息
Department of Obstetrics and Gynecology, University of Arkansas for Medical Sciences, 4301 W Markham, Slot 518, Little Rock, AR 72205, USA.
出版信息
Lancet. 2002 Sep 7;360(9335):779-80. doi: 10.1016/s0140-6736(02)09905-1.
We investigated the feasibility of recording visual evoked brain activity in the human fetus by use of non-invasive magnetoencephalography (MEG). Each recording lasted 6 min and consisted of a sequence of 180 flashes with 33 ms duration delivered 2 s apart over the maternal abdomen. Four of ten fetuses included showed a response; the ranges of amplitude and latency of peak response were 15-30 x 10(-15) Tesla and 180-390 ms, respectively. Six fetuses showed no discernible response. With improvement, this method could aid in the testing of fetal neurological status throughout pregnancy.
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