Rhinal and hippocampal event-related potentials as epileptogenic zone markers in the pre-surgical evaluation of temporal epilepsies: a systematic review
Background Cognitive event-related potentials (ERPs) allow for lateralization of the epileptogenic zone (EZ) to estimate the reserve of memory in the contralateral non-epileptogenic hemisphere, and to investigate the prognosis of temporal lobe seizure control in unilateral temporal lobe epilepsy (TL...
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Academia Brasileira de Neurologia (ABNEURO)
2023-05-01
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| Series: | Arquivos de Neuro-Psiquiatria |
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| Online Access: | http://www.thieme-connect.de/DOI/DOI?10.1055/s-0043-1761493 |
| _version_ | 1797814557000859648 |
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| author | Daniela de Andrade Morange Magali Teresópolis Reis Amaral Martha Silvia Martinez-Silveira Agnès Trébuchon |
| author_facet | Daniela de Andrade Morange Magali Teresópolis Reis Amaral Martha Silvia Martinez-Silveira Agnès Trébuchon |
| author_sort | Daniela de Andrade Morange |
| collection | DOAJ |
| description | Background Cognitive event-related potentials (ERPs) allow for lateralization of the epileptogenic zone (EZ) to estimate the reserve of memory in the contralateral non-epileptogenic hemisphere, and to investigate the prognosis of temporal lobe seizure control in unilateral temporal lobe epilepsy (TLE).
Objective To define the accuracy of cognitive evoked anterior mesial temporal lobe (AMTL-N400) and P600 potentials in detecting the epileptogenic zone in temporal lobe epilepsy (TLE), and second, to evaluate the possibility of using them as markers of cognitive outcome.
Methods The systematic review using Medline/PubMed, Embase, and Lilacs database was conducted in September 2021. Only articles published in English from 1985 to June 2021 were included. We searched for studies with: (1) depth intracranial electroencephalography (iEEG) recordings analysis of rhinal and hippocampal activity (2) correlations between ERP results obtained in the mesial temporal regions (AMTL-N400 and P600) and the epileptogenic zone.
Results Six out of the seven studies included in this review defined the laterality of the epileptogenic zone (EZ) during presurgical investigation using ERPs. One study showed that the contralateral AMTL-N400 predicts seizure control. Another study found correlation between the amplitudes of the right AMTL-N400 and postoperative memory performance.
Conclusions There is evidence that the reduced amplitude of the AMTL-N400 has high accuracy in identifying the epileptogenic zone, as it does in estimating the extent of seizure control and memory impairment in postoperative patients. |
| first_indexed | 2024-03-13T08:09:24Z |
| format | Article |
| id | doaj.art-71b765b767c849729fc38483e62a0e39 |
| institution | Directory Open Access Journal |
| issn | 0004-282X 1678-4227 |
| language | English |
| last_indexed | 2024-03-13T08:09:24Z |
| publishDate | 2023-05-01 |
| publisher | Academia Brasileira de Neurologia (ABNEURO) |
| record_format | Article |
| series | Arquivos de Neuro-Psiquiatria |
| spelling | doaj.art-71b765b767c849729fc38483e62a0e392023-05-31T22:50:56ZengAcademia Brasileira de Neurologia (ABNEURO)Arquivos de Neuro-Psiquiatria0004-282X1678-42272023-05-01810549250110.1055/s-0043-1761493Rhinal and hippocampal event-related potentials as epileptogenic zone markers in the pre-surgical evaluation of temporal epilepsies: a systematic reviewDaniela de Andrade Morange0Magali Teresópolis Reis Amaral1Martha Silvia Martinez-Silveira2Agnès Trébuchon3Institut de Neurosciences des Systèmes, Université d'Aix-Marseille, Marseille, France.Universidade Estadual de Feira de Santana, Departamento de Ciências Exatas, Salvador BA, Brazil.Fundação Oswaldo Cruz, Instituto Gonçalo Muniz, Salvador BA, Brazil.Institut de Neurosciences des Systèmes, Université d'Aix-Marseille, Marseille, France.Background Cognitive event-related potentials (ERPs) allow for lateralization of the epileptogenic zone (EZ) to estimate the reserve of memory in the contralateral non-epileptogenic hemisphere, and to investigate the prognosis of temporal lobe seizure control in unilateral temporal lobe epilepsy (TLE). Objective To define the accuracy of cognitive evoked anterior mesial temporal lobe (AMTL-N400) and P600 potentials in detecting the epileptogenic zone in temporal lobe epilepsy (TLE), and second, to evaluate the possibility of using them as markers of cognitive outcome. Methods The systematic review using Medline/PubMed, Embase, and Lilacs database was conducted in September 2021. Only articles published in English from 1985 to June 2021 were included. We searched for studies with: (1) depth intracranial electroencephalography (iEEG) recordings analysis of rhinal and hippocampal activity (2) correlations between ERP results obtained in the mesial temporal regions (AMTL-N400 and P600) and the epileptogenic zone. Results Six out of the seven studies included in this review defined the laterality of the epileptogenic zone (EZ) during presurgical investigation using ERPs. One study showed that the contralateral AMTL-N400 predicts seizure control. Another study found correlation between the amplitudes of the right AMTL-N400 and postoperative memory performance. Conclusions There is evidence that the reduced amplitude of the AMTL-N400 has high accuracy in identifying the epileptogenic zone, as it does in estimating the extent of seizure control and memory impairment in postoperative patients.http://www.thieme-connect.de/DOI/DOI?10.1055/s-0043-1761493evoked potentialsepilepsytemporal lobememoryperirhinal cortexhippocampus |
| spellingShingle | Daniela de Andrade Morange Magali Teresópolis Reis Amaral Martha Silvia Martinez-Silveira Agnès Trébuchon Rhinal and hippocampal event-related potentials as epileptogenic zone markers in the pre-surgical evaluation of temporal epilepsies: a systematic review Arquivos de Neuro-Psiquiatria evoked potentials epilepsy temporal lobe memory perirhinal cortex hippocampus |
| title | Rhinal and hippocampal event-related potentials as epileptogenic zone markers in the pre-surgical evaluation of temporal epilepsies: a systematic review |
| title_full | Rhinal and hippocampal event-related potentials as epileptogenic zone markers in the pre-surgical evaluation of temporal epilepsies: a systematic review |
| title_fullStr | Rhinal and hippocampal event-related potentials as epileptogenic zone markers in the pre-surgical evaluation of temporal epilepsies: a systematic review |
| title_full_unstemmed | Rhinal and hippocampal event-related potentials as epileptogenic zone markers in the pre-surgical evaluation of temporal epilepsies: a systematic review |
| title_short | Rhinal and hippocampal event-related potentials as epileptogenic zone markers in the pre-surgical evaluation of temporal epilepsies: a systematic review |
| title_sort | rhinal and hippocampal event related potentials as epileptogenic zone markers in the pre surgical evaluation of temporal epilepsies a systematic review |
| topic | evoked potentials epilepsy temporal lobe memory perirhinal cortex hippocampus |
| url | http://www.thieme-connect.de/DOI/DOI?10.1055/s-0043-1761493 |
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