Attention, spatial representation, and visual neglect: simulating emergent attention and spatial memory in the selective attention for identification model (SAIM).
The selective attention for identification model (SAIM) is presented. This uses a spatial window to select visual information for recognition, binding parts to objects and generating translation-invariant recognition. The model provides a qualitative account of both normal and disordered attention. Simulations of normal attention demonstrate 2-object costs and effects of object familiarity on selection, global precedence, spatial cueing, and inhibition of return. When lesioned, SAIM demonstrated either view- or object-centered neglect or spatial extinction, depending on the type and extent of lesion. The model provides a framework to unify (a) object- and space-based theories of normal selection, (b) dissociations within the syndrome of unilateral neglect, and (c) attentional and representational accounts of neglect.
Heinke
Dietmar
D
Behavioural and Brain Sciences Centre, School of Psychology, University of Birmingham, Birmingham, England.
Humphreys
Glyn W
GW
D001288:Attention; D003463:Cues; D006801:Humans; D008568:Memory / Q000502:physiology*; D008960:Models, Psychological; D009483:Neuropsychological Tests; D010468:Perceptual Disorders / Q000175:diagnosis*; D011930:Reaction Time; D013028:Space Perception; D014794:Visual Fields / Q000502:physiology