It has been demonstrated previously that transcranial magnetic stimulation (TMS) of the sensorimotor cortex can induce transient suppression of the perception of cutaneous near-threshold stimuli from fingers of the contralateral hand in normal individuals. One explanation accounting for deficits in the exploration of contralateral space following a unilateral hemispheric lesion refers to a loss...

In this study, we tested the main prediction derived from “A Theory Of Magnitude” or ATOM, according to which discrete (e.g., numbers) and continuous space, material) magnitudes are processed within right hemisphere. To do so, examined 11 brain-damaged patients, 19 left 30 healthy subjects on different tasks assessing magnitude estimation: symbolic non-symbolic numerical as well spatial (i.e., ...

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: 369, 2008). We proposed the term "hyperschematia" for such an expansion, with reference to an interpretation in terms of a lateral leftward d...

Right brain damaged patients show impairments in sequential decision making tasks for which healthy people do not show any difficulty. We hypothesized that this difficulty could be due to the failure of right brain damage patients to develop well-matched models of the world. Our motivation is the idea that to navigate uncertainty, humans use models of the world to direct the decisions they make...

The impact of spatial neglect remains a substantial challenge to patients undergoing rehabilitation following stroke. Beyond the relatively well-described implications for visuospatial function, neglect is increasingly shown to have a negative impact on the wider aspects of sensori-motor performance with corresponding implications for activities including gait and balance. Caloric vestibular st...

Attention allows us to prioritize the processing of external information according our goals, but also cope with sudden, unforeseen events. processes rely on coordinated activity large-scale brain networks. At cortical level, these systems are mainly organized in fronto-parietal networks, functional and anatomical asymmetries favor right hemisphere. Dysfunction right-lateralized networks often ...

introduction: in this study, we reported the reliability and validity of bedside version of persian wab (p-wab-1) adapted from western aphasia battery (wab-r)1,2. p-wab-1 is a clinical linguistic measuring tool to determine severity and type of aphasia in brain damaged patients based on aphasia quotient (aq) as a functional measure. for the purposes of a quick clinical screening of aphasia in p...

The study assessed whether the auditory reference provided by a music scale could improve spatial exploration of a standard musical instrument keyboard in right-brain-damaged patients with left spatial neglect. As performing music scales involves the production of predictable successive pitches, the expectation of the subsequent note may facilitate patients to explore a larger extension of spac...