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- W2045687018 abstract "While previous functional neuroimaging studies have shown that semantic and episodic memory tasks activate different cortical regions, they never compared regional cerebral blood flow (rCBF) patterns associated with semantic and episodic memory within the same experimental design. In this study, we used H2 15O PET to study subjects in the course of semantic and episodic memory tasks. rCBF was measured in 9 normal volunteers during a resting baseline condition and two cognitive tasks. In the semantic categorisation task subjects heard a list of concrete words and had to respond to words belonging to the “animals” or “food” category. In the episodic recognition task subjects heard a list of concrete words, half “old”, i.e. belonging to the list of the semantic categorisation task, and half “new”, i.e. presented for the first time. Subjects had to respond to the “old” words. Both tasks were compared to a resting condition. Statistical analysis was performed with Statistical Parametric Mapping (SPM). Compared to the resting condition, the semantic tasks, activated the superior temporal gyri bilaterally, the left frontal cortex, and right premotor cortex. The episodic tasks activated the left superior temporal gyrus, the frontal cortex bilaterally, and the right inferior parietal cortex. Compared to the episodic memory tasks, the semantic memory tasks activated the superior temporal/insular cortex bilaterally and the right premotor cortex. Compared to the semantic memory tasks, the episodic memory tasks activated the right frontal cortex. These results suggest that cortical networks implicated in semantic and episodic memory show both common and unique regions, with the right prefrontal cortex being the neural correlate specific of episodic remembering." @default.
- W2045687018 created "2016-06-24" @default.
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- W2045687018 date "1998-01-01" @default.
- W2045687018 modified "2023-10-13" @default.
- W2045687018 title "Cortical Networks Implicated in Semantic and Episodic Memory: Common or Unique?" @default.
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- W2045687018 doi "https://doi.org/10.1016/s0010-9452(08)70513-6" @default.
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