The Effect of Age on Attentional Modulation in Dichotic Listening



: Takio F., Koivisto M., Jokiranta L., Rashid F., Kallio J., Tuominen T., Laukka S.J., Hämäläinen H.

Publisher: PSYCHOLOGY PRESS

: 2009

: Developmental Neuropsychology

: DEVELOPMENTAL NEUROPSYCHOLOGY

: DEV NEUROPSYCHOL

: PII 910997970

: 34

: 3

: 225

: 239

: 15

: 8756-5641

DOI: https://doi.org/10.1080/87565640902805669


The right-ear advantage (REA) in Dichotic listening (DL) reflects stimulus-driven bottom-up asymmetry in speech processing. The REA can be modified by top-down attentional control. We investigated attentional control in DL task as a function of age. A total of 186 participants between the ages of 5 and 79 years were tested. The youngest children demonstrated a REA that was not modified by attention, suggesting that bottom-up functional asymmetry was present. The 10-11-year-olds began to show ability to voluntarily modify DL, but only young adults were fully capable of doing so. In 59-79-year-olds, this top-down attentional control was lost again.



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