PSYC31H3 Chapter Notes - Chapter 10: Internal Consistency, Hemispatial Neglect, Astereognosis
Document Summary
Brain impairment involving one visa function will a ect a cluster of functions. Visual symbolic stimuli (printed words) have spatial dimensions and other visual characteristics that lend themselves to processing as con gurations. Visual processing also requires ocular movement and gaze, as visual tracking and ocular feedback contribute to to visuospatial and perceptual processing. Impairment of basic visual functions (acuity) is likely to result in poor performance in the most complex visuoperceptual tasks. Visual inattention visual neglect involves absence of awareness of visual stimuli in the left. Eld of vision, re ecting its common association with right hemisphere lesions. Likely to occur with posterior lesions (parietal lobe) or frontal lobe lesions. Right hemisphere damage can disrupt attentional networks throughout the brain. The presence of homonymous hemianopsia increases the likelihood of visual inattention but they are not linked. More apt to be apparent during the acute stages of a sudden onset condition such as stroke.
