Dorsal stream dysfunction1 and 'dorsal stream dysfunction plus': a potential classification for perceptual visual impairment in the context of cerebral visual impairment?

A large proportion of the brain is devoted to vision, so it is not surprising that visual processing is commonly affected when the brain is damaged. The classical model of understanding is that image data from the retina are transferred via the optic nerves and lateral geniculate bodies to the occipital cortex where the picture is 'seen'; and damage to this system leads to loss of visual field and reduced visual acuities. However, impairment of higher visual processing is also common and may easily go unrecognized or may be misdiagnosed, but there are typical behavioural features, easily elicited by structured history taking and validated by observation of behaviour and testing, which lead to the diagnosis.1 Strategies can then be designed to meet the needs of each child#

作 者：

GORDON N DUTTON

刊 名：

Developmental Medicine and Child Neurology 

年，卷(期)：

2009vol.51(no.3) 

分类号：

 

关键词：

Abnormal vision  Classification of information  Functional disorder  Dorsal  脑

正文语种：

eng 

基金项目：