alexa The Effects of Stimulus Complexity and Timing during Du
ISSN: 2375-4427

Journal of Communication Disorders, Deaf Studies & Hearing Aids
Open Access

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Research Article

The Effects of Stimulus Complexity and Timing during Dual Task across Neurologically- Healthy Older and Younger Adults: A Pilot Study

Jennine Harvey1*, Jonathan Wilson2, Megan Cuellar2 and Esperanza Anaya3

1Department of Communication Sciences and Disorders, Illinois State University, Campus Box 4720, Normal, IL, USA

2Department of Speech-Language Pathology Program, Midwestern University, Downers Grove IL, USA

3Health Service Psychology Program, Kansas City University of Medicine and Biosciences, Kansas City, MO, USA

*Corresponding Author:
Jennine Harvey
Assistant Professor, Communication Sciences and Disorders
Illinois State University, Campus Box 4720, Normal, IL 61790, USA
Tel: +309-438-4408
Fax: +309-438-5221
E-mail: [email protected]

Received date: May 09, 2017; Accepted date: May 30, 2017; Published date: June 02, 2017

Citation: Harvey J, Wilson J, Cuellar M, Anaya E (2017) The Effects of Stimulus Complexity and Timing during Dual Task across Neurologically-Healthy Older and Younger Adults: A Pilot Study. Commun Disord Deaf Stud Hearing Aids 5:173. doi:10.4172/2375-4427.1000173

Copyright: © 2017 Harvey J, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Dual task protocols are often used to assess the simultaneous performance of two tasks. However, the cognitive and perceptual load factors of empirically studied dual tasks often vary considerably. Thus, the current pilot study systematically investigated the effects of dual task constraints across varying levels of complexity, for three groups of neurologically healthy adults, by closely manipulating cognitive and perceptual load factors. Using a novel methodology, performance was measured during both simple and complex dual tasks that were systematically varied according to stimulus onset asynchrony and set size. The results revealed that set-size and stimulus onset asynchrony factors interact to significantly increase levels of dual task interference. The implications of key findings and potential future applications for this novel dual task protocol are further discussed.

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