Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2009 Jan;30(1):N1-10.
doi: 10.1088/0967-3334/30/1/N01. Epub 2008 Dec 22.

Design of a light stimulator for fetal and neonatal magnetoencephalography

J D Wilson  1 , A J Adams, P Murphy, H Eswaran, H Preissl
Affiliations

Design of a light stimulator for fetal and neonatal magnetoencephalography

J D Wilson et al. Physiol Meas. 2009 Jan.

Abstract

The design, safety analysis and performance of a fetal visual stimulation system suitable for fetal and neonatal magnetoencephalography studies are presented. The issue of fetal, neonatal and maternal safety is considered and the maximum permissible exposure is computed for the maternal skin and the adult eye. The risk for neonatal eye exposure is examined. It is demonstrated that the fetus, neonate and mother are not at risk.

PubMed Disclaimer

Figures

Figure 1
Figure 1
The woven fiber illumination pad and fiber optic cable.
Figure 2
Figure 2
The illumination pad place in position for a fetal study.
Figure 3
Figure 3
Interior of the electronics cabinet. The LED modules are mounted on an aluminum plate in the upper left of the photograph.
See this image and copyright information in PMC

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

References

    1. American National Standards Institute. Standard ANSI Z136.1-2007. Laser Institute of America; 2007. Safe Use of Lasers.
    1. Barkana Y, Belkin M. Laser Eye Injuries. Survey of Ophthalmology. 2000 May–June;44(6):459–478. - PubMed
    1. Baylor DA, Lamb TD, Yau KW. Response of retinal rods to single photons. J Physiol. 1979;288:613–634. - PMC - PubMed
    1. Bearden ED, Wilson JD, Zharov VP, Lowery CL. Deep Penetration of Light into Biotissue. Proceedings of SPIE. 2001;4257:417–425.
    1. Blum T, Saling E, Bauer R. First magnetoencephalographic recordings of the brain activity of the human fetus. Br J Obstet Gynaecol. 1985;92:1224–1229. - PubMed

Publication types