Farah Visual Imagery
FARAH: Visual Imagery 1. ... Bottom-down activation: representations used in imagery are not the same as the ones used in perception: recall of visual info is distinct from those used in seeing. Cortical visual processing begins in the occipital lobes, which contain primary and secondary visual cortex, and continues in the posterior parietal and temporal lobes, which contain modality-specific visual representations as well as multimodal representations. ... - Unable to use mental imagery Regional cerebral blood flow for measuring and localizing brain activity in normal subjects: - Visual imagery task: increased blood flow of the posterior regions of the brain: occipital lobe, posterior superior parietal lobe, posterior inferior temporal lobe.