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Multi-task prioritization during the performance of a postural-manual and communication task.
Kara L Simon-Kuhn1, Jeffrey M Haddad2, Jessica E Huber1
1Department of Speech, Language, and Hearing Sciences, Purdue University, Lyles-Porter Hall, 715 Clinic Dr., West Lafayette, IN, 47907, USA.
Experimental Brain Research
|January 23, 2019
Summary
Young adults performing speech and a postural-manual task simultaneously typically prioritize clear communication. They adjust their movements and reduce accuracy in the manual task to ensure effective speech generation.
Area of Science:
- Human motor control
- Cognitive neuroscience
- Task prioritization
Background:
- Simultaneous task performance is common in daily life (e.g., walking and talking).
- Previous research focused on cognitive tasks during standing, but less on prioritizing multiple goal-directed tasks.
- Understanding task prioritization is crucial for explaining complex human behaviors.
Purpose of the Study:
- To investigate how young adults prioritize task performance when faced with dual-tasking.
- Specifically, to examine prioritization between speech generation (communication) and a postural-manual task during standing.
Main Methods:
- Fifteen young adult females participated.
- Four conditions involved a postural-manual task (holding a block in an opening) performed quietly and while talking.
- A control condition of speech while standing was also included.
Main Results:
- Participants generally prioritized accurate communication over the postural-manual task.
- This prioritization was evident through adjustments in manual and postural strategies.
- Manual task accuracy was decreased when participants were also required to speak.
Conclusions:
- Young adults demonstrate a clear prioritization of communication when performing speech and a postural-manual task concurrently.
- Motor and postural strategies are adapted to support the primary goal of clear speech.
- This finding highlights the brain's resource allocation mechanisms during dual-tasking.
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