Processing visual scene statistical properties in patients with unilateral spatial neglect

Auditory midline and spatial discrimination in patients with unilateral neglect.

Patients with unilateral neglect frequently show a bias in their subjective midline, as measured by pointing, or by a purely perceptual visual task (Ferber and Karnath, 1999). The subjective straight ahead has also been measured in audition. Vallar et al. (1995), Kerkhoff et al. (1999) and Tanaka et al. (1999) have all described a shift of the auditory midline to the right. We consider several ...

Early Visual Processing is Affected by Clinical Subtype in Patients with Unilateral Spatial Neglect: A Magnetoencephalography Study

OBJECTIVE To determine whether visual evoked magnetic fields (VEFs) elicited by right and left hemifield stimulation differ in patients with unilateral spatial neglect (USN) that results from cerebrovascular accident. METHODS Pattern-reversal stimulation of the right and left hemifield was performed in three patients with left USN. Magnetoencephalography (MEG) was recorded using a 160-channel...

Swan Unilateral Spatial Neglect

Horizontal visual search in a large field by patients with unilateral spatial neglect.

In this study, we investigated the horizontal visual search ability and pattern of horizontal visual search in a large space performed by patients with unilateral spatial neglect (USN). Subjects included nine patients with right hemisphere damage caused by cerebrovascular disease showing left USN, nine patients with right hemisphere damage but no USN, and six healthy individuals with no history...

The contribution of spatial remapping impairments to unilateral visual neglect.

Left visual neglect following right hemisphere damage is a heterogeneous phenomenon, in which several underlying impairments have been identified. Despite recent advances in understanding the neural and cognitive bases of these impairments, current theories of neglect, particularly those that emphasise attentional deficits, do not explain a number of phenomena, including: 'Ipsilesional' neglect...