Neural correlates of depth of processing effects on recollection: evidence from brain potentials and positron emission tomography

M. D. Rugg, P. Walla, A. M. Schloerscheidt, P. C. Fletcher, C. D. Frith, R. J. Dolan

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    Abstract

    The probability that words would be recollected during tests of recognition memory was varied by manipulating depth of processing at study. Experiment 1 employed scalp-recorded event-related potentials (ERPs), and identified as a correlate of recollection a late (onset c. 500 ms), strongly left-lateralized positive-going modulation of the ERP waveform. The findings from experiment 2, which employed positron emission tomography (PET), indicated that recollection was associated with activation of the left hippocampal formation together with an extensive region of left temporal and frontal cortex. The findings support current ideas about the role of the hippocampal formation in episodic memory retrieval, and provide complementary information about the time course and localization of the cortical correlates of the recollection of recently experienced words.

    Original languageEnglish
    Pages (from-to)18-23
    Number of pages6
    JournalExperimental Brain Research
    Volume123
    Issue number1-2
    DOIs
    Publication statusPublished - 1998
    Event29th Annual Meeting of the European Brain and Behaviour Society - Tutzing (Bavaria), Germany
    Duration: 15 Sep 199718 Sep 1997

    Keywords

    • event-related potentials
    • hippocampus
    • positron emission tomography
    • recognition memory
    • retrieval

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