A signal processing component to Broca's aphasia functor deficits

  • Harris R
  • Stanford L
  • Campbell T
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Abstract

We conducted a modified replication of K.M. Heilman and R.J. Scholes [Cortex 12, 258-265, 1976] test of functor comprehension in aphasia, controlling the acoustic dimensions of the key function words: 9 Broca patients heard 4 sentence pairs differing only in the post-verb placement of the. They made forced choices between 4 line drawings: one which depicted the correct action, one which depicted the action of the other member in the pair, and two which contained depictions of different figures and actions altogether. Each of the 8 sentences was played in 2 conditions: one with NORMAL intonation, and another with an acoustically more SALIENT post-verbal the. Both of Heilman and Scholes' principal results were successfully replicated, and a SALIENT effect was also discovered, supporting a signal processing component to the Broca syndrome functor deficit. © 1989.

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Authors

  • R. Allen Harris

  • Lois Marckworth Stanford

  • Thomas F. Campbell

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