Mismatch Between Electrocortical Stimulation and Electrocorticography Frequency Mapping of Language
Background: Electrocortical Stimulation Mapping (ESM) is the gold standard for mapping eloquent cortex in neurosurgery. This technique, however, can cause seizures and requires good patient cooperation. Electrocorticography (ECoG) could replace ESM. Several studies have directly compared ESM and ECo...
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doaj-203dab7834514d58b7c55106d745a2832021-03-18T04:36:27ZengElsevierBrain Stimulation1935-861X2013-07-0164524531Mismatch Between Electrocortical Stimulation and Electrocorticography Frequency Mapping of LanguagePrisca R. Bauer0Mariska J. Vansteensel1Martin G. Bleichner2Dora Hermes3Cyrille H. Ferrier4Erik J. Aarnoutse5Nick F. Ramsey6Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Department of Neurology and Neurosurgery, Section Brainfunction and Plasticity, HP G.03.124, Heidelberglaan 100, 3584 CX Utrecht, The NetherlandsRudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Department of Neurology and Neurosurgery, Section Brainfunction and Plasticity, HP G.03.124, Heidelberglaan 100, 3584 CX Utrecht, The NetherlandsRudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Department of Neurology and Neurosurgery, Section Brainfunction and Plasticity, HP G.03.124, Heidelberglaan 100, 3584 CX Utrecht, The NetherlandsRudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Department of Neurology and Neurosurgery, Section Brainfunction and Plasticity, HP G.03.124, Heidelberglaan 100, 3584 CX Utrecht, The NetherlandsRudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Department of Neurology and Neurosurgery, Section Brainfunction and Plasticity, HP G.03.124, Heidelberglaan 100, 3584 CX Utrecht, The NetherlandsRudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Department of Neurology and Neurosurgery, Section Brainfunction and Plasticity, HP G.03.124, Heidelberglaan 100, 3584 CX Utrecht, The NetherlandsCorresponding author. Tel.: +31 (0)88 755 6863; fax: +31 (0)30 254 2100.; Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Department of Neurology and Neurosurgery, Section Brainfunction and Plasticity, HP G.03.124, Heidelberglaan 100, 3584 CX Utrecht, The NetherlandsBackground: Electrocortical Stimulation Mapping (ESM) is the gold standard for mapping eloquent cortex in neurosurgery. This technique, however, can cause seizures and requires good patient cooperation. Electrocorticography (ECoG) could replace ESM. Several studies have directly compared ESM and ECoG frequency mapping of language cortex, with mixed results. This may be due to ECoG mapping typically being limited to one or a few language tasks, potentially leading to underestimation of language representation. Objective: To evaluate the influence of the language task on the match between ECoG and ESM, we mapped language function based on episodes of spontaneous conversation with ECoG, and compared this with ESM data in eight epilepsy patients. A verb generation and picture naming task were used as reference standard. Methods: From the continuous ECoG and video registrations, periods of conversation were identified, distinguishing three conditions: speaking, listening and rest. A power-frequency analysis was done for each condition and the two language tasks. The match between ESM and ECoG frequency mapping was evaluated on the basis of sensitivity and specificity measures. Results: ECoG activation during spontaneous conversation and language tasks was seen in and around classic language areas. Comparing the electrodes activated in each condition with those indicated as language positive by ESM revealed that there was high specificity but relatively low sensitivity. Conclusion: The relatively poor match between ESM and ECoG mapping is not improved by using spontaneous language.http://www.sciencedirect.com/science/article/pii/S1935861X13000028Electrocortical stimulationESMElectrocorticographyECoGLanguageConversation |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Prisca R. Bauer Mariska J. Vansteensel Martin G. Bleichner Dora Hermes Cyrille H. Ferrier Erik J. Aarnoutse Nick F. Ramsey |
spellingShingle |
Prisca R. Bauer Mariska J. Vansteensel Martin G. Bleichner Dora Hermes Cyrille H. Ferrier Erik J. Aarnoutse Nick F. Ramsey Mismatch Between Electrocortical Stimulation and Electrocorticography Frequency Mapping of Language Brain Stimulation Electrocortical stimulation ESM Electrocorticography ECoG Language Conversation |
author_facet |
Prisca R. Bauer Mariska J. Vansteensel Martin G. Bleichner Dora Hermes Cyrille H. Ferrier Erik J. Aarnoutse Nick F. Ramsey |
author_sort |
Prisca R. Bauer |
title |
Mismatch Between Electrocortical Stimulation and Electrocorticography Frequency Mapping of Language |
title_short |
Mismatch Between Electrocortical Stimulation and Electrocorticography Frequency Mapping of Language |
title_full |
Mismatch Between Electrocortical Stimulation and Electrocorticography Frequency Mapping of Language |
title_fullStr |
Mismatch Between Electrocortical Stimulation and Electrocorticography Frequency Mapping of Language |
title_full_unstemmed |
Mismatch Between Electrocortical Stimulation and Electrocorticography Frequency Mapping of Language |
title_sort |
mismatch between electrocortical stimulation and electrocorticography frequency mapping of language |
publisher |
Elsevier |
series |
Brain Stimulation |
issn |
1935-861X |
publishDate |
2013-07-01 |
description |
Background: Electrocortical Stimulation Mapping (ESM) is the gold standard for mapping eloquent cortex in neurosurgery. This technique, however, can cause seizures and requires good patient cooperation. Electrocorticography (ECoG) could replace ESM. Several studies have directly compared ESM and ECoG frequency mapping of language cortex, with mixed results. This may be due to ECoG mapping typically being limited to one or a few language tasks, potentially leading to underestimation of language representation. Objective: To evaluate the influence of the language task on the match between ECoG and ESM, we mapped language function based on episodes of spontaneous conversation with ECoG, and compared this with ESM data in eight epilepsy patients. A verb generation and picture naming task were used as reference standard. Methods: From the continuous ECoG and video registrations, periods of conversation were identified, distinguishing three conditions: speaking, listening and rest. A power-frequency analysis was done for each condition and the two language tasks. The match between ESM and ECoG frequency mapping was evaluated on the basis of sensitivity and specificity measures. Results: ECoG activation during spontaneous conversation and language tasks was seen in and around classic language areas. Comparing the electrodes activated in each condition with those indicated as language positive by ESM revealed that there was high specificity but relatively low sensitivity. Conclusion: The relatively poor match between ESM and ECoG mapping is not improved by using spontaneous language. |
topic |
Electrocortical stimulation ESM Electrocorticography ECoG Language Conversation |
url |
http://www.sciencedirect.com/science/article/pii/S1935861X13000028 |
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