Neglect dyslexia and receptive fields 1 Hemispheric asymmetries in neglect dyslexia: A receptive field size account
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چکیده
Damage to the left or the right hemisphere can result in qualitatively and quantitatively different patterns of behavioural impairment. Damage to the right hemisphere, for example, frequently results in neglect, characterised by inattention to the contralesional side of space: this outcome is less frequent following left hemisphere damage. However, the type of stimulus to which the neglect patient is attending modulates the occurrence and severity of neglect. In the case of reading single words, there is mounting evidence that neglect is more severe following left than right hemisphere damage. We locate this asymmetry in an account of spatial cognition that draws on processing styles in the two hemispheres. We provide a computational model of neglect instantiating small receptive field visual processing in the left hemisphere and large receptive fields in the right hemisphere. The model demonstrated more neglect for nonlexical stimuli and less neglect for words following right damage compared with left damage.
منابع مشابه
Modelling neglect 1 Running head: MODELLING HEMISPHERIC ASYMMETRIES IN NEGLECT Hemispheric asymmetries in cognitive modelling: Connectionist modelling of unilateral visual neglect and neglect dyslexia
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