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Giuseppe Vallar

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Related publications (12)

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Disownership of body parts as revealed by a visual scale evaluation. An observational study

Olaf Blanke, Roberta Ronchi, Michela Bassolino, Giuseppe Vallar, Dragana Viceic

The disownership of body parts, that most frequently occurs on the left side of the body, contralateral to right-hemispheric lesions, is an infrequent disorder, as usually assessed by interviews asking for dichotomic "yes/no" responses. This observational ...

2020

Left neglect dyslexia: Perseveration and reading error types

Roberta Ronchi, Giuseppe Vallar

Right-brain-damaged patients may show a reading disorder termed neglect dyslexia. Patients with left neglect dyslexia omit letters on the left-hand-side (the beginning, when reading left-to-right) part of the letter string, substitute them with other lette ...

Elsevier2016

Combining language and space: Sentence bisection in unilateral spatial neglect

Giuseppe Vallar

In line bisection right-brain-damaged patients with left spatial neglect show a rightward deviation, with respect to the line's physical center. In word bisection ortho-phonological features of the stimulus' final (right-sided) part modulate performance of ...

Academic Press Inc Elsevier Science2014

(Un)awareness of unilateral spatial neglect: A quantitative evaluation of performance in visuo-spatial tasks

Roberta Ronchi, Giuseppe Vallar

Right-brain-damaged patients with unilateral spatial neglect are usually unaware (anosognosic) about their spatial deficits. However, in the scientific literature there is a lack of systematic and quantitative evaluation of this kind of unawareness, despit ...

Elsevier Masson2014

Hyperschematia after right brain damage: a meaningful entity?

Roberta Ronchi, Giuseppe Vallar

In recent years we reported three right-brain-damaged patients, who exhibited a left-sided disprortionate expansion of drawings, both by copying and from memory, contralateral to the side of the hemispheric lesion (Neurology, 67: 1801, 2006, Neurocase 14: ...

Frontiers Research Foundation2014

Crossing the hands over the midline reduces left tactile extinction to double simultaneous stimulation in right-brain-damaged patients, suggesting that spatial attentional biases toward the ipsilesional (right) side of space contribute to the patients' con ...

Frontiers Research Foundation2012

Spatial neglect and perseveration in visuomotor exploration

Roberta Ronchi, Giuseppe Vallar

OBJECTIVE: Right-brain-damaged patients with left spatial neglect make perseveration errors in target cancellation tasks. A recent study (Ronchi, Posteraro, Fortis, Bricolo, & Vallar, 2009) showed that perseveration occurred more frequently in star than in ...

2012

Rehabilitating patients with left spatial neglect by prism exposure during a visuomotor activity

Roberta Ronchi, Giuseppe Vallar

OBJECTIVE: Adaptation to prisms displacing the visual scene rightward is a therapeutic tool for left unilateral spatial neglect (USN). We aimed at comparing the effects of the classic adaptation procedure (repeated pointing toward visual targets, control t ...

2010

Après lésion droite: somatoparaphrénie

Roberta Ronchi, Giuseppe Vallar

Ce travail est une revue des 56 patients publiés dans la littérature scientifique, présentant, à la suite d’une lésion cérébrale, un délire affectant la partie controlésionnelle du corps ou somatoparaphrénie. Cette pathologie a été décrite, hormis quelques ...

2010

A review of published brain-damaged patients showing delusional beliefs concerning the contralesional side of the body (somatoparaphrenia) is presented. Somatoparaphrenia has been reported, with a few exceptions, in right-brain-damaged patients, with motor ...

2008