Tag: "echo" at biology news
A probe, not an echo
...n transmission mode, rather than the commonly used echo
mode, to create the 3-D image. He explains that i...ny fraction of the transmitted sound comes back as echo
on soft tissues, while a much larger fraction (about 2000 times bigger) is transmitted through the s...
Aggression-related gene weakens brain's impulse control circuits
...a that was most reduced in volume. The findings echo
those of a 2005 NIMH study** showing how another serotonin-related gene variant shapes the same mood-regulating circuit. In this study also, the gene version that boosts serotonin levels resulted in impaired emotion-related lower brain structures, in...
Higher carbon dioxide, lack of nitrogen limit plant growth
...of NSF's LTER program, "Results from this research echo
those of other studies of nitrogen's importance to trees and agricultural crops. In the future, the effects of rising carbon dioxide on plants may become common throughout the world." The Minn. study, with its range of species, provides a broad test...