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Effect of Number of Graphic Symbols, Levels, and Listening Conditions on Symbol Identification and Latency in Persons with Aphasia.

This study investigated the ability of persons with aphasia to complete a series of experimental tasks involving single symbol and subject-verb-object sentence identification on a speech-generating device (SGD) in the presence/absence of competing stimuli. In all, 10 persons with Broca's aphasia and...

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Published in:AAC: Augmentative & Alternative Communication Vol. 30; no. 1; pp. 40 - 55
Main Authors: Petroi, Diana, Koul, Rajinder K., Corwin, Melinda
Format: research tables/charts Journal Article
Published: Taylor & Francis Ltd Mar2014
Online Access:View this record in EBSCOhost
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      dt: Mar2014
      vid: 30
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      pub: Taylor & Francis Ltd
      place: Philadelphia, Pennsylvania
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        10.3109/07434618.2014.882984
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        atl: Effect of Number of Graphic Symbols, Levels, and Listening Conditions on Symbol Identification and Latency in Persons with Aphasia.
      aug:
        au:
          Petroi, Diana
          Koul, Rajinder K.
          Corwin, Melinda
        affil: Department of Neurology, Division of Speech Pathology, Mayo Clinic, Rochester, Minnesota, USA
      sug:
        subj:
          Aphasia, Broca
          Alternative and Augmentative Communication
          Emblems and Insignia
          Task Performance and Analysis
          Human
          Texas
          Graphics
          Language Tests
          Adult
          Middle Age
          Aged
          Descriptive Statistics
          Visual Analog Scaling
          Repeated Measures
          Analysis of Variance
          Chi Square Test
          Multivariate Analysis of Variance
          Post Hoc Analysis
          Pearson's Correlation Coefficient
          Funding Source
          Adult: 19-44 years
          Middle Aged: 45-64 years
          Aged: 65+ years
      ab: This study investigated the ability of persons with aphasia to complete a series of experimental tasks involving single symbol and subject-verb-object sentence identification on a speech-generating device (SGD) in the presence/absence of competing stimuli. In all, 10 persons with Broca's aphasia and 10 persons in the control group were compared on accuracy and response latency of symbol identification across three listening conditions. Persons with aphasia identified fewer symbols accurately and had longer response latencies than persons in the control group. Number of symbols on the screen and location level had a significant effect on accuracy and latency for both groups. Persons with aphasia perceived tasks to be more difficult than persons in the control group. Results indicate that effective use of SGDs by persons with aphasia may depend on several message organization factors including location and number of symbols per screen.
      pubtype: Academic Journal
      doctype:
        research
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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