The posterior medial cortex is involved in visual but not in verbal memory encoding processing: an intracerebral recording study
Jazyk angličtina Země Rakousko Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
- MeSH
- akustická stimulace MeSH
- dospělí MeSH
- elektroencefalografie metody MeSH
- epilepsie patofyziologie MeSH
- implantované elektrody MeSH
- lidé MeSH
- mozek fyziologie MeSH
- paměť fyziologie MeSH
- počítačové zpracování signálu MeSH
- sluchové evokované potenciály fyziologie MeSH
- světelná stimulace MeSH
- zrakové evokované potenciály fyziologie MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem 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.
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