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The posterior medial cortex is involved in visual but not in verbal memory encoding processing: an intracerebral recording study
K. Stillová, P. Jurák, J. Chládek, J. Halámek, S. Telecká, I. Rektor,
Language English Country Austria
Document type Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Acoustic Stimulation MeSH
- Adult MeSH
- Electroencephalography methods MeSH
- Epilepsy physiopathology MeSH
- Electrodes, Implanted MeSH
- Humans MeSH
- Brain physiology MeSH
- Memory physiology MeSH
- Signal Processing, Computer-Assisted MeSH
- Evoked Potentials, Auditory physiology MeSH
- Photic Stimulation MeSH
- Evoked Potentials, Visual physiology MeSH
- Check Tag
- Adult MeSH
- Humans MeSH
- Male MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
The objective is to study the involvement of the posterior medial cortex (PMC) in encoding and retrieval by visual and auditory memory processing. Intracerebral recordings were studied in two epilepsy-surgery candidates with depth electrodes implanted in the retrosplenial cingulate, precuneus, cuneus, lingual gyrus and hippocampus. We recorded the event-related potentials (ERP) evoked by visual and auditory memory encoding-retrieval tasks. In the hippocampus, ERP were elicited in the encoding and retrieval phases in the two modalities. In the PMC, ERP were recorded in both the encoding and the retrieval visual tasks; in the auditory modality, they were recorded in the retrieval task, but not in the encoding task. In conclusion, the PMC is modality dependent in memory processing. ERP is elicited by memory retrieval, but it is not elicited by auditory encoding memory processing in the PMC. The PMC appears to be involved not only in higher-order top-down cognitive activities but also in more basic, rather than bottom-up activities.
References provided by Crossref.org
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