iScience (Sep 2022)

The Genetic contribution to solving the cocktail-party problem

  • Samuel R. Mathias,
  • Emma E.M. Knowles,
  • Josephine Mollon,
  • Amanda L. Rodrigue,
  • Mary K. Woolsey,
  • Alyssa M. Hernandez,
  • Amy S. Garrett,
  • Peter T. Fox,
  • Rene L. Olvera,
  • Juan M. Peralta,
  • Satish Kumar,
  • Harald H.H. Göring,
  • Ravi Duggirala,
  • Joanne E. Curran,
  • John Blangero,
  • David C. Glahn

Journal volume & issue
Vol. 25, no. 9
p. 104997

Abstract

Read online

Summary: Communicating in everyday situations requires solving the cocktail-party problem, or segregating the acoustic mixture into its constituent sounds and attending to those of most interest. Humans show dramatic variation in this ability, leading some to experience real-world problems irrespective of whether they meet criteria for clinical hearing loss. Here, we estimated the genetic contribution to cocktail-party listening by measuring speech-reception thresholds (SRTs) in 425 people from large families and ranging in age from 18 to 91 years. Roughly half the variance of SRTs was explained by genes (h2 = 0.567). The genetic correlation between SRTs and hearing thresholds (HTs) was medium (ρG = 0.392), suggesting that the genetic factors influencing cocktail-party listening were partially distinct from those influencing sound sensitivity. Aging and socioeconomic status also strongly influenced SRTs. These findings may represent a first step toward identifying genes for “hidden hearing loss,” or hearing problems in people with normal HTs.

Keywords