Author/Authors :
Hari Eswaran، نويسنده , , James D Wilson، نويسنده , , Hubert Preissl، نويسنده , , Stephen R. Robinson، نويسنده , , Jiri Vrba، نويسنده , , Pam Murphy، نويسنده , , Douglas F Rose، نويسنده , , Curtis L. Lowery، نويسنده ,
Abstract :
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 15–30×10−15 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.
