PSYB51H3 Chapter 8: Chapter 8
Document Summary
Selective attention: ability to pick one (or few) out of many stimuli. If lesion in right parietal lobe, problems directing attention to objects and places on their left. Extinction: neglect- patient may be entirely unable to deploy attention to contralesional side of world or object, extinction- patient may be able to get attention to object in contralesional field if it is the only salient object. Ipsilesional field- same side as lesion: if there is competition from another similar object in that field, then 2 objects compete for attention and ipsilesional object wins. Balint syndrome: bilateral lesions of parietal lobes. 3 major symptoms: spatial localization abilities are greatly reduced. result, patient with balint syndrome may have very hard time try to reach to an object: patients with balint syndrome don"t move their eyes every much. tend to gaze fixedly ahead: behave as if they can see only one object at a time.
