Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Pseudoneglect for mental alphabet lines is affected by prismatic adaptation

    Access Status
    Fulltext not available
    Authors
    Nicholls, M.
    Kamer, A.
    Loftus, Andrea
    Date
    2008
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Nicholls, M. and Kamer, A. and Loftus, A. 2008. Pseudoneglect for mental alphabet lines is affected by prismatic adaptation. Experimental Brain Research. 191: pp. 109-115.
    Source Title
    Experimental Brain Research
    DOI
    10.1007/s00221-008-1502-x
    ISSN
    00144819
    URI
    http://hdl.handle.net/20.500.11937/21414
    Collection
    • Curtin Research Publications
    Abstract

    While patients with right parietal damage and spatial neglect bisect lines to the right, the general population bisects lines to the left; a phenomenon known as pseudoneglect. The leftward bias also occurs for mental representations, such as number and alphabet lines. Prismatic adaptation can have a dramatic eVect on attentional bias and corrects neglect and pseudoneglect for physical and mental number lines. This study examined whether prismatic adaptation can correct leftward bisection biasesfor alphabet lines, which may have a diVerent spatial arrangement compared to number lines. In pre-adaptation testing, students (n = 42) were shown letter trigrams (e.g. C H P) and judged whether the alphabetical distance before or after the inner-letter was larger. Participants were then split into three groups and were adapted to left-shifting, control or right-shifting prims. After adaptation, the mental alphabet bisection task was re-administered. The length of left side of the alphabet lines was overestimated by all three groups in the pre-adaptation phase. Right-shifting prisms and control spectacles had no eVect on the leftward bias whereas exposure to left-shifting prisms corrected the bias. The results replicate an eVect observed for mental number lines and demonstrate that low-level sensory-motor shifts can correct attentional biases associated with high-level representations, such as letters.

    Related items

    Showing items related by title, author, creator and subject.

    • Left to right: Representational biases for numbers and the effect of visuomotor adaptation
      Loftus, Andrea; Nicholls, M.; Mattingley, J.; Bradshaw, J. (2008)
      Adaptation to right-shifting prisms improves left neglect for mental number line bisection.This study examined whether adaptation affects the mental number line in normal participants.Thirty-six participants completed a ...
    • Pseudoneglect for the bisection of mental number lines
      Loftus, Andrea; Nicholls, M.; Mattingley, J.; Chapman, H.; Bradshaw, J. (2009)
      Patients with unilateral neglect of the left side bisect physical lines to the right whereas individualswith an intact brain bisect lines slightly to the left (pseudoneglect). Similarly, for mental numberlines, which are ...
    • Look, no hands: A perceptual task shows that number magnitude induces shifts of attention
      Nicholls, M.; Loftus, Andrea; Gevers, W. (2008)
      The mental representation of numbers along a line oriented left to right affects spatial cognition, facilitating responses in the ipsilateral hemispace (the spatial–numerical association of response codes [SNARC] effect). ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.