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ScientificWorldJournal. 2012;2012:618528. doi: 10.1100/2012/618528. Epub 2012 May 2.

Long-term efficacy of prism adaptation on spatial neglect: preliminary results on different spatial components.

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1
Department of Human Sciences, University of Bergamo, 24129 Bergamo, Italy. marialuisa.rusconi@unibg.it

Abstract

This study describes the long-term effectiveness on spatial neglect recovery of a 2-week treatment based on prism adaptation (PA). Seven right-brain-damaged patients affected by chronic neglect were evaluated before, after two weeks of the PA treatment and at a follow-up (variable between 8 and 30 months after the end of PA). Neglect evaluation was performed by means of BIT (conventional and behavioral), Fluff Test, and Comb and Razor Test. The results highlight an improvement, after the PA training, in both tasks performed using the hand trained in PA treatment and in behavioral tasks not requiring a manual motor response. Such effects extend, even if not significantly, to all BIT subtests. These results support previous findings, showing that PA improves neglect also on imagery tasks with no manual component, and provide further evidence for long-lasting efficacy of PA training. Dissociations have been found with regard to PA efficacy on peripersonal, personal, and representational neglect, visuospatial agraphia and neglect dyslexia. In particular, we found no significant differences between the pre-training and post-training PA session in personal neglect measures, and a poor recovery of neglect dyslexia after PA treatment. The recruitment of a larger sample could help to confirm the effectiveness of the prismatic lenses with regard to the different clinical manifestations of spatial neglect.

PMID:
22629167
PMCID:
PMC3354535
DOI:
10.1100/2012/618528
[Indexed for MEDLINE]
Free PMC Article
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