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Visual Imagery II
Representation of Images - Psysiological Data
| Question | Answer |
|---|---|
| Describe LeBihan et al. (1993) fMRI study | Used fMRI to examine brain activity in primary visual cortex (occipital lobe). Examined for presented vs. imagined stimuli. |
| Describe Kreiman et al (2000) study on single cell recordings and explain what they found. | Electrodes were implanted in epileptic patients. single cell responses to presented stimuli were measured. The results showed that the same cells' responded to imaginations of the same stimuli. |
| What did Luzzatti (1978) find of Unilateral Neglect Patients? | Damage to the right parietal lobe caused neglect to the let half of visual world. It also caused neglect of the left half of images. |
| Describe Ganis et al. (2004) Comprehensive fMRI Study. | Activity in the front, middle and rear brain was measured for perception versus imagery. Results found that there was no difference in front brain, none in middle slices of brain, & subtle differences in back of brain. |
| There is not perfect overlap between perception and imagery. What is the differences between the two? | Perception involves sensory input (bottom-up) + knowledge (top-down), while imagery involves knowledge (top-down) but no sensory input. |
Created by:
cassidylm34
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