Lipinsky, Charly (2022) Systematic Review on Treating Neglect with Prism Adaptation – The Relative Impact of Realignment and Recalibration. Master thesis, Psychology.
|
Text
MasterThesis_CharlyLipinsky_S3185575.pdf Download (2MB) | Preview |
Abstract
Prism Adaptation (PA) is a treatment procedure aiming at reducing unilateral visuo-spatial neglect. In recent years, research reported mixed results regarding the effectiveness of PA (Rousseaux et al., 2016; Turton et al., 2010; Qiu et al., 2021; Li et al., 2021). This systematic review investigated two cognitive processes that play a crucial role in adapting to prisms. First, realignment, which relies on an adjustment of egocentric reference frames (Redding & Wallace, 2006), and second, recalibration, which relies on strategic control to correct for errors (Redding et al., 2005). Effects of PA were classified as aftereffects (positions of pointings after PA) or treatment effects (performance on functional and visuospatial tests), yet since aftereffects are said to confirm adaptation to prisms (McIntosh et al., 2019), treatment effects were expected to only emerge when aftereffects were observed. This review proposed that aftereffects are dependent on the dosage of realignment, reflected by the number of pointings, whereas treatment effects are dependent on the dosage of recalibration, reflected by the number of sessions. Further, effects are hypothesized to be facilitated, or restricted by clinical and methodological factors. Literature was obtained from online databases, such as PsychINFO and PubMed and selected based on subject matters. Subsequently, suitable studies were analysed (n=29) and compared based on effect sizes and p-values and observed frequencies of significant results were calculated. Findings show that the facilitation of realignment predicts the emergence of aftereffects, while treatment effects cannot be explained by the increase of either process. Recalibration did have an impact on both types of effects, yet only when patients generally responded to PA, the number of sessions influenced outcomes. Effects are not solely attributable to dosages of either component, as neglect severity and duration, type of exposure, and spatial extent of pointing space moderate the effectiveness of PA. Keywords: prism adaptation, neglect, realignment, recalibration, dosage
| Item Type: | Thesis (Master) |
|---|---|
| Supervisor name: | Heutink, J.H.C. |
| Degree programme: | Psychology |
| Differentiation route: | Clinical Neuropsychology (CN) [Master Psychology] |
| Date Deposited: | 23 Mar 2022 08:49 |
| Last Modified: | 23 Mar 2022 08:49 |
| URI: | http://gmwpublic.studenttheses.ub.rug.nl/id/eprint/349 |
Actions (login required)
 |
View Item |