Abstract:
:Two left- and right-hemispherectomized patients with contralateral hemianopia and 20 normal controls were administered a line bisection task. All hemispherectomized patients showed a strong bisection bias towards their blind visual field. This contralateral bias persisted when patients were forced to start scanning within their blind hemifield, supporting the idea of a strategic adaptation of attention towards the blind visual field. In all patients the hemispherectomy was performed as a result of cortical abnormality (congenital or acquired) and therefore early changes in functional cerebral organization may have occurred in these patients. The absence of a neglect-like ipsilateral bias and the presence of a hemianopic-like contralateral bias in line may represent a functional deficit or suggest that plastic changes following hemispherectomy induced an adaptive functional re-organization of spatial attention in both left- and right-hemispherectomized patients.
journal_name
Neuropsychologiajournal_title
Neuropsychologiaauthors
Hausmann M,Waldie KE,Allison SD,Corballis MCdoi
10.1016/s0028-3932(03)00076-9subject
Has Abstractpub_date
2003-01-01 00:00:00pages
1523-30issue
11eissn
0028-3932issn
1873-3514pii
S0028393203000769journal_volume
41pub_type
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