Hearing
Cognitive ability tied to understanding speech in noisy settings, study finds
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Among people with clinically normal hearing, intellectual ability strongly predicted how well they understood speech amid competing voices, according to a peer-reviewed study from University of Washington researchers.
Researchers at Concordia University have discovered that people blink less when concentrating on speech amid background noise, highlighting a link between eye behavior and cognitive effort. This pattern persists regardless of lighting conditions, suggesting it's driven by mental demands rather than visual factors. The findings, published in Trends in Hearing, could offer a simple way to measure brain function during listening tasks.
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A 67-million-year-old fossil fish discovered in Alberta, Canada, has led UC Berkeley researchers to revise the evolutionary timeline of otophysan fish, revealing that their advanced hearing system developed in the ocean before two separate migrations to freshwater. This group, which includes over 10,000 species like catfish and zebrafish, evolved sensitive ears rivaling human hearing capabilities. The findings challenge long-held assumptions about their origins.