Differential effects of semantic and identity priming in patients with left and right hemisphere lesions

Avishai Henik, Nina Dronkers, Robert T. Knight, Alicia Osimani

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

Patients with single brain lesions in the anterior or posterior left and right hemispheres and a group of controls were studied In two priming experiments. The first experiment employed associative pairs (DOCTOR-NURSE) and the second employed identical pairs (NURSE-nurse). Short and long prime-target stimulus onset asynchronies (SOAs) (i.e., 250 and 1850 msec) were manipulated within block in both experiments. In the first experiment, patients with left hemisphere injury showed a deficient priming effect while patients with right hemisphere injury and controls showed a normal pattern. In contrast, all groups showed an identity priming effect in the second experiment. These results indicate that while entries in the mental lexicon are available for the groups of patients studied, the spread of activation to related concepts in this lexicon is disrupted in the left hemisphere-damaged group.

Original languageEnglish (US)
Pages (from-to)45-55
Number of pages11
JournalJournal of Cognitive Neuroscience
Volume5
Issue number1
StatePublished - 1993

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Experimental and Cognitive Psychology
  • Cognitive Neuroscience

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