In some patients with unilateral spatial neglect, symptoms reflect impaired lateralized spatial attention and representation (perceptual bias) whereas in others the inability to respond to stimuli located in contralesional space (response bias). Here, we investigated whether prismatic adaptation (PA) and visual scanning training (VST) differentially affect perceptual and response bias and whether rehabilitation outcome depends on the type of bias underlying symptoms. Two groups of neglect patients in the subacute phase were evaluated before, immediately after, and two weeks following 10 days of PA (n = 9) or VST (n = 9). Standard neuropsychological tests (i.e., Behavioural Inattentional Test, Diller cancellation test, and Line Bisection test) were administered to assess neglect symptoms, while the Landmark task was used to disentangle perceptual and response biases. Performance on the Landmark task revealed that PA was more effective in improving the perceptual bias, while VST mainly modulated the response bias. Neuropsychological tests performance suggested that VST is better suited to modulate neglect in patients with response bias, while PA may be effective in patients with both types of bias. These findings may offer novel insights into the efficacy of PA and VST in the rehabilitation of perceptual and response biases in patients with neglect.

Effects of prism adaptation and visual scanning training on perceptual and response bias in unilateral spatial neglect / Gammeri, Roberto; Schintu, Selene; Salatino, Adriana; Vigna, Francesca; Mazza, Alessandro; Gindri, Patrizia; Barba, Sonia; Ricci, Raffaella. - In: NEUROPSYCHOLOGICAL REHABILITATION. - ISSN 0960-2011. - 2023, 34:2(2023), pp. 1-26. [10.1080/09602011.2022.2158876]

Effects of prism adaptation and visual scanning training on perceptual and response bias in unilateral spatial neglect

Schintu, Selene
Co-primo
;
2023-01-01

Abstract

In some patients with unilateral spatial neglect, symptoms reflect impaired lateralized spatial attention and representation (perceptual bias) whereas in others the inability to respond to stimuli located in contralesional space (response bias). Here, we investigated whether prismatic adaptation (PA) and visual scanning training (VST) differentially affect perceptual and response bias and whether rehabilitation outcome depends on the type of bias underlying symptoms. Two groups of neglect patients in the subacute phase were evaluated before, immediately after, and two weeks following 10 days of PA (n = 9) or VST (n = 9). Standard neuropsychological tests (i.e., Behavioural Inattentional Test, Diller cancellation test, and Line Bisection test) were administered to assess neglect symptoms, while the Landmark task was used to disentangle perceptual and response biases. Performance on the Landmark task revealed that PA was more effective in improving the perceptual bias, while VST mainly modulated the response bias. Neuropsychological tests performance suggested that VST is better suited to modulate neglect in patients with response bias, while PA may be effective in patients with both types of bias. These findings may offer novel insights into the efficacy of PA and VST in the rehabilitation of perceptual and response biases in patients with neglect.
2023
2
Gammeri, Roberto; Schintu, Selene; Salatino, Adriana; Vigna, Francesca; Mazza, Alessandro; Gindri, Patrizia; Barba, Sonia; Ricci, Raffaella
Effects of prism adaptation and visual scanning training on perceptual and response bias in unilateral spatial neglect / Gammeri, Roberto; Schintu, Selene; Salatino, Adriana; Vigna, Francesca; Mazza, Alessandro; Gindri, Patrizia; Barba, Sonia; Ricci, Raffaella. - In: NEUROPSYCHOLOGICAL REHABILITATION. - ISSN 0960-2011. - 2023, 34:2(2023), pp. 1-26. [10.1080/09602011.2022.2158876]
File in questo prodotto:
File Dimensione Formato  
Gammeri et al. - 2023 - Effects of prism adaptation and visual scanning tr.pdf

Solo gestori archivio

Tipologia: Versione editoriale (Publisher’s layout)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 1.55 MB
Formato Adobe PDF
1.55 MB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/364860
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 4
  • ???jsp.display-item.citation.isi??? 3
social impact