Impaired discourse gist and working memory in children after brain injury

Brain Lang. 2006 May;97(2):178-88. doi: 10.1016/j.bandl.2005.10.002. Epub 2005 Nov 8.

Abstract

Emerging evidence suggests that a traumatic brain injury (TBI) in childhood may disrupt the ability to abstract the central meaning or gist-based memory from connected language (discourse). The current study adopts a novel approach to elucidate the role of immediate and working memory processes in producing a cohesive and coherent gist-based text in the form of a summary in children with mild and severe TBI as compared to typically developing children, ages 8-14 years at test. Both TBI groups showed decreased performance on a summary production task as well as retrieval of specific content from a long narrative. Working memory on n-back tasks was also impaired in children with severe TBI, whereas immediate memory performance for recall of a simple word list in both TBI groups was comparable to controls. Interestingly, working memory, but not simple immediate memory for a word list, was significantly correlated with summarization ability and ability to recall discourse content.

MeSH terms

  • Adolescent
  • Brain Injuries / complications*
  • Brain Injuries / physiopathology
  • Case-Control Studies
  • Chi-Square Distribution
  • Child
  • Cognition Disorders / etiology*
  • Cognition Disorders / physiopathology
  • Female
  • Humans
  • Linear Models
  • Linguistics
  • Male
  • Memory*
  • Mental Processes / physiology*
  • Neuropsychological Tests
  • Severity of Illness Index
  • Speech Disorders / etiology*
  • Speech Disorders / physiopathology
  • Speech Production Measurement
  • Verbal Behavior