Investigation of Neglect with Cue- Target Paradigm Posner et al. (late 1970s) used a cue- target paradigm Parietal Lobe patients are profoundly impaired.

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Presentation transcript:

Investigation of Neglect with Cue- Target Paradigm Posner et al. (late 1970s) used a cue- target paradigm Parietal Lobe patients are profoundly impaired only when invalidly cued to attended to the ipsilesional (good) side

Investigation of Neglect with Cue- Target Paradigm Interpretation: parietal lobe mediates a disengagement of attention in order to shift to another stimulus Right parietal lesions tend to be more disruptive – Indicates that Rt. Parietal is disproportionately involved in spatial orienting in most people – Does this match the neuroimaging data? What might account for any differences?

Attention “Disorders” in Normal Subjects A number of illusions/demonstrations exist that give us a hint of what it might be like to have a disorder of attention – Inattentional or “change” blindness can occur when something interferes with the normal attention orienting system