Eye movements as probes of lexico-semantic processing in a patient with primary progressive aphasia

Mustafa Seckin*, M. Marsel Mesulam, Alfred W. Rademaker, Joel L. Voss, Sandra Weintraub, Emily J. Rogalski, Robert S. Hurley

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Eye movement trajectories during a verbally cued object search task were used as probes of lexico-semantic associations in an anomic patient with primary progressive aphasia. Visual search was normal on trials where the target object could be named but became lengthy and inefficient on trials where the object failed to be named. The abnormality was most profound if the noun denoting the object could not be recognized. Even trials where the name of the target object was recognized but not retrieved triggered abnormal eye movements, demonstrating that retrieval failures can have underlying associative components despite intact comprehension of the corresponding noun.

Original languageEnglish (US)
Pages (from-to)65-75
Number of pages11
JournalNeurocase
Volume22
Issue number1
DOIs
StatePublished - Jan 2 2016

Keywords

  • anterior temporal lobe
  • aphasia
  • eye movements
  • object naming
  • single-word comprehension

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Clinical Neurology

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