Preparatory Processes and Compensatory Effort in Older and Younger Participants in a Driving-Like Dual Task

This study seeks to clarify some specific contributions of sensory input, working memory demands, and/or coordination of motor responses to age-related dual-task interference. Younger (mean age=25.5 years) and older (mean age=64.5 years) participants performed a driving-like tracking task and a visually cued attention task. Behavioral and electroencephalogram data were recorded during the performance of the task. Results show that overall tracking performance was lower for the older versus younger participants. This age-related decline was particularly pronounced in the time interval after the stimulus when the attention task demanded a motor response. Older participants tracked relatively better than the younger participants in the time interval preceding the stimulus. Older participants showed increased responses times and rates of false alarms and misses than younger participants in the attention task, suggesting a deficit in retaining the context in the cue-stimulus interval. The electroencephalogram data suggest that the older participants invested more resources than the younger participants in dual-task management during the cue-stimulus interval. The findings indicate that older drivers may experience increased motor interference during a dual task, deficient cue context processing and an increased investment of processing resources. These findings have implications for the design of in-vehicle information systems.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 91-102
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01345800
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Jul 28 2011 2:31PM