The Spiking Search over Time and Space Model (sSoTS): Simulating Dual Task Experiments and the Temporal Dynamics of Preview Search

Mavritsaki, Eirini; Heinke, Dietmar; Humphreys, Glyn W.; Deco, Gustavo

doi:10.1007/978-3-540-77343-6_22

Cited by 1 publication

(2 citation statements)

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“…On this view, damage to the right TPJ will generate biases in visual selection that could contribute both to neglect (targets on the contralesional side of the map will have reduced saliency relative to ipsilesional stimuli) and to extinction (due to reduced feedback from the saliency map, contralesional items may lose out in the competition for selection with ipsilesional stimuli, especially if the items are briefly presented). Examples of both types of behavior, depending on factors such as the complexity of the search displays and whether limited exposures are used, were demonstrated by Mavritsaki and colleagues 88 when damage to the central location map of sSoTS was simulated. The model provides a framework for understanding the emergence of spatial biases in these syndromes, according to the degree of competition for visual selection and the degree of damage sustained.…”

Section: Evidence From Neuroimaging and Its Relation To The Neuropsycmentioning

confidence: 99%

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The neural mechanisms of visual selection: the view from neuropsychology

Riddoch

Chechlacz

Mevorach

et al. 2010

Annals of the New York Academy of Sciences

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In this review, we discuss how neuropsychological impairments in visual selection can inform us about how selection normally operates. Using neuroanatomical and behavioral evidence on the disorders of neglect, extinction, and simultanagnosia, we propose functional and anatomical links between different aspects of visual selection and distinct sites in the posterior parietal cortex (PPC). This includes linking: (i) bottom-up attentional capture and the right temporo-parietal junction (TPJ); (ii) top-down segmentation of displays and the medial PPC; (iii) grouping, individuation and identification, and the inferior intra-parietal sulcus (IPS) bilaterally; and (iv) the suppression of saliency and the left IPS. In addition, when neuropsychological studies are combined with fMRI, there is evidence that these regions of the PPC interact with striate and extra-striate cortical areas, which respond to specific properties of stimuli. Selection should be viewed as an emergent property of a network of areas involving both ventral and dorsal cortex.

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Section: Evidence From Neuroimaging and Its Relation To The Neuropsycmentioning

confidence: 99%

“…One way forward here is to use computational models where neurotransmitter functions are specified to provide a link between their operation and emergent whole‐system behavior. Examining effects of lesioning on neurotranmistter function can also be done through modeling 88 …”

Section: Future Issuesmentioning

confidence: 99%