Virtual-grasping influences visual exploration in hemispatial neglect: A preliminary eye-tracking study
نویسندگان
چکیده
The present study aims at investigating dissociations between vision-for-action and vision-for-perception in hemispatial neglect patients through eye-tracking. Three patients and ten controls completed two gap-bisection tasks. While patients showed a rightward bias during the perceptual task, in the virtual-grasping task we have not found evidences for a similar deviation.
منابع مشابه
Hemispatial neglect: its effects on visual perception and visually guided grasping.
Hemispatial neglect is a neurological disorder characterized by a failure to represent information appearing in the hemispace contralateral to a brain lesion. In addition to the perceptual consequences of hemispatial neglect, several authors have reported that hemispatial neglect impairs visually guided movements. Others have reported that the extent of the impairment depends on the type of vis...
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PURPOSE The aims of the present article were the following: (i) to provide some evidence of the potential of virtual reality (VR) for the assessment, training and recovery of hemispatial neglect; (ii) to present data from our laboratory which seem to confirm that the clinical manifestation of neglect can be improved by using VR techniques; and (iii) to ascertain the neural bases of this improve...
متن کاملMotor Aspects of Hemispatial Neglect
A relatively common outcome of unilateral brain damage in humans is the syndrome of hemispatial neglect. Hemispatial neglect can occur following damage to a variety of brain regions but is chiefly associated with damage to the inferior parietal lobule, most frequently involving the occipito-temporo-parietal junction of the right hemisphere [1]. Neglect patients fail to respond appropriately to ...
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Hemispatial neglect is a common outcome of stroke that is characterized by the inability to orient toward, and attend to stimuli in contralesional space. It is established that hemispatial neglect has a perceptual component, however, the presence and severity of motor impairments is controversial. Establishing the nature of space use and spatial biases during visually guided actions amongst hea...
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Patients with hemispatial neglect are severely impaired in orienting their attention to contralesional hemispace. Although motion is one of the strongest attentional cues in humans, it is still unknown how neglect patients visually explore their moving real-world environment. We therefore recorded eye movements at bedside in 19 patients with hemispatial neglect following acute right hemisphere ...
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