Neglect in Three Dimensions

Abstract

Because vertical and radial neglect may affect the ability to perform functional daily activities, occupational therapists need to address the existence of vertical and radial neglect when evaluating and training patients with brain damage.

Neglect in Radial and Vertical Axes after a Unilateral Left Temporo-Occipital Lesion

“…No structural or functional abnormality of the right hemisphere was demonstrated by MRI and FDG-PET. Therefore, the present case supports the contention that a single unilateral lesion may be sufficient to produce vertical or radial neglect [5][6][7][8]. Previous reported cases had right hemisphere lesions, whereas our patient showed neglect in three spatial axes after left hemisphere injury.…”

Pseudoneglect: a review and meta-analysis of performance factors in line bisection tasks

“…Visuospatial neglect has been described predominantly in the azimuthal (horizontal) plane; however, neglect may also be manifested in the altitudinal (vertical) and radial (depth) planes. Typically, patients neglect inferior (lower) space in the altitudinal plane, bisecting lines above veridical center [3,21,48,62,69,77,101]. In the radial plane, patients typically neglect proximal (near) space as evidenced by their bisecting of lines at a point distal to veridical center [62,88,113].…”

“…Typically, patients neglect inferior (lower) space in the altitudinal plane, bisecting lines above veridical center [3,21,48,62,69,77,101]. In the radial plane, patients typically neglect proximal (near) space as evidenced by their bisecting of lines at a point distal to veridical center [62,88,113]. The neural mechanisms governing the allocation of attention to the azimuthal, altitudinal, and radial planes may be independent or quasiindependent [21,84,88,101,113].…”

“…Most studies have limited testing to dextral subjects [19,23,30,31,38,41,42,48,50,60,61,62,79,84,87,91,94,97,111,115,120,126]. Many, however, fail to disclose subject handedness [4,6,11,22,40,57,98,103,113,118].…”

Mapping mental number line in physical space: Vertical and horizontal visual number line orientation in asymptomatic individuals with HIV

“…Though neglect has been most often described in the horizontal dimension, it can be manifested in all three dimensions: horizontal (lateral), radial (near-far), and vertical (altitudinal) (Kageyama, Imagase, Okubo, & Takayama, 1994;Kori & Geldmacher, 1999;Vallar, Guariglia, Magnotti, & Pizzamiglio, 1995). Moreover, the processing of horizontal and vertical physical lines activates the same anatomical networks in the right inferior parietal cortex (Fink et al, 2001).…”