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Updated: Jun 3, 2025
Assessment of Cerebral Lateralization in Children using Functional Transcranial Doppler Ultrasound fTCD
Published on: September 27, 2010
Click Ordering Lateralization Test: Applicability and feasibility of a new paradigm for assessing sound
Elizabeth Della Colette1, Carlos Alberto Leite Filho1, Camila Maia Rabelo1
1Department of Physical Therapy, Speech-Language Pathology and Occupational Therapy, Medical School, University of São Paulo, São Paulo, 05360-160, Brazil.
Objective:
the present study aimed to investigate the applicability and feasibility of a new paradigm for assessing sound lateralization behavior.
Design:
The Click Ordering Lateralization Test comprises two tracks (tracks 1 and 2), with 54 trials each. Each trial consists of one of nine intervals ranging from 0 to 230 ms between two noise bursts, whereby subjects must indicate on which side they first heard the noise. The COLT procedure was applied to 30 normal-hearing children (between 8 and 14 years old).
Results:
the results indicated that an interaural time difference (ITD) of 0 ms functions as a control item, and after an ITD of 170 ms, the lateralization threshold reaches a ceiling effect. Different analysis methods were investigated in this study, with the total percentage score and a lateralization threshold of 5 hits deemed the most reliable methods. No differences were observed between test tracks and performance across the tracks was shown to be reliable and equivalent.
Conclusions:
there are few procedures available to assess sound laterization in a clinical setting. This study presents the COLT as an easy-to-apply, reliable test for use in children aged between 8 and 14 years old.
