Jafari Z, Aghamollaei1 M, Toufan R, Esmaili1 M, Rahimzadeh S, AsadMalayeri S. Effects of Handedness and Gender on Auditory Attention in Bergen Dichotic Listening. Advances in Cognitive Sciences 2012; 14 (1) :1-10
URL:
http://icssjournal.ir/article-1-421-en.html
1- Tehran University of Medical Sciences Faculty of Rehabilitation, Tehran, Iran.
2- University of Social and Welfare Rehabilitation Sciences, Tehran, Iran.
Abstract: (3028 Views)
Objective: The effects of handedness and sex were studied by Bergen Dichotic listening test that measures both divided and selective attentions.
Method: Persian version of the Bergen dichotic listening test was used to evaluate non-forced attention, attention to right and attention to left ears on 75 young adults including 54 right-handed and 21 left handed individuals with normal hearing in age range of 18 to 30 years old.
Results: Right ear advantage (REA) with mean score of 78.4% and 94.7% in the two conditions of non-forced attention and attention to the right ear, and left ear advantage (LEA) with mean score of 81.3% in attention to the left ear were obtained. Sex had no effect on the results, but significant difference was found between right and left hand people in non-forced attention and attention to the right (p<0.029).
Conclusion:Top-down processing of brain cortex in selective attention modulated bottom-up processing in divided attention task by change of right ear advantage. Our results showed the application of Bergen dichotic listening test to evaluate auditory attention, language laterality and handedness.
Type of Study:
Research |
Subject:
Special Received: 2011/11/22 | Accepted: 2012/01/21 | Published: 2012/03/20