Associative Information Processing in Parahippocampal Place Area (PPA): An fMRI Study
The function of the parahippocampal place area (PPA) is a matter of debate. We investigated this issue in fMRI experiment by 36 normal subjects using two types of tasks: figure and text. Furthermore, the figure tasks contain two kinds of contextual associations: one is among items; the other is among items and their locations which refers to the spatial contextual associations. In contrast, the text tasks contain only item contextual associations - they do not have any spatial information. The results showed that the right PPA located at anterior lingual gyrus and left anterior parahippocampal gyrus nearby amygdala were significantly activated during both figure and text tasks, which indicate that the PPA is more involved in associative information processing.
KeywordsSource Memory fMRI Experiment Parahippocampal Cortex Associative Information Contextual Association
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