Neglect can occur if there is a cortical lesion in a susceptible area of the brain.
Neglect may be manifested as:
(1) reduced attention towards one side of the body
(2) reduced attention to a visual stimulus from one side
Lesions that can result in neglect can involve:
(1) the parietal lobe (neglect on opposite side of body)
(2) premotor cortex
(3) thalamus
Anosognosia refers to denial of a functional deficit on the affected side.