Visual implicit memory in the left hemisphere: Evidence from Patients with Callosotomies and Right Occipital Lobe Lesions

A. P. Yonelinas, N. E A Kroll, Kathleen Baynes, I. G. Dobbins, C. M. Frederick, R. T. Knight, M. S. Gazzaniga

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

Identification of visually presented objects and words is facilitated by implicit memory for past visual experiences with those items. Several behavioral and neuroimaging studies suggest that this form of memory is dependent on perceptual processes localized in the right occipital lobe. We tested this claim by examining implicit memory in patients with extensive right occipital lobe lesions, using lexical-decision, mirror-reading, picture-fragment, and word-fragment-completion tests, and found that these patients exhibited normal levels of priming. We also examined implicit memory in patients with complete callosotomies, using standard and divided-visual-field word-fragment-completion procedures, and found that the isolated left hemisphere exhibited normal priming effects. The results indicate that the right occipital lobe does not play a necessary role in visual implicit memory, and that the isolated left hemisphere can support normal levels of visual priming in a variety of tasks.

Original languageEnglish (US)
Pages (from-to)293-298
Number of pages6
JournalPsychological Science
Volume12
Issue number4
StatePublished - Jul 2001

ASJC Scopus subject areas

  • Psychology(all)

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    Yonelinas, A. P., Kroll, N. E. A., Baynes, K., Dobbins, I. G., Frederick, C. M., Knight, R. T., & Gazzaniga, M. S. (2001). Visual implicit memory in the left hemisphere: Evidence from Patients with Callosotomies and Right Occipital Lobe Lesions. Psychological Science, 12(4), 293-298.