Time-dependent contribution of the hippocampal complex when remembering the past: A PET study

Takashi Tsukiura, Toshikatu Fujii, Jiro Okuda, Hiroya Ohtake, Ryuta Kawashima, Masatoshi Itoh, Hiroshi Fukuda, Atsushi Yamadori

研究成果: ジャーナルへの寄稿学術論文査読

35 被引用数 (Scopus)

抄録

Previous studies of brain-damaged patients and functional neuro-imaging have consistently shown the importance of the hippocampal complex, i.e. the hippocampus and parahippocampal gyrus, in episodic memory retrieval. We wished to determine whether patterns of brain activation during memory retrieval as measured by PET are same or different when the oldness of a to-be-retrieved episode is manipulated. Using cue words, subjects remembered related episodes from three periods of their life, childhood, adolescence and recent period. The results showed an increase of parahippocampal activities during recall of episodes from childhood and recent period, but not from adolescence. These data suggest a possibility of time-dependent hippocampal contribution in episodic recall, which cannot be understood in simple terms of recent vs remote memory dichotomy.

本文言語英語
ページ(範囲)2319-2323
ページ数5
ジャーナルNeuroReport
13
17
DOI
出版ステータス出版済み - 2002 12月 3

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