Auditory deprivation affects biases of visuospatial attention as measured by line bisection

Zaira Cattaneo, Carlotta Lega, Carlo Cecchetto, Costanza Papagno

Research output: Contribution to journalArticle

Abstract

In this study, we investigated whether early deafness affects the typical pattern of hemispheric lateralization [i.e., right hemisphere (RH) dominance] in the control of spatial attention. To this aim, deaf signers, deaf non-signers, hearing signers, and hearing non-signers were required to bisect a series of centrally presented visual lines. The directional bisection bias was found to be significantly different between hearing and deaf participants, irrespective of sign language use. Hearing participants (both signers and non-signers) showed a consistent leftward bias, reflecting RH dominance. Conversely, we observed no evidence of a clear directional bias in deaf signers or non-signers (deaf participants overall showing a non-significant tendency to deviate rightward), suggesting that deafness may be associated to a more bilateral hemispheric engagement in visuospatial tasks.

Original languageEnglish
Pages (from-to)2767-2773
Number of pages7
JournalExperimental Brain Research
Volume232
Issue number9
DOIs
Publication statusPublished - 2014

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Keywords

  • Deaf
  • Hemispheres
  • Lateralization
  • Line bisection
  • Pseudoneglect
  • Sign language

ASJC Scopus subject areas

  • Neuroscience(all)
  • Medicine(all)

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