Left visual neglect: is the disengage deficit space- or object-based?

Object-centered visual neglect, or relative egocentric neglect?

There has been much recent interest in the spatial frame(s)-of-reference that may influence visual neglect after brain injury (Pouget & Driver, 1999; Bisiach, 1996; Driver, Baylis, Goodrich, & Rafal, 1994). In principle, a patient with left neglect after right-hemisphere damage might neglect information towards the left of their retina, towards the left of their head, or their body (Moscovitch ...

Object-based visual neglect: a computational hypothesis.

Some patients with damage to the right parietal cortex show neglect for the left half of each of a series of objects shown in a horizontal row in the visual field. The neglect is thus not based on failure to see objects in any part of left visual space, but is object-based. We show that in a model of attention with separate V1, object (inferior temporal cortex, IT) and spatial (posterior pariet...

Object-centered not scene-based visual neglect.

Whether visuospatial attention accesses object-centered representations, in addition to location-based coordinates, was investigated in patients with hemispatial neglect who detected a target on the left or right of a single object (2 connected circles or barbell) or of 2 objects (2 unconnected circles). The object or objects either remained static (left circle in left space) or rotated by 180 ...

Neglect: Remembering the Space Left Behind

Our brain continuously creates various representations of the space around us as a function of our on-going behaviour. A recent study on how back space is represented in patients suffering from spatial neglect underscores the distinction between motor and non-motor space.

Ipsilesional neglect for left imaginal space.