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Magnocellular Visual System and Dyslexia

It has been suggested that memory occurs in a number of forms, with different brain regions involved differentially in different forms of memory processing (I). However, the detailed neuroanatomy of memory remains incompletely understood. In a recent PET scanning study (2), the functional anatomy of affectladen autobiographical memory was studied in normal humans. When compared with a non-autobiographical memory task, a predominantly right hemispheric activation, including the temporal cortex, hippocampus, parahippocampus, amygdala, posterior cingulate, insula, and prefrontal areas, was associated with retrieval of autobiographical memories. The results suggest that a right hemispheric network may play an important role in processing of autobiographical memory. 1 . Squire LR, Knowlton B. Memory, hippocampus, and brain systems. In: Gazzaniga MS, editor. The cognitive neurosciences. Cambridge, MA: MIT