Absence of neglect for mental representations during the intracarotid amobarbital procedure

Dora Sue Manoach*, Margaret O'Connor, Sandra Weintraub

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Background: The unilateral suppression of right-hemisphere electrophysiological activity during the intracarotid amobarbital procedure results in left neglect on visuomotor search tasks. Objective: To investigate whether right-hemisphere inactivation during the intracarotid amobarbital procedure also results in left neglect of the mental representation of a remembered scene. Design: Before the intracarotid amobarbital procedure, 16 subjects were asked to draw a room from their homes. Following the right- hemisphere inject ion, subjects were tested for the presence of left neglect of extrapersonal space using a Random Letter Cancellation Test. To test for neglect of the mental representation of a remembered scene, they were then asked to report items from the room they had drawn. Results: While 10 of the 16 subjects showed left neglect on the Random Letter Cancellation lest, only one subject showed left neglect of the mental representation. The other 15 subjects recalled approximately equal numbers of items from the left and the right hemispaces. Conclusions: These results replicate previous findings of left neglect of extrapersonal space during the intracarotid amobarbital procedure and fail to show concurrent neglect for mental representations. They provide further evidence for the multiplicity and dissociability of the behavioral manifestations of neglect.

Original languageEnglish (US)
Pages (from-to)333-336
Number of pages4
JournalArchives of Neurology
Volume53
Issue number4
DOIs
StatePublished - Apr 1996

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Clinical Neurology

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