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Science News Archive May 2014 - Page 29


Page 29 of 31

New idea for hearing improvement in patients with hearing aids under background noise

Researchers investigated how neurons in the inferior colliculus respond to paired sounds producing precedence-effect illusions. Local gamma-aminobutyric acid application suppressed responses to lagging stimuli, providing a new approach for improving speech understanding in patients with hearing aids under background noise.

SourceNeural Regeneration Research·JournalNeural Regeneration Research·DateMay 4, 2014

Probing dopant distribution

Researchers have demonstrated that the distribution of dopants in semiconductor nanocrystals is crucial for controlling optical properties. By probing electron distribution using x-ray photoelectron spectroscopy, they found that surface-doped samples exhibit reduced activation of dopants and symmetric plasmon resonances.

SourceDOE/Lawrence Berkeley National Laboratory·JournalJournal of the American Chemical Society·DateMay 2, 2014