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Functional Maps of Fetal Brain Activity Created Using fMRI

February 26th, 2013 Medgadget Editors Neurology, Radiology

MRI-study-of-a-pregnant-volunteerResearchers from Wayne State University and the Eunice Kennedy Shriver National Institute of Child Health and Human Development of the NIH reported the successful mapping of the functional connectivity (FC) networks of fetal brains. Using resting state functional MRI (fMRI) techniques, the team imaged 25 pregnant women during the second and third trimesters. With these techniques, researchers are for the first time able to observe the networks within the brain as they develop.

Several challenges had to be overcome in order to obtain the data, one of the important of which was fetal movement. Only data acquired in between movement could be used, the remaining 41% of the data was discarded. The researchers were able to map activity in 80 different regions of the brain and measure the levels of connectivity between the regions.

fetal-functional-connectivity-map

The statistical group connectivity map for 25 fetuses ages 24-38 weeks is shown in red-yellow hues on a reference MRI anatomical image from a single 32 week fetal study participant. Areas demonstrating the strongest functional connectivity are shown in bright yellow; all colored areas showed statistical connectivity at a threshold of p < .001, corrected for multiple comparisons.

The team hopes that such imaging will develop into practical methods of studying the development of brain disorders, especially those that affect children like autism and ADHD.

From the study abstract in Science Translational Medicine:

Significant bilateral connectivity was evident in half of the 42 areas tested, and the strength of FC between homologous cortical brain regions increased with advancing gestational age. We also observed medial to lateral gradients in fetal functional brain connectivity. These findings improve understanding of human fetal central nervous system development and provide a basis for examining the role of insults during fetal life in the subsequent development of disorders in neural FC.

Study abstract in Science Translational Medicine: Cross-Hemispheric Functional Connectivity in the Human Fetal Brain

Press release: WSU neuroscientists capture brain connectivity in human fetuses

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Medical technologies transform the world! Join us and see the progress in real time. At Medgadget, we report the latest technology news, interview leaders in the field, and file dispatches from medical events around the world since 2004.

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