Endpoints and viewpoints on spatial neglect

Robert D McIntosh*, Sumio Ishiai

*Corresponding author for this work

Research output: Contribution to journalComment/debatepeer-review

Abstract / Description of output

In this issue of the Journal of Neuropsychology, Abe and Ishiai (2022) report an experiment designed to probe the subjective experience of line bisection in neglect. A re-analysis of their data can also offer insights into how best to characterise neglect performance for this and other tasks. We show that sensitive measures of neglect can be obtained by quantifying the difference in the influence (or 'weighting') that each endpoint has on the response. The right endpoint is dramatically more influential than the left in people with neglect performing line bisection and endpoint reproduction tasks. This supports the view that neglect may limit the ability to simultaneously represent two locations, so that the response is determined primarily with respect to the right endpoint. We also discuss Abe and Ishiai's conclusion that bisection responses in neglect are accompanied by the subjective experience of a complete line extending equally to either side of the chosen midpoint.

Original languageEnglish
Pages (from-to)299-305
JournalJournal of Neuropsychology
Volume16
Issue number2
Early online date4 May 2022
DOIs
Publication statusPublished - Jun 2022

Keywords / Materials (for Non-textual outputs)

  • attention
  • bisection
  • endpoint weightings
  • mental representation
  • neglect

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