Experimental remission of unilateral spatial neglect

Effectiveness of Prism Adaptation in Neglect Rehabilitation

“…Furthermore, it is noteworthy that, whereas after PA, scores for patients in the PA group were not different from the cutoff score of the BIT (mean cutoff BIT-C and BIT-Bϭ97; one-sample t test [1,9]ϭϪ1.15; Pϭ0.27), after NP, scores for patients in the NP group remained significantly under the cutoff score (one-sample t test [1,9]ϭϪ2.58; Pϭ0.04). Considering patients' individual data, 6 of 10 patients from the PA group obtained BIT scores above the neglect cutoff score, whereas only one of 10 patients from the NP group obtained a score above the cutoff.…”

“…In comparison to the baseline session (71), patients' scores improved both after NP (81; PϽ0.02) and after PA (meanϭ98; SDϭ11; PϽ0.0002); however, the scores obtained after PA were significantly better than those after NP (PϽ0.0005; see Figure 2). Importantly, only after PA, scores for the patients in the NP group were not below the BIT cutoff score (t [1,9]ϭ0.17; Pϭ0.83). Moreover, although after NP only one patient obtained a BIT score above the neglect cutoff, after PA, 6 patients obtained BIT scores above the cutoff.…”

“…5 A variety of rehabilitation techniques have been explored 6,7 and the prism adaptation technique (PA) in particular has been shown to ameliorate neglect symptoms in large populations of patients. 8,9 PA requires the patient to perform a series of pointing movements toward a visual target while wearing prismatic goggles. These goggles induce a deviation of the visual field toward the right.…”

Evaluating visual bias and effect of proprioceptive feedback in unilateral neglect

“…From a clinical viewpoint, specific assessments for each type of neglect may be crucial. Some studies suggest that different subtypes of neglect may respond differently to various treatments (for reviews see Bowen et al, 31 Chokron et al, 32 and Pierce et al). 33 For patients with supramodal neglect, therapy that affects the organization of higher-level spatial representation may be more effective than modality-specific therapy.…”

Multisensory processing after a brain damage: Clues on post-injury crossmodal plasticity from neuropsychology

“…For instance, vestibular stimulation ameliorates left-sided somatosensory deficits, visuo-motor prismatic adaptation improves tactile and auditory deficits, and optokinetic stimulation may ameliorate (and even worsen) proprioceptive deficits of position sense (Vallar et al, 1997). Based on interpretations of unilateral spatial neglect as an attentional/representational imbalance (e.g., Vallar and Bolognini, 2012), boosting sensory inputs from the affected side, or decreasing sensory inputs from the intact side, might reduce the ipsilesional bias, a principle that is at the heart of bottomup based approaches for the rehabilitation of neglect (Chokron et al, 2007;Kerkhoff, 2003;Kerkhoff and Schenk, 2012;Vallar and Bolognini, 2012;Vallar et al, 1997). Indeed, asymmetrical sensory stimulations may induce an automatic, bottom-up behavioural change or a recalibration of the recruited sensorimotor mechanisms that does not depend upon patients adopting top-down, controlled strategies in order to explore the left hand-side of space (Kerkhoff, 2003;Vallar and Bolognini, 2012).…”