Recognition Memory Correlates of Hippocampal Theta Cells
نویسندگان
چکیده
منابع مشابه
Recognition memory correlates of hippocampal theta cells.
Investigations of hippocampal theta cell activity have typically involved behavioral tasks with modest cognitive demands. Recordings in rats locomoting through space or engaged in simple stimulus discrimination or conditioning have revealed some place specificity and S(+)/S(-) selectivity in addition to the hippocampal EEG theta-related behavioral/motor correlates. However, little data exist re...
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Studies of memory retrieval have identified electroencephalographic (EEG) correlates of a test item's old-new status, reaction time, and memory load. In the current study, we used a multivariate analysis to disentangle the effects of these correlated variables. During retrieval, power of left-parietal theta (4-8 Hz) oscillations increased in proportion to how well a test item was remembered, an...
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Integration of separate memories forms the basis of inferential reasoning--an essential cognitive process that enables complex behavior. Considerable evidence suggests that both hippocampus and medial prefrontal cortex (mPFC) play a crucial role in memory integration. Although previous studies indicate that theta oscillations facilitate memory processes, the electrophysiological mechanisms unde...
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There is now growing evidence that the hippocampus generates theta rhythms that can phase bias fast neural oscillations in the neocortex, allowing coordination of widespread fast oscillatory populations outside limbic areas. A recent magnetoencephalographic study showed that maintenance of configural-relational scene information in a delayed match-to-sample (DMS) task was associated with replay...
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Performance of memory tasks is impaired by lesions to either the medial prefrontal cortex (mPFC) or the hippocampus (HPC); although how these two areas contribute to successful performance is not well understood. mPFC unit activity is temporally affected by hippocampal-theta oscillations, with almost half the mPFC population entrained to theta in behaving animals, pointing to theta interactions...
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ژورنال
عنوان ژورنال: The Journal of Neuroscience
سال: 2001
ISSN: 0270-6474,1529-2401
DOI: 10.1523/jneurosci.21-11-03955.2001