Dissociated neglect behavior following sequential strokes in the right hemisphere.
A 42-year-old woman suffered two focal right hemisphere strokes, sequentially damaging different components of a proposed cerebral network for the spatial distribution of attention. Her first stroke was centered in the right frontal lobe and resulted in left hemi-spatial neglect but only for tasks that emphasize exploratory-motor components of directed attention. A second stroke occurred 20 days later in the parietal lobe and led to the emergence of perceptual-sensory aspects of neglect. This case strongly supports the existence of a distributed anatomic-functional network subserving directed attention.
Daffner
K R
KR
Bullard and Denny-Brown Laboratories, Division of Behavioral Neurology and Neuroscience, Harvard Neurology Department, Beth Israel Hospital, Boston, MA 02215.
Ahern
G L
GL
Weintraub
S
S
Mesulam
M M
MM
D000328:Adult; D001288:Attention; D002561:Cerebrovascular Disorders / Q000150:complications* / Q000503:physiopathology; D005260:Female; D005625:Frontal Lobe; D006801:Humans; D009043:Motor Activity; D010296:Parietal Lobe