Journal
HEARING RESEARCH
Volume 342, Issue -, Pages 144-149Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.heares.2016.10.012
Keywords
Memory; Consideration; Dichotic listening; Right ear advantage; Auditory cortex; Hemispheric asymmetry
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The role of memory retention and attentional control on hemispheric asymmetry was investigated using a verbal dichotic listening paradigm, with the consonant vowel syllables (/ba/,/da/,/ga/,/ka/,/pa/and/ta/), while manipulating the focus of attention and the time interval between stimulus and response. Attention was manipulated using three conditions: non-forced (NF), forced left (FL) and forced right (FR) attention. Memory involvement was varied using four delays (0, 1, 3 and 4 s) between stimulus presentation and response. Results showed a significant right ear advantage (REA) in the NF condition and an increased REA in the FR condition. A left ear advantage (LEA) was found in FL condition. The REA increased significantly in the NF attention condition at the 3-s compared to the 0-s delay and in the FR condition at the 1-s compared to the 0-s delay. No modulation of the left ear advantage was observed in the FL condition. These results are discussed in terms of an interaction between attentional processes and memory retention. (C) 2016 Elsevier B.V. All rights reserved.
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