Short-Term and Long-Term Effects of Selective Visuo-Spatial Attention on Visual Field Defects in Patients With Cerebral Lesions

摘要: From the earliest days of academic psychology, role attention in perception has been one major foci research and cognitive modelling (see Yantis1, William James 2). Many experiments with normally-sighted subjects have shown that can facilitate (visual) for example Parasuraman 3). Attended stimuli are more easily detected, reaction time is generally faster than to unattended items a visual display, discrimination similar also facilitated 4,5,6. Thus, results from large number behavioural studies as well physiological imaging humans animals indicate perceptual thresholds reduced by focusing at certain class stimuli. Moreover, seems exert its beneficial influence especially when difficult individual. Ambiguous or unclear conditions may occur different reasons: On hand, they be caused unfavourable physical stimulus characteristics, e.g. low contrast background. other originating lesions brain affecting system hence leading field defects. In both cases, allocating attentional resources specific area should improve perception.