Normative data for distal line bisection and baking tray task

Abstract

Line bisection is one of the tests used to diagnose unilateral spatial neglect (USN). Despite its wide application, no procedure or norms were available for the distal variant when the task was performed at distance with a laser pointer. Furthermore, the baking tray task was an ecological test aimed at diagnosing USN in a more natural context. The aim of this study was to collect normative values for these two tests in an Italian population. We recruited a sample of 191 healthy subjects with ages ranging from 20 to 89 years. They performed line bisection with a laser pointer on three different line lengths (1, 1.5, and 2 m) at a distance of 3 m. After this task, the subjects performed the baking tray task and a second repetition of line bisection to test the reliability of measurement. Multiple regression analysis revealed no significant effects of demographic variables on the performance of both tests. Normative cut-off values for the two tests were developed using non-parametric tolerance intervals. The results formed the basis for clinical use of these two tools for assessing lateralized performance of patients with brain injury and for diagnosing USN.

E-TAN, a technology-enhanced platform with tangible objects for the assessment of visual neglect: A multiple single-case study

“…The procedure was similar to that used for the traditional BTT (Tham & Tegnér, 1996;Bailey, Riddoch & Crome, 2004;Facchin et al, 2016), the only exceptions being that disks were used instead of cubes, and that the board dimensions were 60 x 45 cm. Participants were asked to dispose the disks on the board as equally spaced as possible.…”

“…Thus, the BTT proved to be a simple and yet sensitive test of neglect. Additionally, performance seems independent of demographic variables such as participants' age (Facchin, Beschin, Pisano & Reverberi, 2016).Given its simple and user-friendly setup, the BTT can easily be used to follow up the effects of rehabilitation (Facchin, Beschin & Daini, 2017). However, the analysis of results based on the number of items situated on the left/right halves of the board remains relatively raw, and is liable to miss subtler signs of spatial deficit, such as a pathological shrinking of the explored space.…”

E-TAN, a technology-enhanced platform with tangible objects for the assessment of visual neglect: a multiple single-case study

“…The procedure was similar to that used for the traditional BTT (Tham & Tegnér, 1996;Bailey, Riddoch & Crome, 2004;Facchin, Beschin, Pisano & Reverberi, 2016), the only exceptions being that disks were used instead of cubes, and that the board dimensions were 60 x 45 cm. Participants were asked to dispose the disks on the board as equally spaced as possible.…”

Visuospatial Neglect - a Theory-Informed Overview of Current and Emerging Strategies and a Systematic Review on the Therapeutic Use of Non-invasive Brain Stimulation

“…Ipsilesional deviation indicates visuospatial neglect.Easy and fast administration, used for screening rather than for clinical diagnosis. Good retest reliability (Facchin, Beschin, Pisano, & Reverberi, 2016). Note, that false positive results can result from HH.Copying figures and drawingCopying (e.g., flower, house etc.)…”