Auditory repetition priming is impaired in pure alexic patients

Diane Swick, Kimberly M. Miller, Jary Larsen

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Alexia without agraphia, or "pure" alexia, is an acquired impairment in reading that leaves writing skills intact. Repetition priming for visually presented words is diminished in pure alexia. However, it is not possible to verify whether this priming deficit is modality-specific or modality independent because reading abilities are compromised. Hence, auditory repetition priming was assessed with lexical decision and word stem completion tasks in pure alexic patients with lesions in left inferior temporal-occipital cortex and the splenium. Perceptually based, modality-specific priming models predict intact auditory priming, since auditory association cortex is spared in the patients. Alternatively, modality-independent models, which suggest that priming reflects the temporary modification of an amodal system, might predict impairments. Baseline performance was matched in the patients and controls, although lexical decision priming measures showed an interaction between group and repetition lag. The patients showed intact immediate priming but significantly less priming than controls at longer delays. Furthermore, word stem completion priming was abolished in the patients. One explanation for the deficit is that left inferior temporal-occipital cortex supports amodal aspects of priming, as suggested by recent neuroimaging results. Another possibility is that long-term auditory priming relies on covert orthographic representations which were unavailable in the patients. The results provide support for interactive models of word identification.

Original languageEnglish (US)
Pages (from-to)543-553
Number of pages11
JournalBrain and Language
Volume89
Issue number3
DOIs
StatePublished - Jun 2004

Fingerprint

Repetition Priming
Pure Alexia
deficit
Occipital Lobe
group interaction
Temporal Lobe
Reading
Auditory Cortex
Aptitude
ability
Neuroimaging
performance
Hearing
Priming

Keywords

  • Alexia
  • Auditory priming
  • Implicit memory
  • Temporal-occipital cortex
  • Word identification

ASJC Scopus subject areas

  • Language and Linguistics
  • Experimental and Cognitive Psychology
  • Neuropsychology and Physiological Psychology
  • Neuroscience(all)

Cite this

Auditory repetition priming is impaired in pure alexic patients. / Swick, Diane; Miller, Kimberly M.; Larsen, Jary.

In: Brain and Language, Vol. 89, No. 3, 06.2004, p. 543-553.

Research output: Contribution to journalArticle

Swick, Diane ; Miller, Kimberly M. ; Larsen, Jary. / Auditory repetition priming is impaired in pure alexic patients. In: Brain and Language. 2004 ; Vol. 89, No. 3. pp. 543-553.
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