Sensory Perceptual Attribute

With respect to sensory-perceptual attribute information, it can be shown that lesions of the inferotemporal cortex in monkeys and humans and temporal cortex (TE2) in rats result in visual object discrimination problems, suggesting that the inferotemporal or TE2 may play an important role in mediating long-term representations of visual object information. Additional support comes from PET scan and fMRI data in humans, in whom it can be shown that visual object information results in activation of inferotemporal cortex. In a different study, it was shown that neurons within the inferotemporal cortex responded more readily after training to a complex visual stimulus that had been paired with another complex visual stimulus across a delay, suggesting the formation of long-term representations of object-object pairs within the inferotemporal cortex. Finally, it has been shown in rats that based on a repetition priming paradigm, perceptual memory for spatial location information is mediated by the parietal cortex but not the TE2 cortex, whereas perceptual memory for visual object information is mediated by TE2 cortex but not the parietal cortex, suggesting support for independent mediation of spatial location and visual object attribute information within the knowledge-based memory system.

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