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Effects of dietary boron and magnesium on brain function of mature male and female Long-Evans rats

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The electrocorticogram (ECoG) was recorded from 74 mature (175-day-old) male and female Long-Evans rats following 75 days consumption of one of four diets resulting from the factorial combination of apprx 0 and 3 mu-g boron (B)/g diet crossed with 100 and 300 mu-g magnesium (Mg)/g diet. Effectiveness of the dietary manipulation was verified by the determination of femur mineral concentrations. Spectral analysis (with 1 Hz resolution) of the ECoG showed decreased amplitude in the higher (7-12 Hz) frequencies and increased proportion of total amplitude in the lower (4 and 5 Hz) frequencies in both the left and right hemispheres of rats fed the low B diets. Mg was not significantly related to brain electrical activity, and there were no significant interactions between B and Mg with respect to the ECoG measures. Results indicate that dietary B systematically influences brain electrical activity in mature rats and suggest that the principal effect of manipulating B intake is one the relative distribution of activity among frequencies. Thus, B may play an important role in the maintenance of brain activation.
Penland, James G. , Eberhardt, Marilou J.
Includes references
Journal of trace elements in experimental medicine 1993, v. 6
Journal Articles, USDA Authors, Peer-Reviewed
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