Dual-Task Cost in Bilateral Hearing Loss

The average speed of gait and spatiotemporal gait parameters would be calculated by the APDM, inertial motion units. Participants will walk in their normal speed for 1 minute along a corridor, back and forth, with or without performing a cognitive task (single or DT). The DT condition will include serial subtraction (counting backwards out loud) in jumps of 3 from a random three-digit number. Randomization of numbers will be done using the excel function generating random numbers (Excel RAND function). The numbers will be recorded for offline processing and the outcome will be the number of correct numbers. Each condition will be performed once, and all conditions will be randomized.

Participants will complete a computerized cognitive battery (CNS vital sign; CNSVS)that will include verbal memory, visual memory, Stroop test, shifting attention and 4-part continuous performance (sustained attention and working memory). Moreover, performance on the single cognitive task (serial subtraction in jumps of 3; measuring working memory and executive function) will also be evaluated while sitting (cognitive single task). The numbers will be recorded for offline processing and the outcome will be the number of correct numbers. These tests do not require the ability to hear in order to pass successfully. Also, there is a need for investigation of cognitive domains such as attention, memory, executive function, and cognitive flexibility in people with HL.