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May 25, 2011, Vol 305, No. 20 >

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Letters | May 25, 2011

Cell Phone Activation and Brain Glucose Metabolism—Reply

Nora D. Volkow, MD; Dardo Tomasi, PhD; Paul Vaska, PhD
JAMA. 2011;305(20):2066-2068. doi:10.1001/jama.2011.672.
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In Reply: Our study showed that cell phone activation was associated with metabolic increases in brain regions closest to the antenna and that the increases showed a negative linear correlation with distance from the antenna. In their letter, Dr Kosowsky and colleagues point out that realistic RF-EMF models are likely more complex than the model we used. The assumptions about the model are only relevant in interpreting the spatial distribution of the observed effect, but they have no impact on the significance of the effect itself. Furthermore, the narrow range of distances to the antenna in our study (9-11 cm) suggests that a first-order Taylor approximation for any potential RF-EMF model might be sufficiently accurate. The observed linear decrease in the metabolic effect with distance is consistent with this.

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Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

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May 25, 2011
Cell Phone Activation and Brain Glucose Metabolism
Christopher C. Davis, PhD; Quirino Balzano, PhD
JAMA. 2011;305(20):2066-2068. doi:10.1001/jama.2011.670.
May 25, 2011
Cell Phone Activation and Brain Glucose Metabolism
Arthur Kosowsky, PhD; Eric Swanson, PhD; Edward Gerjuoy, PhD
JAMA. 2011;305(20):2066-2068. doi:10.1001/jama.2011.669.
May 25, 2011
Cell Phone Activation and Brain Glucose Metabolism
Carl-Henrik Nordström, MD, PhD
JAMA. 2011;305(20):2066-2068. doi:10.1001/jama.2011.671.
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