New paper in Trends in Hear­ing: Hear­ing aids add a demon­stra­ble amount of cog­ni­tive burden

A true Hoer­hanse col­labo: Markus Kem­per and our col­leagues from the Deutsche Hörg­eräte Insti­tut (DHI) show, with Jonas’ help, and using data acquired in our lab, that hear­ing aids do take their how­ev­er slight toll on the cog­ni­tive system: 

Despite the unques­tion­ably great help that hear­ing devices do pro­vide to those with impaired hear­ing, the tech­ni­cal noise and dig­i­tal sig­nal pro­cess­ing chain of hear­ing aids do ampli­fy mea­sur­ably the typ­i­cal sig­na­tures of effort­ful listening.

Espe­cial­ly the pupil dila­tion, hall­mark of increased locus coeruleus/noradrenergic activ­i­ty in response to sensory–cognitive chal­lenges, is notably more pro­nounced when lis­ten­ers respond to a stan­dard speech-intell­gi­bil­i­ty test (OLSA) while lis­ten­ing through a “trans­par­ent” (i.e., switched-on, but not ampli­fy­ing) hear­ing aid.

Out now in Trends in Hear­ing.